/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=BIGGEST --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_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:20:56,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:20:56,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:20:56,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:20:56,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:20:56,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:20:56,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:20:56,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:20:56,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:20:56,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:20:56,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:20:56,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:20:56,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:20:56,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:20:56,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:20:56,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:20:56,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:20:56,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:20:56,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:20:56,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:20:56,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:20:56,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:20:56,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:20:56,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:20:56,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:20:56,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:20:56,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:20:56,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:20:56,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:20:56,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:20:56,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:20:56,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:20:56,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:20:56,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:20:56,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:20:56,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:20:56,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:20:56,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:20:56,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:20:56,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:20:56,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:20:56,888 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 [2020-10-12 19:20:56,918 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:20:56,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:20:56,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:20:56,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:20:56,920 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:20:56,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:20:56,921 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:20:56,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:20:56,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:20:56,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:20:56,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:20:56,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:20:56,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:20:56,922 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:20:56,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:20:56,922 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:20:56,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:20:56,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:20:56,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:20:56,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:20:56,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:20:56,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:20:56,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:20:56,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:20:56,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:20:56,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:20:56,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:20:56,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:20:56,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:20:56,925 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:20:57,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:20:57,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:20:57,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:20:57,266 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:20:57,267 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:20:57,267 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 19:20:57,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6719d39c/b5140dc7f18c4c388d51357b0187838d/FLAG122be330d [2020-10-12 19:20:57,777 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:20:57,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 19:20:57,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6719d39c/b5140dc7f18c4c388d51357b0187838d/FLAG122be330d [2020-10-12 19:20:58,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b6719d39c/b5140dc7f18c4c388d51357b0187838d [2020-10-12 19:20:58,148 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:20:58,150 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:20:58,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:20:58,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:20:58,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:20:58,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:20:58" (1/1) ... [2020-10-12 19:20:58,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@261564d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:58, skipping insertion in model container [2020-10-12 19:20:58,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:20:58" (1/1) ... [2020-10-12 19:20:58,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:20:58,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:20:58,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:20:58,785 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:20:58,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:20:58,944 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:20:58,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:58 WrapperNode [2020-10-12 19:20:58,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:20:58,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:20:58,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:20:58,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:20:58,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:58" (1/1) ... [2020-10-12 19:20:58,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:58" (1/1) ... [2020-10-12 19:20:58,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:58" (1/1) ... [2020-10-12 19:20:58,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:58" (1/1) ... [2020-10-12 19:20:59,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:58" (1/1) ... [2020-10-12 19:20:59,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:58" (1/1) ... [2020-10-12 19:20:59,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:58" (1/1) ... [2020-10-12 19:20:59,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:20:59,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:20:59,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:20:59,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:20:59,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:58" (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 [2020-10-12 19:20:59,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:20:59,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:20:59,122 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:20:59,122 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:20:59,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:20:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:20:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:20:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:20:59,124 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:20:59,125 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:20:59,125 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:20:59,126 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:20:59,126 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:20:59,126 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:20:59,126 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:20:59,127 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:20:59,127 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:20:59,127 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:20:59,127 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:20:59,128 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:20:59,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:20:59,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:21:00,444 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:21:00,444 