/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 04:13:13,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 04:13:13,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 04:13:13,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 04:13:13,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 04:13:13,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 04:13:13,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 04:13:13,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 04:13:13,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 04:13:13,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 04:13:13,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 04:13:13,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 04:13:13,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 04:13:13,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 04:13:13,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 04:13:13,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 04:13:13,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 04:13:13,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 04:13:13,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 04:13:13,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 04:13:13,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 04:13:13,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 04:13:13,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 04:13:13,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 04:13:13,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 04:13:13,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 04:13:13,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 04:13:13,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 04:13:13,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 04:13:13,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 04:13:13,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 04:13:13,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 04:13:13,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 04:13:13,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 04:13:13,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 04:13:13,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 04:13:13,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 04:13:13,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 04:13:13,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 04:13:13,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 04:13:13,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 04:13:13,902 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 04:13:13,950 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 04:13:13,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 04:13:13,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 04:13:13,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 04:13:13,957 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 04:13:13,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 04:13:13,957 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 04:13:13,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 04:13:13,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 04:13:13,958 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 04:13:13,958 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 04:13:13,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 04:13:13,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 04:13:13,958 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 04:13:13,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 04:13:13,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 04:13:13,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 04:13:13,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 04:13:13,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 04:13:13,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 04:13:13,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 04:13:13,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:13:13,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 04:13:13,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 04:13:13,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 04:13:13,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 04:13:13,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 04:13:13,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 04:13:13,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 04:13:13,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 04:13:14,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 04:13:14,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 04:13:14,310 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 04:13:14,311 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 04:13:14,312 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 04:13:14,313 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 04:13:14,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb0365d76/6c2e021c9f4345f3a3892634629c5ec7/FLAG768bc273f [2020-10-15 04:13:15,015 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 04:13:15,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 04:13:15,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb0365d76/6c2e021c9f4345f3a3892634629c5ec7/FLAG768bc273f [2020-10-15 04:13:15,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb0365d76/6c2e021c9f4345f3a3892634629c5ec7 [2020-10-15 04:13:15,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 04:13:15,270 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 04:13:15,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 04:13:15,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 04:13:15,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 04:13:15,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:13:15" (1/1) ... [2020-10-15 04:13:15,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b3ca2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:15, skipping insertion in model container [2020-10-15 04:13:15,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 04:13:15" (1/1) ... [2020-10-15 04:13:15,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 04:13:15,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 04:13:15,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:13:16,033 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 04:13:16,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 04:13:16,511 INFO L208 MainTranslator]: Completed translation [2020-10-15 04:13:16,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:16 WrapperNode [2020-10-15 04:13:16,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 04:13:16,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 04:13:16,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 04:13:16,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 04:13:16,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:16" (1/1) ... [2020-10-15 04:13:16,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:16" (1/1) ... [2020-10-15 04:13:16,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:16" (1/1) ... [2020-10-15 04:13:16,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:16" (1/1) ... [2020-10-15 04:13:16,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:16" (1/1) ... [2020-10-15 04:13:16,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:16" (1/1) ... [2020-10-15 04:13:16,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:16" (1/1) ... [2020-10-15 04:13:16,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 04:13:16,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 04:13:16,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 04:13:16,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 04:13:16,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 04:13:16,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 04:13:16,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 04:13:16,826 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 04:13:16,826 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 04:13:16,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 04:13:16,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 04:13:16,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 04:13:16,829 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 04:13:16,829 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 04:13:16,829 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 04:13:16,829 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 04:13:16,830 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 04:13:16,830 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 04:13:16,830 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 04:13:16,830 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 04:13:16,831 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 04:13:16,831 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 04:13:16,831 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 04:13:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 04:13:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 04:13:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 04:13:16,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 04:13:19,016 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 04:13:19,016 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 04:13:19,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:13:19 BoogieIcfgContainer [2020-10-15 04:13:19,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 04:13:19,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 04:13:19,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 04:13:19,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 04:13:19,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 