/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_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:11:01,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:11:01,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:11:01,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:11:01,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:11:01,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:11:01,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:11:01,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:11:01,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:11:01,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:11:01,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:11:01,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:11:01,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:11:01,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:11:01,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:11:01,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:11:01,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:11:01,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:11:01,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:11:01,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:11:01,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:11:01,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:11:01,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:11:01,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:11:01,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:11:01,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:11:01,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:11:01,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:11:01,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:11:01,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:11:01,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:11:01,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:11:01,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:11:01,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:11:01,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:11:01,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:11:01,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:11:01,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:11:01,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:11:01,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:11:01,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:11:01,983 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 15:11:02,020 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:11:02,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:11:02,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:11:02,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:11:02,023 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:11:02,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:11:02,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:11:02,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:11:02,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:11:02,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:11:02,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:11:02,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:11:02,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:11:02,026 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:11:02,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:11:02,026 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:11:02,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:11:02,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:11:02,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:11:02,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:11:02,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:11:02,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:11:02,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:11:02,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:11:02,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:11:02,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:11:02,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:11:02,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:11:02,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:11:02,030 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 15:11:02,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:11:02,334 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:11:02,338 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:11:02,340 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:11:02,340 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:11:02,341 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-13 15:11:02,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77b157f85/099337c59e1842dabd5446dc3705ed23/FLAGa8fd61839 [2020-10-13 15:11:03,104 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:11:03,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-13 15:11:03,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77b157f85/099337c59e1842dabd5446dc3705ed23/FLAGa8fd61839 [2020-10-13 15:11:03,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77b157f85/099337c59e1842dabd5446dc3705ed23 [2020-10-13 15:11:03,270 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:11:03,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:11:03,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:11:03,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:11:03,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:11:03,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:11:03" (1/1) ... [2020-10-13 15:11:03,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f72d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:03, skipping insertion in model container [2020-10-13 15:11:03,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:11:03" (1/1) ... [2020-10-13 15:11:03,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:11:03,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:11:04,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:11:04,126 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:11:04,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:11:04,393 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:11:04,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:04 WrapperNode [2020-10-13 15:11:04,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:11:04,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:11:04,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:11:04,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:11:04,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:04" (1/1) ... [2020-10-13 15:11:04,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:04" (1/1) ... [2020-10-13 15:11:04,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:04" (1/1) ... [2020-10-13 15:11:04,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:04" (1/1) ... [2020-10-13 15:11:04,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:04" (1/1) ... [2020-10-13 15:11:04,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:04" (1/1) ... [2020-10-13 15:11:04,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:04" (1/1) ... [2020-10-13 15:11:04,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:11:04,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:11:04,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:11:04,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:11:04,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:04" (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 15:11:04,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:11:04,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:11:04,707 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 15:11:04,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:11:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:11:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:11:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 15:11:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 15:11:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 15:11:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 15:11:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 15:11:04,709 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 15:11:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 15:11:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 15:11:04,710 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 15:11:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 15:11:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 15:11:04,711 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 15:11:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 15:11:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:11:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:11:04,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:11:07,144 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:11:07,144 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 15:11:07,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:11:07 BoogieIcfgContainer [2020-10-13 15:11:07,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:11:07,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:11:07,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:11:07,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:11:07,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:11:03" (1/3) ... [2020-10-13 15:11:07,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a512866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:11:07, skipping insertion in model container [2020-10-13 15:11:07,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:11:04" (2/3) ... [2020-10-13 15:11:07,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a512866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:11:07, skipping insertion in model container [2020-10-13 15:11:07,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:11:07" (3/3) ... [2020-10-13 15:11:07,163 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-13 15:11:07,174 