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:21:00,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:21:00 BoogieIcfgContainer [2020-10-12 19:21:00,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:21:00,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:21:00,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:21:00,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:21:00,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:20:58" (1/3) ... [2020-10-12 19:21:00,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7516673a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:21:00, skipping insertion in model container [2020-10-12 19:21:00,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:20:58" (2/3) ... [2020-10-12 19:21:00,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7516673a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:21:00, skipping insertion in model container [2020-10-12 19:21:00,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:21:00" (3/3) ... [2020-10-12 19:21:00,458 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-12 19:21:00,469 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:21:00,477 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:21:00,491 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:21:00,517 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:21:00,517 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:21:00,517 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:21:00,518 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:21:00,518 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:21:00,518 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:21:00,518 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:21:00,519 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:21:00,543 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-10-12 19:21:00,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-12 19:21:00,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:00,559 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] [2020-10-12 19:21:00,560 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:21:00,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:00,566 INFO L82 PathProgramCache]: Analyzing trace with hash -425912833, now seen corresponding path program 1 times [2020-10-12 19:21:00,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:00,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447356613] [2020-10-12 19:21:00,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:01,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:01,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:02,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:02,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:02,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:06,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:06,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-12 19:21:06,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:21:06,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:21:06,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:21:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:21:06,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 19:21:06,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:21:06,718 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:21:06,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:06,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:06,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:06,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:06,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:06,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:21:06,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:06,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:06,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:06,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:06,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:06,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:21:06,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447356613] [2020-10-12 19:21:06,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:06,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:21:06,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169823975] [2020-10-12 19:21:06,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:21:06,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:06,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:21:06,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:21:06,813 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 7 states. [2020-10-12 19:21:07,308 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-12 19:21:09,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:09,708 INFO L93 Difference]: Finished difference Result 1423 states and 2426 transitions. [2020-10-12 19:21:09,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 19:21:09,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-12 19:21:09,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:09,733 INFO L225 Difference]: With dead ends: 1423 [2020-10-12 19:21:09,733 INFO L226 Difference]: Without dead ends: 1265 [2020-10-12 19:21:09,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:21:09,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2020-10-12 19:21:09,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 459. [2020-10-12 19:21:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-10-12 19:21:09,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 764 transitions. [2020-10-12 19:21:09,827 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 764 transitions. Word has length 114 [2020-10-12 19:21:09,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:09,828 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 764 transitions. [2020-10-12 19:21:09,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:21:09,828 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 764 transitions. [2020-10-12 19:21:09,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-12 19:21:09,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:09,832 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] [2020-10-12 19:21:09,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:21:09,833 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:21:09,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:09,834 INFO L82 PathProgramCache]: Analyzing trace with hash -384564213, now seen corresponding path program 1 times [2020-10-12 19:21:09,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:09,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318216923] [2020-10-12 19:21:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:09,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:10,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:10,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:10,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:10,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:11,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:14,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:14,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 19:21:14,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:21:14,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:21:14,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:14,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:21:14,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 19:21:14,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 19:21:14,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 19:21:15,448 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:21:15,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:15,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:15,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:15,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:15,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:15,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 19:21:15,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:15,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:15,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:15,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:15,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:21:15,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318216923] [2020-10-12 19:21:15,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:15,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:21:15,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792293003] [2020-10-12 19:21:15,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:21:15,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:15,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:21:15,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:21:15,570 INFO L87 Difference]: Start difference. First operand 459 states and 764 transitions. Second operand 8 states. [2020-10-12 19:21:15,970 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-10-12 19:21:18,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:18,714 INFO L93 Difference]: Finished difference Result 3271 states and 