/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_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:41:18,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:41:18,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:41:18,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:41:18,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:41:18,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:41:18,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:41:18,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:41:18,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:41:18,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:41:18,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:41:18,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:41:18,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:41:18,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:41:18,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:41:18,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:41:18,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:41:18,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:41:18,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:41:18,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:41:18,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:41:18,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:41:18,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:41:18,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:41:18,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:41:18,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:41:18,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:41:18,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:41:18,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:41:18,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:41:18,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:41:18,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:41:18,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:41:18,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:41:18,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:41:18,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:41:18,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:41:18,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:41:18,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:41:18,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:41:18,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:41:18,977 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 19:41:19,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:41:19,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:41:19,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:41:19,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:41:19,021 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:41:19,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:41:19,021 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:41:19,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:41:19,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:41:19,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:41:19,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:41:19,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:41:19,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:41:19,024 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:41:19,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:41:19,024 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:41:19,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:41:19,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:41:19,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:41:19,025 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:41:19,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:41:19,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:41:19,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:41:19,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:41:19,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:41:19,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:41:19,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:41:19,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:41:19,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:41:19,027 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 19:41:19,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:41:19,335 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:41:19,337 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:41:19,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:41:19,339 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:41:19,339 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-12 19:41:19,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee00da30e/ed1d60c79ffc4bd5bccd5f192995b15d/FLAG57bff6c9d [2020-10-12 19:41:19,957 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:41:19,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-12 19:41:19,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee00da30e/ed1d60c79ffc4bd5bccd5f192995b15d/FLAG57bff6c9d [2020-10-12 19:41:20,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee00da30e/ed1d60c79ffc4bd5bccd5f192995b15d [2020-10-12 19:41:20,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:41:20,218 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:41:20,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:41:20,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:41:20,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:41:20,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:41:20" (1/1) ... [2020-10-12 19:41:20,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d16764e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:41:20, skipping insertion in model container [2020-10-12 19:41:20,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:41:20" (1/1) ... [2020-10-12 19:41:20,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:41:20,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:41:20,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:41:20,620 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:41:20,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:41:20,883 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:41:20,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:41:20 WrapperNode [2020-10-12 19:41:20,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:41:20,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:41:20,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:41:20,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:41:20,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:41:20" (1/1) ... [2020-10-12 19:41:20,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:41:20" (1/1) ... [2020-10-12 19:41:20,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:41:20" (1/1) ... [2020-10-12 19:41:20,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:41:20" (1/1) ... [2020-10-12 19:41:20,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:41:20" (1/1) ... [2020-10-12 19:41:20,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:41:20" (1/1) ... [2020-10-12 19:41:20,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:41:20" (1/1) ... [2020-10-12 19:41:20,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:41:20,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:41:20,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:41:20,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:41:20,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:41:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:41:21,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:41:21,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:41:21,029 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:41:21,029 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:41:21,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:41:21,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:41:21,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:41:21,030 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:41:21,030 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:41:21,030 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:41:21,031 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:41:21,031 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:41:21,031 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:41:21,031 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:41:21,031 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:41:21,031 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:41:21,032 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:41:21,032 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 19:41:21,032 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:41:21,032 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:41:21,032 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:41:21,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:41:21,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:41:21,913 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:41:21,913 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:41:21,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:41:21 BoogieIcfgContainer [2020-10-12 19:41:21,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:41:21,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:41:21,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:41:21,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:41:21,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:41:20" (1/3) ... [2020-10-12 19:41:21,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e27aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:41:21, skipping insertion in model container [2020-10-12 19:41:21,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:41:20" (2/3) ... [2020-10-12 19:41:21,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e27aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:41:21, skipping insertion in model container [2020-10-12 19:41:21,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:41:21" (3/3) ... [2020-10-12 19:41:21,928 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-12 19:41:21,940 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:41:21,948 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:41:21,963 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:41:22,006 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:41:22,007 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:41:22,007 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:41:22,007 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:41:22,008 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:41:22,008 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:41:22,008 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:41:22,008 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:41:22,038 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-10-12 19:41:22,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 19:41:22,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:22,057 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] [2020-10-12 19:41:22,058 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:22,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:22,067 INFO L82 PathProgramCache]: Analyzing trace with hash -541697796, now seen corresponding path program 1 times [2020-10-12 19:41:22,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:22,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059675026] [2020-10-12 