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:11:07,187 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:11:07,202 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:11:07,230 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:11:07,230 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:11:07,230 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:11:07,230 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:11:07,230 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:11:07,231 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:11:07,231 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:11:07,231 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:11:07,265 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2020-10-13 15:11:07,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-13 15:11:07,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:11:07,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:11:07,296 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:11:07,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:11:07,303 INFO L82 PathProgramCache]: Analyzing trace with hash 558716282, now seen corresponding path program 1 times [2020-10-13 15:11:07,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:11:07,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102833867] [2020-10-13 15:11:07,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:11:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:08,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:09,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:09,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:10,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:10,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:11,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:13,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:13,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-13 15:11:13,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 15:11:13,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-13 15:11:13,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:11:13,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 15:11:13,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 15:11:13,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 15:11:14,188 WARN L193 SmtUtils]: Spent 799.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:11:14,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:11:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:14,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:14,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:14,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:11:14,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:11:14,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 15:11:14,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:11:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:11:14,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:11:14,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:14,351 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 15:11:14,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102833867] [2020-10-13 15:11:14,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:11:14,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 15:11:14,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363263139] [2020-10-13 15:11:14,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:11:14,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:11:14,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:11:14,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:11:14,380 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 8 states. [2020-10-13 15:11:15,258 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 392 [2020-10-13 15:11:22,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:11:22,411 INFO L93 Difference]: Finished difference Result 3005 states and 5196 transitions. [2020-10-13 15:11:22,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:11:22,413 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 217 [2020-10-13 15:11:22,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:11:22,451 INFO L225 Difference]: With dead ends: 3005 [2020-10-13 15:11:22,452 INFO L226 Difference]: Without dead ends: 2742 [2020-10-13 15:11:22,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-13 15:11:22,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2020-10-13 15:11:22,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 988. [2020-10-13 15:11:22,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-10-13 15:11:22,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1715 transitions. [2020-10-13 15:11:22,609 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1715 transitions. Word has length 217 [2020-10-13 15:11:22,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:11:22,614 INFO L479 AbstractCegarLoop]: Abstraction has 988 states and 1715 transitions. [2020-10-13 15:11:22,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:11:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1715 transitions. [2020-10-13 15:11:22,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-13 15:11:22,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:11:22,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:11:22,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:11:22,633 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:11:22,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:11:22,634 INFO L82 PathProgramCache]: Analyzing trace with hash 69609569, now seen corresponding path program 1 times [2020-10-13 15:11:22,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:11:22,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399701689] [2020-10-13 15:11:22,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:11:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:22,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:23,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:23,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:24,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:24,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:25,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:26,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:27,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:27,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-13 15:11:27,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:11:27,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-13 15:11:27,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 15:11:27,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 15:11:27,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 15:11:27,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:11:29,012 WARN L193 SmtUtils]: Spent 880.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:11:29,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:11:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:29,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:29,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:29,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:11:29,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:11:29,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 15:11:29,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:11:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:11:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:11:29,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:29,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:11:29,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399701689] [2020-10-13 15:11:29,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:11:29,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 15:11:29,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400027102] [2020-10-13 15:11:29,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 15:11:29,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:11:29,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 15:11:29,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 15:11:29,167 INFO L87 Difference]: Start difference. First operand 988 states and 1715 transitions. Second operand 9 states. [2020-10-13 15:11:30,185 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-10-13 15:11:38,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:11:38,910 INFO L93 Difference]: Finished difference Result 7150 states and 12173 transitions. [2020-10-13 15:11:38,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 15:11:38,911 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 218 [2020-10-13 15:11:38,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:11:38,953 INFO L225 Difference]: With dead ends: 7150 [2020-10-13 15:11:38,954 INFO L226 Difference]: Without dead ends: 6714 [2020-10-13 15:11:38,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2020-10-13 15:11:38,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6714 states. [2020-10-13 15:11:39,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6714 to 2205. [2020-10-13 15:11:39,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2205 states. [2020-10-13 15:11:39,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 3782 transitions. [2020-10-13 15:11:39,168 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 3782 transitions. Word has length 218 [2020-10-13 15:11:39,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:11:39,170 INFO L479 AbstractCegarLoop]: Abstraction has 2205 states and 3782 transitions. [2020-10-13 15:11:39,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 15:11:39,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 3782 transitions. [2020-10-13 15:11:39,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-13 15:11:39,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:11:39,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:11:39,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:11:39,177 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:11:39,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:11:39,177 INFO L82 PathProgramCache]: Analyzing trace with hash 2091728673, now