5501 transitions. [2020-10-12 19:21:18,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:21:18,715 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2020-10-12 19:21:18,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:18,731 INFO L225 Difference]: With dead ends: 3271 [2020-10-12 19:21:18,732 INFO L226 Difference]: Without dead ends: 3005 [2020-10-12 19:21:18,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:21:18,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2020-10-12 19:21:18,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 1179. [2020-10-12 19:21:18,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1179 states. [2020-10-12 19:21:18,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 1979 transitions. [2020-10-12 19:21:18,843 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 1979 transitions. Word has length 115 [2020-10-12 19:21:18,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:18,844 INFO L479 AbstractCegarLoop]: Abstraction has 1179 states and 1979 transitions. [2020-10-12 19:21:18,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:21:18,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 1979 transitions. [2020-10-12 19:21:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 19:21:18,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:18,847 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] [2020-10-12 19:21:18,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:21:18,848 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:21:18,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:18,848 INFO L82 PathProgramCache]: Analyzing trace with hash 901801030, now seen corresponding path program 1 times [2020-10-12 19:21:18,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:18,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242809815] [2020-10-12 19:21:18,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:18,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:18,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:19,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:19,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:19,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:23,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:23,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 19:21:23,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:21:23,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-12 19:21:23,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:23,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:21:23,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:21:23,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 19:21:23,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:24,444 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:21:24,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:24,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:24,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:24,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:24,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:24,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:21:24,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:24,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:24,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:24,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:24,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:21:24,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242809815] [2020-10-12 19:21:24,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:24,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:21:24,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648337272] [2020-10-12 19:21:24,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:21:24,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:24,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:21:24,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:21:24,533 INFO L87 Difference]: Start difference. First operand 1179 states and 1979 transitions. Second operand 8 states. [2020-10-12 19:21:25,205 WARN L193 SmtUtils]: Spent 588.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-10-12 19:21:28,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:28,465 INFO L93 Difference]: Finished difference Result 9378 states and 15770 transitions. [2020-10-12 19:21:28,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:21:28,466 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 116 [2020-10-12 19:21:28,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:28,509 INFO L225 Difference]: With dead ends: 9378 [2020-10-12 19:21:28,510 INFO L226 Difference]: Without dead ends: 8489 [2020-10-12 19:21:28,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:21:28,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8489 states. [2020-10-12 19:21:28,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8489 to 3287. [2020-10-12 19:21:28,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3287 states. [2020-10-12 19:21:28,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 5521 transitions. [2020-10-12 19:21:28,890 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 5521 transitions. Word has length 116 [2020-10-12 19:21:28,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:28,891 INFO L479 AbstractCegarLoop]: Abstraction has 3287 states and 5521 transitions. [2020-10-12 19:21:28,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:21:28,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 5521 transitions. [2020-10-12 19:21:28,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-12 19:21:28,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:28,894 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] [2020-10-12 19:21:28,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:21:28,895 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:21:28,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:28,895 INFO L82 PathProgramCache]: Analyzing trace with hash 2128975922, now seen corresponding path program 1 times [2020-10-12 19:21:28,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:28,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492881031] [2020-10-12 19:21:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:28,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:29,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:33,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:33,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-12 19:21:33,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:21:33,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4922 [2020-10-12 19:21:33,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:33,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:21:33,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:21:33,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 19:21:33,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:21:34,279 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:21:34,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:34,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:34,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:34,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:34,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:34,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:21:34,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:34,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:34,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:34,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:34,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:21:34,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:21:34,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492881031] [2020-10-12 19:21:34,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:34,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:21:34,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93586424] [2020-10-12 19:21:34,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:21:34,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:34,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:21:34,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:21:34,353 INFO L87 Difference]: Start difference. First operand 3287 states and 5521 transitions. Second operand 8 states. [2020-10-12 19:21:34,741 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-10-12 19:21:38,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:38,176 INFO L93 Difference]: Finished difference Result 26706 states and 44819 transitions. [2020-10-12 19:21:38,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:21:38,177 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2020-10-12 19:21:38,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:38,268 INFO L225 Difference]: With dead ends: 26706 [2020-10-12 19:21:38,269 INFO L226 Difference]: Without dead ends: 23820 [2020-10-12 19:21:38,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:21:38,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23820 states. [2020-10-12 19:21:39,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23820 to 9135. [2020-10-12 