04:13:15" (1/3) ... [2020-10-15 04:13:19,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1ffce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:13:19, skipping insertion in model container [2020-10-15 04:13:19,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 04:13:16" (2/3) ... [2020-10-15 04:13:19,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1ffce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 04:13:19, skipping insertion in model container [2020-10-15 04:13:19,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 04:13:19" (3/3) ... [2020-10-15 04:13:19,033 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-15 04:13:19,043 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 04:13:19,052 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 04:13:19,066 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 04:13:19,092 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 04:13:19,092 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 04:13:19,093 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 04:13:19,093 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 04:13:19,093 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 04:13:19,093 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 04:13:19,093 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 04:13:19,093 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 04:13:19,156 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states. [2020-10-15 04:13:19,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-15 04:13:19,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:19,190 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] [2020-10-15 04:13:19,191 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:19,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:19,199 INFO L82 PathProgramCache]: Analyzing trace with hash 686807180, now seen corresponding path program 1 times [2020-10-15 04:13:19,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:19,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567634781] [2020-10-15 04:13:19,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:20,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:20,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:21,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:21,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:22,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:22,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:24,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:24,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-15 04:13:24,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 04:13:24,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-15 04:13:24,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:24,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:24,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:13:24,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-15 04:13:24,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 04:13:24,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 04:13:25,845 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:13:25,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:13:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:25,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:25,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:25,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:13:25,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:13:25,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 04:13:25,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:25,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:25,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:13:25,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:13:25,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:13:25,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:13:26,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567634781] [2020-10-15 04:13:26,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:13:26,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:13:26,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430843039] [2020-10-15 04:13:26,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:13:26,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:13:26,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:13:26,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:13:26,038 INFO L87 Difference]: Start difference. First operand 755 states. Second operand 4 states. [2020-10-15 04:13:27,122 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-15 04:13:32,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:13:32,590 INFO L93 Difference]: Finished difference Result 1189 states and 2110 transitions. [2020-10-15 04:13:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:13:32,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 197 [2020-10-15 04:13:32,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:13:32,628 INFO L225 Difference]: With dead ends: 1189 [2020-10-15 04:13:32,628 INFO L226 Difference]: Without dead ends: 958 [2020-10-15 04:13:32,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:32,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2020-10-15 04:13:32,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 956. [2020-10-15 04:13:32,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2020-10-15 04:13:32,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1674 transitions. [2020-10-15 04:13:32,774 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1674 transitions. Word has length 197 [2020-10-15 04:13:32,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:13:32,776 INFO L479 AbstractCegarLoop]: Abstraction has 956 states and 1674 transitions. [2020-10-15 04:13:32,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 04:13:32,776 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1674 transitions. [2020-10-15 04:13:32,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-15 04:13:32,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:32,783 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] [2020-10-15 04:13:32,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 04:13:32,783 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:32,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:32,784 INFO L82 PathProgramCache]: Analyzing trace with hash -642109807, now seen corresponding path program 1 times [2020-10-15 04:13:32,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:32,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212798342] [2020-10-15 04:13:32,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:32,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:33,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:33,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:34,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:34,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:35,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:35,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:36,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:36,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:37,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:37,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-15 04:13:37,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:13:37,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 04:13:37,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:37,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:13:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:13:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-15 04:13:37,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:39,149 WARN L193 SmtUtils]: Spent 944.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:13:39,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:13:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:39,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:39,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:39,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:13:39,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:13:39,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 04:13:39,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:39,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:39,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:13:39,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:13:39,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:13:39,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:39,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:13:39,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212798342] [2020-10-15 04:13:39,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:13:39,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:13:39,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742855410] [2020-10-15 04:13:39,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:13:39,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:13:39,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:13:39,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:39,496 INFO L87 Difference]: Start difference. First operand 956 states and 1674 transitions. Second operand 5 states. [2020-10-15 04:13:47,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:13:47,296 INFO L93 Difference]: Finished difference Result 2781 states and 4870 transitions. [2020-10-15 04:13:47,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:13:47,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 201 [2020-10-15 04:13:47,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:13:47,315 INFO L225 Difference]: With dead ends: 2781 [2020-10-15 04:13:47,315 INFO L226 Difference]: Without dead ends: 1876 [2020-10-15 