seen corresponding path program 1 times [2020-10-13 15:11:39,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:11:39,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335114546] [2020-10-13 15:11:39,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:11:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:39,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:39,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:40,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:40,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:40,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:40,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:42,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:44,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:44,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-13 15:11:44,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:11:44,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 15:11:44,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:44,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:11:44,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-13 15:11:44,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 15:11:44,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:45,266 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:11:45,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:11:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:45,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:45,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:45,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:11:45,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:11:45,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 15:11:45,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:45,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:11:45,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:11:45,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:11:45,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:45,379 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 15:11:45,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335114546] [2020-10-13 15:11:45,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:11:45,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:11:45,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760863453] [2020-10-13 15:11:45,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:11:45,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:11:45,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:11:45,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:11:45,384 INFO L87 Difference]: Start difference. First operand 2205 states and 3782 transitions. Second operand 5 states. [2020-10-13 15:11:46,115 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-13 15:11:51,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:11:51,117 INFO L93 Difference]: Finished difference Result 6742 states and 11491 transitions. [2020-10-13 15:11:51,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:11:51,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-10-13 15:11:51,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:11:51,147 INFO L225 Difference]: With dead ends: 6742 [2020-10-13 15:11:51,147 INFO L226 Difference]: Without dead ends: 5261 [2020-10-13 15:11:51,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:11:51,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2020-10-13 15:11:51,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 3771. [2020-10-13 15:11:51,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3771 states. [2020-10-13 15:11:51,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 6440 transitions. [2020-10-13 15:11:51,429 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 6440 transitions. Word has length 219 [2020-10-13 15:11:51,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:11:51,430 INFO L479 AbstractCegarLoop]: Abstraction has 3771 states and 6440 transitions. [2020-10-13 15:11:51,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:11:51,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 6440 transitions. [2020-10-13 15:11:51,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-13 15:11:51,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:11:51,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:11:51,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:11:51,437 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:11:51,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:11:51,441 INFO L82 PathProgramCache]: Analyzing trace with hash 357469480, now seen corresponding path program 1 times [2020-10-13 15:11:51,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:11:51,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064404915] [2020-10-13 15:11:51,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:11:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:51,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:52,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:52,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:52,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:52,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:53,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:53,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:56,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:56,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-13 15:11:56,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:11:56,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-13 15:11:56,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:56,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:11:56,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 179 [2020-10-13 15:11:56,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 15:11:56,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:57,392 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:11:57,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:11:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:57,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:57,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:57,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:11:57,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:11:57,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 15:11:57,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:57,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:11:57,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:11:57,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:11:57,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:57,520 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 15:11:57,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064404915] [2020-10-13 15:11:57,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:11:57,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:11:57,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609561102] [2020-10-13 15:11:57,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:11:57,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:11:57,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:11:57,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:11:57,523 INFO L87 Difference]: Start difference. First operand 3771 states and 6440 transitions. Second operand 5 states. [2020-10-13 15:11:58,228 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-13 15:12:03,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:12:03,213 INFO L93 Difference]: Finished difference Result 12738 states and 21665 transitions. [2020-10-13 15:12:03,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:12:03,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-13 15:12:03,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:12:03,259 INFO L225 Difference]: With dead ends: 12738 [2020-10-13 15:12:03,259 INFO L226 Difference]: Without dead ends: 9785 [2020-10-13 15:12:03,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:12:03,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9785 states. [2020-10-13 15:12:03,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9785 to 6816. [2020-10-13 15:12:03,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6816 states. [2020-10-13 15:12:03,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6816 states to 6816 states and 11602 transitions. [2020-10-13 15:12:03,772 INFO L78 Accepts]: Start accepts. Automaton has 6816 states and 11602 transitions. Word has length 220 [2020-10-13 15:12:03,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:12:03,773 INFO L479 AbstractCegarLoop]: Abstraction has 6816 states and 11602 transitions. [2020-10-13 15:12:03,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:12:03,774 INFO L276 IsEmpty]: Start isEmpty. Operand 6816 states and 11602 transitions. [2020-10-13 15:12:03,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-13 15:12:03,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:12:03,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:12:03,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:12:03,781 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:12:03,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:12:03,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1860399928, now seen corresponding path program 1 times [2020-10-13 15:12:03,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:12:03,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984320229] [2020-10-13 15:12:03,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:12:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:03,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:04,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:04,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:05,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:05,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:05,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:05,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:08,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:08,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-13 