19:21:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9135 states. [2020-10-12 19:21:39,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9135 states to 9135 states and 15319 transitions. [2020-10-12 19:21:39,247 INFO L78 Accepts]: Start accepts. Automaton has 9135 states and 15319 transitions. Word has length 117 [2020-10-12 19:21:39,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:39,248 INFO L479 AbstractCegarLoop]: Abstraction has 9135 states and 15319 transitions. [2020-10-12 19:21:39,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:21:39,248 INFO L276 IsEmpty]: Start isEmpty. Operand 9135 states and 15319 transitions. [2020-10-12 19:21:39,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-12 19:21:39,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:39,250 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] [2020-10-12 19:21:39,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:21:39,251 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:21:39,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:39,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1521249933, now seen corresponding path program 1 times [2020-10-12 19:21:39,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:39,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994352348] [2020-10-12 19:21:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:39,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:39,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:39,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:39,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:39,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:39,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:43,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:43,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-12 19:21:43,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:21:43,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3839 [2020-10-12 19:21:43,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:43,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:21:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:21:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 19:21:43,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:43,501 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:21:43,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:43,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:43,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:43,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:43,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:43,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:21:43,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:43,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:43,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:43,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:43,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:43,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:21:43,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994352348] [2020-10-12 19:21:43,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:43,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:21:43,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490343837] [2020-10-12 19:21:43,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:21:43,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:43,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:21:43,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:21:43,555 INFO L87 Difference]: Start difference. First operand 9135 states and 15319 transitions. Second operand 8 states. [2020-10-12 19:21:43,945 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2020-10-12 19:21:50,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:21:50,057 INFO L93 Difference]: Finished difference Result 77348 states and 129517 transitions. [2020-10-12 19:21:50,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 19:21:50,057 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-10-12 19:21:50,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:21:50,250 INFO L225 Difference]: With dead ends: 77348 [2020-10-12 19:21:50,251 INFO L226 Difference]: Without dead ends: 68691 [2020-10-12 19:21:50,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:21:50,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68691 states. [2020-10-12 19:21:53,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68691 to 25437. [2020-10-12 19:21:53,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25437 states. [2020-10-12 19:21:53,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25437 states to 25437 states and 42559 transitions. [2020-10-12 19:21:53,349 INFO L78 Accepts]: Start accepts. Automaton has 25437 states and 42559 transitions. Word has length 118 [2020-10-12 19:21:53,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:21:53,349 INFO L479 AbstractCegarLoop]: Abstraction has 25437 states and 42559 transitions. [2020-10-12 19:21:53,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:21:53,350 INFO L276 IsEmpty]: Start isEmpty. Operand 25437 states and 42559 transitions. [2020-10-12 19:21:53,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 19:21:53,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:21:53,353 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] [2020-10-12 19:21:53,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:21:53,353 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:21:53,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:21:53,354 INFO L82 PathProgramCache]: Analyzing trace with hash -686071726, now seen corresponding path program 1 times [2020-10-12 19:21:53,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:21:53,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995162106] [2020-10-12 19:21:53,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:21:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:53,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:53,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:53,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:53,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:53,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:54,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:54,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:58,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:58,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 19:21:58,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:21:58,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:21:58,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:21:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:21:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 19:21:58,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:58,830 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:21:58,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:21:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:21:58,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:21:58,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:21:58,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:21:58,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:21:58,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:21:58,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:21:58,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:21:58,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:21:58,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:21:58,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:21:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:21:58,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995162106] [2020-10-12 19:21:58,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:21:58,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:21:58,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215275850] [2020-10-12 19:21:58,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:21:58,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:21:58,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:21:58,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:21:58,918 INFO L87 Difference]: Start difference. First operand 25437 states and 42559 transitions. Second operand 5 states. [2020-10-12 19:22:04,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:22:04,995 INFO L93 Difference]: Finished difference Result 75172 states and 125847 transitions. [2020-10-12 19:22:04,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:22:04,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-12 19:22:04,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:22:05,135 INFO L225 Difference]: With dead ends: 75172 [2020-10-12 19:22:05,136 INFO L226 Difference]: Without dead ends: 49800 [2020-10-12 19:22:05,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:22:05,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49800 states. [2020-10-12 19:22:09,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49800 to 49798. [2020-10-12 19:22:09,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49798 states. [2020-10-12 