04:13:47,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:13:47,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2020-10-15 04:13:47,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1874. [2020-10-15 04:13:47,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1874 states. [2020-10-15 04:13:47,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 3274 transitions. [2020-10-15 04:13:47,504 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 3274 transitions. Word has length 201 [2020-10-15 04:13:47,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:13:47,506 INFO L479 AbstractCegarLoop]: Abstraction has 1874 states and 3274 transitions. [2020-10-15 04:13:47,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:13:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 3274 transitions. [2020-10-15 04:13:47,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-15 04:13:47,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:13:47,514 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] [2020-10-15 04:13:47,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 04:13:47,514 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:13:47,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:13:47,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1844507295, now seen corresponding path program 1 times [2020-10-15 04:13:47,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:13:47,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720027397] [2020-10-15 04:13:47,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:13:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:47,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:48,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:48,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:49,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:49,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:49,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:50,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:50,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:50,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:51,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:52,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:52,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-15 04:13:52,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:13:52,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-15 04:13:52,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:52,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:52,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:13:52,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:13:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-15 04:13:52,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:54,195 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:13:54,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:13:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:13:54,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:13:54,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:13:54,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:13:54,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:13:54,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 04:13:54,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:13:54,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:13:54,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:13:54,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:13:54,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:13:54,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:13:54,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:13:54,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720027397] [2020-10-15 04:13:54,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:13:54,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:13:54,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089724647] [2020-10-15 04:13:54,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:13:54,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:13:54,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:13:54,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:13:54,540 INFO L87 Difference]: Start difference. First operand 1874 states and 3274 transitions. Second operand 5 states. [2020-10-15 04:14:01,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:14:01,078 INFO L93 Difference]: Finished difference Result 5462 states and 9539 transitions. [2020-10-15 04:14:01,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:14:01,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-15 04:14:01,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:14:01,100 INFO L225 Difference]: With dead ends: 5462 [2020-10-15 04:14:01,100 INFO L226 Difference]: Without dead ends: 3681 [2020-10-15 04:14:01,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:14:01,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2020-10-15 04:14:01,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3679. [2020-10-15 04:14:01,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3679 states. [2020-10-15 04:14:01,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3679 states to 3679 states and 6408 transitions. [2020-10-15 04:14:01,346 INFO L78 Accepts]: Start accepts. Automaton has 3679 states and 6408 transitions. Word has length 202 [2020-10-15 04:14:01,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:14:01,352 INFO L479 AbstractCegarLoop]: Abstraction has 3679 states and 6408 transitions. [2020-10-15 04:14:01,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:14:01,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3679 states and 6408 transitions. [2020-10-15 04:14:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-15 04:14:01,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:14:01,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 04:14:01,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 04:14:01,364 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:14:01,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:14:01,364 INFO L82 PathProgramCache]: Analyzing trace with hash 277053638, now seen corresponding path program 1 times [2020-10-15 04:14:01,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:14:01,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541647250] [2020-10-15 04:14:01,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:14:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:01,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:01,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:02,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:02,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:02,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:03,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:03,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:03,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:04,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:06,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:06,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-15 04:14:06,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:14:06,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-15 04:14:06,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:06,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:14:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:14:06,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-15 04:14:06,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:14:07,485 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:14:07,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:14:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:07,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:07,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:07,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:14:07,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:14:07,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 04:14:07,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:07,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:14:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:14:07,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:14:07,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:14:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:14:07,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541647250] [2020-10-15 04:14:07,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:14:07,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:14:07,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924121387] [2020-10-15 04:14:07,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:14:07,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:14:07,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:14:07,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:14:07,641 INFO L87 Difference]: Start difference. First operand 3679 states and 6408 transitions. Second operand 5 states. [2020-10-15 04:14:14,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:14:14,138 INFO L93 Difference]: Finished difference Result 10641 states and 18500 transitions. [2020-10-15 04:14:14,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:14:14,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-15 04:14:14,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:14:14,171 INFO L225 Difference]: With dead ends: 10641 [2020-10-15 04:14:14,172 INFO L226 Difference]: Without dead ends: 7175 [2020-10-15 04:14:14,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:14:14,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7175 states. [2020-10-15 04:14:14,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7175 to 7173. [2020-10-15 