15:12:08,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:12:08,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 15:12:08,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:12:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-13 15:12:08,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 15:12:08,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:09,580 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:12:09,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:12:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:09,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:09,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:09,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:12:09,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:12:09,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:12:09,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:12:09,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:12:09,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:12:09,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:09,661 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 15:12:09,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984320229] [2020-10-13 15:12:09,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:12:09,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:12:09,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449699983] [2020-10-13 15:12:09,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:12:09,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:12:09,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:12:09,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:12:09,664 INFO L87 Difference]: Start difference. First operand 6816 states and 11602 transitions. Second operand 5 states. [2020-10-13 15:12:10,382 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-13 15:12:15,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:12:15,642 INFO L93 Difference]: Finished difference Result 24542 states and 41669 transitions. [2020-10-13 15:12:15,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:12:15,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 221 [2020-10-13 15:12:15,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:12:15,691 INFO L225 Difference]: With dead ends: 24542 [2020-10-13 15:12:15,691 INFO L226 Difference]: Without dead ends: 18652 [2020-10-13 15:12:15,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:12:15,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18652 states. [2020-10-13 15:12:16,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18652 to 12732. [2020-10-13 15:12:16,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12732 states. [2020-10-13 15:12:16,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12732 states to 12732 states and 21618 transitions. [2020-10-13 15:12:16,586 INFO L78 Accepts]: Start accepts. Automaton has 12732 states and 21618 transitions. Word has length 221 [2020-10-13 15:12:16,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:12:16,586 INFO L479 AbstractCegarLoop]: Abstraction has 12732 states and 21618 transitions. [2020-10-13 15:12:16,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:12:16,587 INFO L276 IsEmpty]: Start isEmpty. Operand 12732 states and 21618 transitions. [2020-10-13 15:12:16,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-13 15:12:16,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:12:16,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:12:16,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:12:16,594 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:12:16,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:12:16,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1890316817, now seen corresponding path program 1 times [2020-10-13 15:12:16,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:12:16,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114332788] [2020-10-13 15:12:16,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:12:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:16,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:16,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:17,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:17,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:17,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:17,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:21,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:21,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-13 15:12:21,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:12:21,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:12:21,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:12:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-13 15:12:21,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 15:12:21,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:22,395 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:12:22,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:12:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:22,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:22,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:22,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:12:22,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:12:22,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 15:12:22,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:22,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:12:22,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:12:22,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:12:22,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:22,565 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 15:12:22,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114332788] [2020-10-13 15:12:22,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:12:22,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:12:22,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946157910] [2020-10-13 15:12:22,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:12:22,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:12:22,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:12:22,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:12:22,567 INFO L87 Difference]: Start difference. First operand 12732 states and 21618 transitions. Second operand 5 states. [2020-10-13 15:12:23,265 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-13 15:12:29,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:12:29,295 INFO L93 Difference]: Finished difference Result 47982 states and 81333 transitions. [2020-10-13 15:12:29,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:12:29,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-13 15:12:29,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:12:29,372 INFO L225 Difference]: With dead ends: 47982 [2020-10-13 15:12:29,372 INFO L226 Difference]: Without dead ends: 36232 [2020-10-13 15:12:29,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 15:12:29,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36232 states. [2020-10-13 15:12:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36232 to 24424. [2020-10-13 15:12:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24424 states. [2020-10-13 15:12:31,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24424 states to 24424 states and 41378 transitions. [2020-10-13 15:12:31,785 INFO L78 Accepts]: Start accepts. Automaton has 24424 states and 41378 transitions. Word has length 222 [2020-10-13 15:12:31,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:12:31,786 INFO L479 AbstractCegarLoop]: Abstraction has 24424 states and 41378 transitions. [2020-10-13 15:12:31,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:12:31,786 INFO L276 IsEmpty]: Start isEmpty. Operand 24424 states and 41378 transitions. [2020-10-13 15:12:31,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 15:12:31,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:12:31,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:12:31,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:12:31,792 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:12:31,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:12:31,793 INFO L82 PathProgramCache]: Analyzing trace with hash -906669944, now seen corresponding path program 1 times [2020-10-13 15:12:31,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:12:31,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990229989] [2020-10-13 15:12:31,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:12:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:31,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:32,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:32,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:32,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:33,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:33,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:34,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:36,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:36,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 15:12:36,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:12:36,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 15:12:36,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:12:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-13 15:12:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:12:36,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:37,621 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:12:37,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:12:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:37,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:37,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:37,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:12:37,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:12:37,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 