19:22:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49798 states to 49798 states and 82992 transitions. [2020-10-12 19:22:09,619 INFO L78 Accepts]: Start accepts. Automaton has 49798 states and 82992 transitions. Word has length 120 [2020-10-12 19:22:09,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:22:09,620 INFO L479 AbstractCegarLoop]: Abstraction has 49798 states and 82992 transitions. [2020-10-12 19:22:09,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:22:09,620 INFO L276 IsEmpty]: Start isEmpty. Operand 49798 states and 82992 transitions. [2020-10-12 19:22:09,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 19:22:09,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:22:09,625 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] [2020-10-12 19:22:09,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:22:09,625 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:22:09,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:22:09,626 INFO L82 PathProgramCache]: Analyzing trace with hash 140817538, now seen corresponding path program 1 times [2020-10-12 19:22:09,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:22:09,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541369499] [2020-10-12 19:22:09,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:22:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:09,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:09,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:09,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:09,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:10,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:10,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:13,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:13,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:14,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:14,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:14,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:22:14,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 19:22:14,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:22:14,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:22:14,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:22:14,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:22:14,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:22:14,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 19:22:14,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:22:15,045 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:22:15,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:22:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:15,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:15,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:22:15,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:22:15,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:22:15,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:22:15,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:22:15,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:22:15,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:22:15,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:22:15,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:22:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:22:15,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541369499] [2020-10-12 19:22:15,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:22:15,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:22:15,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964344474] [2020-10-12 19:22:15,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:22:15,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:22:15,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:22:15,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:22:15,095 INFO L87 Difference]: Start difference. First operand 49798 states and 82992 transitions. Second operand 7 states. [2020-10-12 19:22:15,442 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-10-12 19:22:32,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:22:32,739 INFO L93 Difference]: Finished difference Result 240491 states and 400644 transitions. [2020-10-12 19:22:32,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 19:22:32,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-12 19:22:32,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:22:33,225 INFO L225 Difference]: With dead ends: 240491 [2020-10-12 19:22:33,225 INFO L226 Difference]: Without dead ends: 191603 [2020-10-12 19:22:33,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:22:33,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191603 states. [2020-10-12 19:22:43,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191603 to 94249. [2020-10-12 19:22:43,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94249 states. [2020-10-12 19:22:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94249 states to 94249 states and 156769 transitions. [2020-10-12 19:22:44,047 INFO L78 Accepts]: Start accepts. Automaton has 94249 states and 156769 transitions. Word has length 120 [2020-10-12 19:22:44,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:22:44,047 INFO L479 AbstractCegarLoop]: Abstraction has 94249 states and 156769 transitions. [2020-10-12 19:22:44,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:22:44,047 INFO L276 IsEmpty]: Start isEmpty. Operand 94249 states and 156769 transitions. [2020-10-12 19:22:44,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 19:22:44,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:22:44,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:22:44,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:22:44,051 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:22:44,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:22:44,052 INFO L82 PathProgramCache]: Analyzing trace with hash 286337891, now seen corresponding path program 1 times [2020-10-12 19:22:44,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:22:44,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359996197] [2020-10-12 19:22:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:22:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:44,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:44,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:44,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:44,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:44,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:44,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:44,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:45,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:45,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:49,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:22:49,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 19:22:49,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:22:49,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 19:22:49,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:22:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:22:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:22:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 19:22:49,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:22:49,447 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:22:49,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:22:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:22:49,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:22:49,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:22:49,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:22:49,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:22:49,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:22:49,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:22:49,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:22:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:22:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:22:49,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:22:49,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:22:49,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359996197] [2020-10-12 19:22:49,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:22:49,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:22:49,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903268817] [2020-10-12 19:22:49,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:22:49,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:22:49,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:22:49,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:22:49,488 INFO L87 Difference]: Start difference. First operand 94249 states and 156769 transitions. Second operand 7 states. [2020-10-12 19:22:49,868 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2020-10-12 19:23:14,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:23:14,082 INFO L93 Difference]: Finished difference Result 304431 states and 506113 transitions. [2020-10-12 19:23:14,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 19:23:14,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-12 