04:14:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7173 states. [2020-10-15 04:14:14,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7173 states to 7173 states and 12418 transitions. [2020-10-15 04:14:14,647 INFO L78 Accepts]: Start accepts. Automaton has 7173 states and 12418 transitions. Word has length 202 [2020-10-15 04:14:14,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:14:14,649 INFO L479 AbstractCegarLoop]: Abstraction has 7173 states and 12418 transitions. [2020-10-15 04:14:14,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:14:14,649 INFO L276 IsEmpty]: Start isEmpty. Operand 7173 states and 12418 transitions. [2020-10-15 04:14:14,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-15 04:14:14,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:14:14,666 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] [2020-10-15 04:14:14,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 04:14:14,666 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:14:14,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:14:14,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1219358235, now seen corresponding path program 1 times [2020-10-15 04:14:14,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:14:14,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314656731] [2020-10-15 04:14:14,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:14:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:14,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:14,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:15,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:15,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:15,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:16,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:16,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:16,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:16,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:19,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:19,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-15 04:14:19,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:14:19,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-15 04:14:19,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:19,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:14:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:14:19,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-15 04:14:19,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:14:20,706 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:14:20,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:14:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:20,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:20,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:20,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:14:20,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:14:20,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 04:14:20,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:20,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:20,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:14:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:14:20,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:14:20,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:14:20,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:14:20,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314656731] [2020-10-15 04:14:20,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:14:20,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:14:20,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239352316] [2020-10-15 04:14:20,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:14:20,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:14:20,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:14:20,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:14:20,849 INFO L87 Difference]: Start difference. First operand 7173 states and 12418 transitions. Second operand 5 states. [2020-10-15 04:14:27,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:14:27,021 INFO L93 Difference]: Finished difference Result 20999 states and 36320 transitions. [2020-10-15 04:14:27,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:14:27,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-15 04:14:27,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:14:27,078 INFO L225 Difference]: With dead ends: 20999 [2020-10-15 04:14:27,079 INFO L226 Difference]: Without dead ends: 13941 [2020-10-15 04:14:27,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:14:27,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13941 states. [2020-10-15 04:14:27,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13941 to 13939. [2020-10-15 04:14:27,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13939 states. [2020-10-15 04:14:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13939 states to 13939 states and 23996 transitions. [2020-10-15 04:14:27,915 INFO L78 Accepts]: Start accepts. Automaton has 13939 states and 23996 transitions. Word has length 203 [2020-10-15 04:14:27,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:14:27,915 INFO L479 AbstractCegarLoop]: Abstraction has 13939 states and 23996 transitions. [2020-10-15 04:14:27,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:14:27,915 INFO L276 IsEmpty]: Start isEmpty. Operand 13939 states and 23996 transitions. [2020-10-15 04:14:27,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-15 04:14:27,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:14:27,939 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] [2020-10-15 04:14:27,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 04:14:27,940 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:14:27,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:14:27,940 INFO L82 PathProgramCache]: Analyzing trace with hash 825135843, now seen corresponding path program 1 times [2020-10-15 04:14:27,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:14:27,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264979319] [2020-10-15 04:14:27,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:14:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:28,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:28,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:28,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:28,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:28,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:29,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:29,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:29,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:30,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:33,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:33,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-15 04:14:33,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:14:33,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-15 04:14:33,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:33,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:14:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:14:33,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-15 04:14:33,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:14:34,123 WARN L193 SmtUtils]: Spent 920.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:14:34,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:14:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:34,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:34,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:34,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:14:34,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:14:34,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:14:34,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:34,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:34,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:14:34,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:14:34,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:14:34,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:14:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:14:34,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264979319] [2020-10-15 04:14:34,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:14:34,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:14:34,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171862707] [2020-10-15 04:14:34,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:14:34,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:14:34,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:14:34,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:14:34,240 INFO L87 Difference]: Start difference. First operand 13939 states and 23996 transitions. Second operand 5 states. [2020-10-15 04:14:42,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:14:42,421 INFO L93 Difference]: Finished difference Result 40418 states and 69494 transitions. [2020-10-15 04:14:42,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:14:42,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-15 04:14:42,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:14:42,484 INFO L225 Difference]: With dead ends: 40418 [2020-10-15 04:14:42,484 INFO L226 Difference]: Without dead ends: 27422 [2020-10-15 04:14:42,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:14:42,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27422 states. [2020-10-15 04:14:44,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27422 to 27420. [2020-10-15 04:14:44,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27420 states. [2020-10-15 04:14:44,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27420 states