15:12:37,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:37,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:12:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:12:37,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:12:37,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:37,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:12:37,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990229989] [2020-10-13 15:12:37,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:12:37,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:12:37,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758392307] [2020-10-13 15:12:37,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:12:37,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:12:37,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:12:37,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:12:37,694 INFO L87 Difference]: Start difference. First operand 24424 states and 41378 transitions. Second operand 4 states. [2020-10-13 15:12:38,404 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-13 15:12:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:12:46,293 INFO L93 Difference]: Finished difference Result 67491 states and 114199 transitions. [2020-10-13 15:12:46,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:12:46,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 223 [2020-10-13 15:12:46,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:12:46,386 INFO L225 Difference]: With dead ends: 67491 [2020-10-13 15:12:46,386 INFO L226 Difference]: Without dead ends: 43647 [2020-10-13 15:12:46,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:12:46,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43647 states. [2020-10-13 15:12:48,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43647 to 43645. [2020-10-13 15:12:48,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43645 states. [2020-10-13 15:12:48,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43645 states to 43645 states and 73725 transitions. [2020-10-13 15:12:48,729 INFO L78 Accepts]: Start accepts. Automaton has 43645 states and 73725 transitions. Word has length 223 [2020-10-13 15:12:48,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:12:48,729 INFO L479 AbstractCegarLoop]: Abstraction has 43645 states and 73725 transitions. [2020-10-13 15:12:48,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:12:48,729 INFO L276 IsEmpty]: Start isEmpty. Operand 43645 states and 73725 transitions. [2020-10-13 15:12:48,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 15:12:48,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:12:48,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:12:48,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:12:48,733 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:12:48,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:12:48,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1568447499, now seen corresponding path program 1 times [2020-10-13 15:12:48,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:12:48,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399811842] [2020-10-13 15:12:48,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:12:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:48,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:49,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:50,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:51,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:51,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:51,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:51,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:52,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:52,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:52,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:53,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:53,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:53,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 15:12:53,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:12:53,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 15:12:53,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:53,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:12:53,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-13 15:12:53,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 15:12:53,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:54,579 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:12:54,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:12:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:54,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:54,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:54,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:12:54,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:12:54,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 15:12:54,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:54,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:12:54,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:12:54,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:12:54,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:54,697 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 15:12:54,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399811842] [2020-10-13 15:12:54,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:12:54,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:12:54,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376399619] [2020-10-13 15:12:54,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:12:54,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:12:54,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:12:54,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:12:54,701 INFO L87 Difference]: Start difference. First operand 43645 states and 73725 transitions. Second operand 4 states. [2020-10-13 15:12:55,406 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-13 15:13:04,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:13:04,512 INFO L93 Difference]: Finished difference Result 120727 states and 203689 transitions. [2020-10-13 15:13:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:13:04,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 223 [2020-10-13 15:13:04,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:13:04,634 INFO L225 Difference]: With dead ends: 120727 [2020-10-13 15:13:04,635 INFO L226 Difference]: Without dead ends: 77759 [2020-10-13 15:13:04,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:13:04,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77759 states. [2020-10-13 15:13:08,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77759 to 77757. [2020-10-13 15:13:08,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77757 states. [2020-10-13 15:13:08,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77757 states to 77757 states and 130915 transitions. [2020-10-13 15:13:08,953 INFO L78 Accepts]: Start accepts. Automaton has 77757 states and 130915 transitions. Word has length 223 [2020-10-13 15:13:08,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:13:08,953 INFO L479 AbstractCegarLoop]: Abstraction has 77757 states and 130915 transitions. [2020-10-13 15:13:08,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:13:08,953 INFO L276 IsEmpty]: Start isEmpty. Operand 77757 states and 130915 transitions. [2020-10-13 15:13:08,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 15:13:08,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:13:08,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:13:08,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:13:08,956 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:13:08,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:13:08,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1316707105, now seen corresponding path program 1 times [2020-10-13 15:13:08,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:13:08,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213765136] [2020-10-13 15:13:08,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:13:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:09,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:09,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:09,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:09,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:09,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:10,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:10,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:11,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:12,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:12,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:14,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:14,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 15:13:14,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:13:14,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 15:13:14,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:14,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:13:14,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-13 15:13:14,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:13:14,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:15,110 WARN L193 SmtUtils]: Spent 954.