19:23:14,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:23:14,550 INFO L225 Difference]: With dead ends: 304431 [2020-10-12 19:23:14,550 INFO L226 Difference]: Without dead ends: 250206 [2020-10-12 19:23:14,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:23:14,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250206 states. [2020-10-12 19:23:30,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250206 to 152644. [2020-10-12 19:23:30,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152644 states. [2020-10-12 19:23:31,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152644 states to 152644 states and 253761 transitions. [2020-10-12 19:23:31,156 INFO L78 Accepts]: Start accepts. Automaton has 152644 states and 253761 transitions. Word has length 120 [2020-10-12 19:23:31,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:23:31,156 INFO L479 AbstractCegarLoop]: Abstraction has 152644 states and 253761 transitions. [2020-10-12 19:23:31,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:23:31,157 INFO L276 IsEmpty]: Start isEmpty. Operand 152644 states and 253761 transitions. [2020-10-12 19:23:31,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 19:23:31,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:23:31,161 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] [2020-10-12 19:23:31,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:23:31,161 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:23:31,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:23:31,161 INFO L82 PathProgramCache]: Analyzing trace with hash 142676029, now seen corresponding path program 1 times [2020-10-12 19:23:31,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:23:31,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179843454] [2020-10-12 19:23:31,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:23:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:23:31,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:31,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:31,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:31,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:31,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:34,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:23:34,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 19:23:34,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 19:23:34,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3210 [2020-10-12 19:23:34,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:23:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:23:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:23:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 19:23:34,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:23:34,794 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:23:34,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:23:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:23:34,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:23:34,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:23:34,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:23:34,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:23:34,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:23:34,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:23:34,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:23:34,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:23:34,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:23:34,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:23:34,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:23:34,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179843454] [2020-10-12 19:23:34,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:23:34,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:23:34,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682128730] [2020-10-12 19:23:34,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:23:34,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:23:34,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:23:34,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:23:34,832 INFO L87 Difference]: Start difference. First operand 152644 states and 253761 transitions. Second operand 7 states. [2020-10-12 19:23:35,254 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-12 19:24:01,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:24:01,855 INFO L93 Difference]: Finished difference Result 401022 states and 666690 transitions. [2020-10-12 19:24:01,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 19:24:01,855 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-12 19:24:01,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:24:02,227 INFO L225 Difference]: With dead ends: 401022 [2020-10-12 19:24:02,227 INFO L226 Difference]: Without dead ends: 249288 [2020-10-12 19:24:02,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:24:02,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249288 states. [2020-10-12 19:24:20,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249288 to 152644. [2020-10-12 19:24:20,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152644 states. [2020-10-12 19:24:20,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152644 states to 152644 states and 253633 transitions. [2020-10-12 19:24:20,626 INFO L78 Accepts]: Start accepts. Automaton has 152644 states and 253633 transitions. Word has length 120 [2020-10-12 19:24:20,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:24:20,626 INFO L479 AbstractCegarLoop]: Abstraction has 152644 states and 253633 transitions. [2020-10-12 19:24:20,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:24:20,626 INFO L276 IsEmpty]: Start isEmpty. Operand 152644 states and 253633 transitions. [2020-10-12 19:24:20,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-12 19:24:20,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:24:20,630 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] [2020-10-12 19:24:20,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:24:20,631 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:24:20,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:24:20,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1151918923, now seen corresponding path program 1 times [2020-10-12 19:24:20,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:24:20,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743288539] [2020-10-12 19:24:20,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:24:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:24:20,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:20,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:20,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:20,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:21,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:21,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:25,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:25,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:25,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:25,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:24:25,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-12 19:24:25,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:24:25,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 19:24:25,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:24:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:24:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-12 19:24:25,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 19:24:25,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:24:26,054 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-12 19:24:26,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:24:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:24:26,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:24:26,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:24:26,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:24:26,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:24:26,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:24:26,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:24:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:24:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:24:26,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:24:26,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:24:26,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:24:26,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743288539] [2020-10-12 19:24:26,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:24:26,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:24:26,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288506121] [2020-10-12 19:24:26,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:24:26,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:24:26,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:24:26,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:24:26,090 INFO L87 Difference]: Start difference. First operand 152644 states and 253633 transitions. Second operand 7 states. [2020-10-12 19:24:26,462 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 256