to 27420 states and 47008 transitions. [2020-10-15 04:14:44,889 INFO L78 Accepts]: Start accepts. Automaton has 27420 states and 47008 transitions. Word has length 203 [2020-10-15 04:14:44,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:14:44,889 INFO L479 AbstractCegarLoop]: Abstraction has 27420 states and 47008 transitions. [2020-10-15 04:14:44,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:14:44,889 INFO L276 IsEmpty]: Start isEmpty. Operand 27420 states and 47008 transitions. [2020-10-15 04:14:44,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-15 04:14:44,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:14:44,925 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] [2020-10-15 04:14:44,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 04:14:44,926 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:14:44,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:14:44,926 INFO L82 PathProgramCache]: Analyzing trace with hash 358136663, now seen corresponding path program 1 times [2020-10-15 04:14:44,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:14:44,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837344384] [2020-10-15 04:14:44,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:14:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:45,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:45,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:45,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:45,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:46,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:46,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:46,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:47,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:47,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:47,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:50,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:50,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-15 04:14:50,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 04:14:50,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-15 04:14:50,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:50,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:14:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:14:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-15 04:14:50,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:14:51,008 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:14:51,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:14:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:14:51,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:14:51,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:14:51,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:14:51,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:14:51,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 04:14:51,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:14:51,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:14:51,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:14:51,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:14:51,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:14:51,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:14:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:14:51,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837344384] [2020-10-15 04:14:51,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:14:51,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:14:51,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359188042] [2020-10-15 04:14:51,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:14:51,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:14:51,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:14:51,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:14:51,110 INFO L87 Difference]: Start difference. First operand 27420 states and 47008 transitions. Second operand 5 states. [2020-10-15 04:15:00,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:15:00,480 INFO L93 Difference]: Finished difference Result 80881 states and 138651 transitions. [2020-10-15 04:15:00,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:15:00,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-15 04:15:00,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:15:00,599 INFO L225 Difference]: With dead ends: 80881 [2020-10-15 04:15:00,599 INFO L226 Difference]: Without dead ends: 54058 [2020-10-15 04:15:00,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:15:00,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54058 states. [2020-10-15 04:15:03,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54058 to 54056. [2020-10-15 04:15:03,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54056 states. [2020-10-15 04:15:03,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54056 states to 54056 states and 92239 transitions. [2020-10-15 04:15:03,718 INFO L78 Accepts]: Start accepts. Automaton has 54056 states and 92239 transitions. Word has length 204 [2020-10-15 04:15:03,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:15:03,719 INFO L479 AbstractCegarLoop]: Abstraction has 54056 states and 92239 transitions. [2020-10-15 04:15:03,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:15:03,719 INFO L276 IsEmpty]: Start isEmpty. Operand 54056 states and 92239 transitions. [2020-10-15 04:15:03,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-15 04:15:03,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:15:03,773 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] [2020-10-15 04:15:03,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 04:15:03,773 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:15:03,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:15:03,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1301578229, now seen corresponding path program 1 times [2020-10-15 04:15:03,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:15:03,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161100741] [2020-10-15 04:15:03,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:15:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:03,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:03,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:04,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:06,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:06,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:06,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:06,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:07,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:08,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:08,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:15:08,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-15 04:15:08,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:15:08,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-15 04:15:08,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:15:08,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:15:08,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:15:08,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:15:08,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-15 04:15:08,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:15:09,801 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:15:09,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:15:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:09,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:09,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:15:09,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:15:09,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:15:09,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 04:15:09,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:15:09,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:15:09,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:15:09,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:15:09,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:15:09,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:15:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:15:09,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161100741] [2020-10-15 04:15:09,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:15:09,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:15:09,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529811499] [2020-10-15 04:15:09,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:15:09,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:15:09,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:15:09,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:15:09,908 INFO L87 Difference]: Start difference. First operand 54056 states and 92239 transitions. Second operand 5 states. [2020-10-15 04:15:21,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:15:21,620 INFO L93 Difference]: Finished difference Result 158410 states and 270041 transitions. [2020-10-15 04:15:21,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:15:21,621 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-15 04:15:21,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:15:21,867 INFO L225 Difference]: With dead ends: 158410 [2020-10-15 04:15:21,867 INFO L226 Difference]: Without dead ends: 106344 [2020-10-15 04:15:21,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:15:22,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106344 states. [2020-10-15 04:15:28,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106344 to 106342. [2020-10-15 04:15:28,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106342 states. [2020-10-15 04:15:28,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106342 states to 