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:13:15,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:13:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:15,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:15,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:15,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:13:15,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:13:15,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:13:15,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:15,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:13:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:13:15,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:13:15,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:15,186 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 15:13:15,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213765136] [2020-10-13 15:13:15,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:13:15,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:13:15,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292249133] [2020-10-13 15:13:15,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:13:15,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:13:15,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:13:15,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:13:15,188 INFO L87 Difference]: Start difference. First operand 77757 states and 130915 transitions. Second operand 4 states. [2020-10-13 15:13:15,900 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-13 15:13:29,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:13:29,268 INFO L93 Difference]: Finished difference Result 214849 states and 361253 transitions. [2020-10-13 15:13:29,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:13:29,268 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 223 [2020-10-13 15:13:29,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:13:29,475 INFO L225 Difference]: With dead ends: 214849 [2020-10-13 15:13:29,475 INFO L226 Difference]: Without dead ends: 137859 [2020-10-13 15:13:29,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:13:29,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137859 states. [2020-10-13 15:13:39,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137859 to 137793. [2020-10-13 15:13:39,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137793 states. [2020-10-13 15:13:39,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137793 states to 137793 states and 231113 transitions. [2020-10-13 15:13:39,507 INFO L78 Accepts]: Start accepts. Automaton has 137793 states and 231113 transitions. Word has length 223 [2020-10-13 15:13:39,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:13:39,507 INFO L479 AbstractCegarLoop]: Abstraction has 137793 states and 231113 transitions. [2020-10-13 15:13:39,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:13:39,507 INFO L276 IsEmpty]: Start isEmpty. Operand 137793 states and 231113 transitions. [2020-10-13 15:13:39,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 15:13:39,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:13:39,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:13:39,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:13:39,511 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:13:39,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:13:39,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1047992245, now seen corresponding path program 1 times [2020-10-13 15:13:39,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:13:39,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939300071] [2020-10-13 15:13:39,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:13:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:39,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:39,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:40,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:40,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:40,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:40,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:41,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:43,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:44,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:44,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:44,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:44,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:44,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 15:13:44,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:13:44,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-13 15:13:44,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:44,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:13:44,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-13 15:13:44,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 15:13:44,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:45,446 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:13:45,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:13:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:13:45,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:13:45,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:13:45,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:13:45,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:13:45,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 15:13:45,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:13:45,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:13:45,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:13:45,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:13:45,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:13:45,521 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 15:13:45,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939300071] [2020-10-13 15:13:45,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:13:45,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:13:45,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780851183] [2020-10-13 15:13:45,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:13:45,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:13:45,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:13:45,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:13:45,523 INFO L87 Difference]: Start difference. First operand 137793 states and 231113 transitions. Second operand 4 states. [2020-10-13 15:13:46,268 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2020-10-13 15:14:05,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:14:05,054 INFO L93 Difference]: Finished difference Result 378373 states and 633547 transitions. [2020-10-13 15:14:05,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:14:05,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 223 [2020-10-13 15:14:05,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:14:05,450 INFO L225 Difference]: With dead ends: 378373 [2020-10-13 15:14:05,450 INFO L226 Difference]: Without dead ends: 241261 [2020-10-13 15:14:05,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:14:05,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241261 states. [2020-10-13 15:14:22,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241261 to 241171. [2020-10-13 15:14:22,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241171 states. [2020-10-13 15:14:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241171 states to 241171 states and 402578 transitions. [2020-10-13 15:14:23,271 INFO L78 Accepts]: Start accepts. Automaton has 241171 states and 402578 transitions. Word has length 223 [2020-10-13 15:14:23,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:14:23,272 INFO L479 AbstractCegarLoop]: Abstraction has 241171 states and 402578 transitions. [2020-10-13 15:14:23,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:14:23,272 INFO L276 IsEmpty]: Start isEmpty. Operand 241171 states and 402578 transitions. [2020-10-13 15:14:23,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-13 15:14:23,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:14:23,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:14:23,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:14:23,275 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:14:23,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:14:23,275 INFO L82 PathProgramCache]: Analyzing trace with hash -849752545, now seen corresponding path program 1 times [2020-10-13 15:14:23,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:14:23,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330366605] [2020-10-13 15:14:23,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:14:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:14:23,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:23,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:23,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:23,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:24,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:28,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:14:28,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-13 15:14:28,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:14:28,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5232 [2020-10-13 15:14:28,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:14:28,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:14:28,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 188 [2020-10-13 15:14:28,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 15:14:28,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:14:29,287 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-13 15:14:29,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:14:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:14:29,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:14:29,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:14:29,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:14:29,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:14:29,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:14:29,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:14:29,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:14:29,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:14:29,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:14:29,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:14:29,350 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 15:14:29,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330366605] [2020-10-13 15:14:29,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:14:29,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:14:29,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671515230] [2020-10-13 15:14:29,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:14:29,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:14:29,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:14:29,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:14:29,352 INFO L87 Difference]: Start difference. First operand 241171 states and 402578 transitions. Second operand 4 states. [2020-10-13 15:14:30,087 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 386