106342 states and 180407 transitions. [2020-10-15 04:15:28,670 INFO L78 Accepts]: Start accepts. Automaton has 106342 states and 180407 transitions. Word has length 204 [2020-10-15 04:15:28,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:15:28,670 INFO L479 AbstractCegarLoop]: Abstraction has 106342 states and 180407 transitions. [2020-10-15 04:15:28,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:15:28,670 INFO L276 IsEmpty]: Start isEmpty. Operand 106342 states and 180407 transitions. [2020-10-15 04:15:28,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-15 04:15:28,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:15:28,767 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] [2020-10-15 04:15:28,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 04:15:28,768 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:15:28,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:15:28,768 INFO L82 PathProgramCache]: Analyzing trace with hash -75230424, now seen corresponding path program 1 times [2020-10-15 04:15:28,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:15:28,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45213447] [2020-10-15 04:15:28,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:15:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:28,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:28,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:29,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:29,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:29,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:29,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:30,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:30,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:30,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:33,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:15:33,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-15 04:15:33,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:15:33,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-15 04:15:33,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:15:33,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:15:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 04:15:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 04:15:33,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-15 04:15:33,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 04:15:34,823 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:15:34,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:15:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:15:34,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:15:34,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:15:34,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:15:34,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:15:34,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 04:15:34,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:15:34,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:15:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:15:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:15:34,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:15:34,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:15:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:15:34,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45213447] [2020-10-15 04:15:34,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:15:34,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 04:15:34,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116797532] [2020-10-15 04:15:34,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 04:15:34,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:15:34,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 04:15:34,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 04:15:34,985 INFO L87 Difference]: Start difference. First operand 106342 states and 180407 transitions. Second operand 5 states. [2020-10-15 04:15:55,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:15:55,730 INFO L93 Difference]: Finished difference Result 313413 states and 531720 transitions. [2020-10-15 04:15:55,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:15:55,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2020-10-15 04:15:55,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:15:56,116 INFO L225 Difference]: With dead ends: 313413 [2020-10-15 04:15:56,116 INFO L226 Difference]: Without dead ends: 208609 [2020-10-15 04:15:56,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 04:15:56,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208609 states. [2020-10-15 04:16:11,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208609 to 208607. [2020-10-15 04:16:11,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208607 states. [2020-10-15 04:16:12,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208607 states to 208607 states and 352377 transitions. [2020-10-15 04:16:12,037 INFO L78 Accepts]: Start accepts. Automaton has 208607 states and 352377 transitions. Word has length 205 [2020-10-15 04:16:12,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 04:16:12,037 INFO L479 AbstractCegarLoop]: Abstraction has 208607 states and 352377 transitions. [2020-10-15 04:16:12,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 04:16:12,038 INFO L276 IsEmpty]: Start isEmpty. Operand 208607 states and 352377 transitions. [2020-10-15 04:16:12,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-15 04:16:12,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 04:16:12,186 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] [2020-10-15 04:16:12,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 04:16:12,187 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 04:16:12,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 04:16:12,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1204263409, now seen corresponding path program 1 times [2020-10-15 04:16:12,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 04:16:12,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146094770] [2020-10-15 04:16:12,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 04:16:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:12,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:12,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:12,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:13,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:13,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:13,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:14,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:14,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:15,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:17,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:17,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-15 04:16:17,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 04:16:17,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-15 04:16:17,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:17,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:17,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 04:16:17,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-15 04:16:17,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 04:16:17,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:16:18,140 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 382 [2020-10-15 04:16:18,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 04:16:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 04:16:18,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 04:16:18,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 04:16:18,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 04:16:18,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 04:16:18,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 04:16:18,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 04:16:18,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 04:16:18,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 04:16:18,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 04:16:18,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 04:16:18,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 04:16:18,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 04:16:18,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146094770] [2020-10-15 04:16:18,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 04:16:18,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 04:16:18,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143675480] [2020-10-15 04:16:18,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 04:16:18,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 04:16:18,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 04:16:18,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 04:16:18,213 INFO L87 Difference]: Start difference. First operand 208607 states and 352377 transitions. Second operand 4 states. [2020-10-15 04:16:19,075 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 384 [2020-10-15 04:16:43,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 04:16:43,786 INFO L93 Difference]: Finished difference Result 395235 states and 664955 transitions. [2020-10-15 04:16:43,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 04:16:43,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2020-10-15 04:16:43,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 04:16:44,171 INFO L225 Difference]: With dead ends: 395235 [2020-10-15 04:16:44,171 INFO L226 Difference]: Without dead ends: 298977 [2020-10-15 04:16:44,265 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 [2020-10-15 04:16:45,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298977 states.