19:41:22,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:22,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:22,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:22,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:23,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:23,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:23,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:23,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:24,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:24,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:24,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:24,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:25,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:27,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:27,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 19:41:27,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:41:27,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 19:41:27,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:27,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:41:27,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 19:41:27,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 19:41:27,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 19:41:27,872 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:41:27,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:27,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:27,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:27,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:27,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:27,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 19:41:27,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:27,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:27,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:27,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:27,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:41:27,976 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 19:41:27,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059675026] [2020-10-12 19:41:27,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:27,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:41:27,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58638317] [2020-10-12 19:41:27,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:41:27,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:28,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:41:28,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:41:28,020 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 7 states. [2020-10-12 19:41:28,379 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 19:41:30,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:30,628 INFO L93 Difference]: Finished difference Result 920 states and 1490 transitions. [2020-10-12 19:41:30,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:41:30,630 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-12 19:41:30,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:30,666 INFO L225 Difference]: With dead ends: 920 [2020-10-12 19:41:30,666 INFO L226 Difference]: Without dead ends: 764 [2020-10-12 19:41:30,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:41:30,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2020-10-12 19:41:30,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 379. [2020-10-12 19:41:30,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-10-12 19:41:30,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 554 transitions. [2020-10-12 19:41:30,796 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 554 transitions. Word has length 95 [2020-10-12 19:41:30,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:30,797 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 554 transitions. [2020-10-12 19:41:30,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:41:30,798 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 554 transitions. [2020-10-12 19:41:30,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-12 19:41:30,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:30,802 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] [2020-10-12 19:41:30,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:41:30,803 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:30,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:30,803 INFO L82 PathProgramCache]: Analyzing trace with hash 697673707, now seen corresponding path program 1 times [2020-10-12 19:41:30,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:30,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089803910] [2020-10-12 19:41:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:30,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:30,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:30,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:31,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:31,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:31,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:31,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:31,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:31,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:32,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:33,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:35,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:35,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 19:41:35,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:41:35,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:41:35,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:41:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:41:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 19:41:35,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:36,166 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:41:36,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:36,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:36,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:36,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:36,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:36,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:41:36,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:36,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:36,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:36,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:36,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:41:36,227 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 19:41:36,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089803910] [2020-10-12 19:41:36,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:36,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:41:36,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54822934] [2020-10-12 19:41:36,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:41:36,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:36,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:41:36,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:41:36,233 INFO L87 Difference]: Start difference. First operand 379 states and 554 transitions. Second operand 7 states. [2020-10-12 19:41:36,530 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 19:41:38,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:38,439 INFO L93 Difference]: Finished difference Result 2373 states and 3688 transitions. [2020-10-12 19:41:38,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:41:38,440 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-12 19:41:38,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:38,452 INFO L225 Difference]: With dead ends: 2373 [2020-10-12 19:41:38,452 INFO L226 Difference]: Without dead ends: 2068 [2020-10-12 19:41:38,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:41:38,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2020-10-12 19:41:38,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 956. [2020-10-12 19:41:38,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 956 states. [2020-10-12 19:41:38,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1450 transitions. [2020-10-12 19:41:38,524 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1450 transitions. Word has length 96 [2020-10-12 19:41:38,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:38,525 INFO L479 AbstractCegarLoop]: Abstraction has 956 states and 1450 transitions. [2020-10-12 19:41:38,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:41:38,525 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1450 transitions. [2020-10-12 19:41:38,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-12 19:41:38,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:38,529 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] [2020-10-12 19:41:38,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:41:38,530 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:38,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:38,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1915709099, now seen corresponding path program 1 times [2020-10-12 19:41:38,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:38,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543005188] [2020-10-12 19:41:38,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:38,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:38,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:38,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:38,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:38,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:39,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:39,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:42,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:42,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:43,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:43,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:43,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:43,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:43,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 19:41:43,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:41:43,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:41:43,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:43,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:41:43,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:41:43,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 19:41:43,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:44,117 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:41:44,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:44,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:44,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:44,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:44,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:44,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:41:44,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:44,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:44,178 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 19:41:44,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543005188] [2020-10-12 19:41:44,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:44,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:41:44,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220322922] [2020-10-12 19:41:44,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:41:44,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:44,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:41:44,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:41:44,181 INFO L87 Difference]: Start difference. First operand 956 states and 1450 transitions. Second operand 12 states. [2020-10-12 19:41:44,457 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-12 19:41:49,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:49,019 INFO L93 Difference]: Finished difference Result 6803 states and 10582 transitions. [2020-10-12 19:41:49,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 19:41:49,019 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-10-12 19:41:49,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:49,051 INFO L225 Difference]: With dead ends: 6803 [2020-10-12 19:41:49,051 INFO L226 Difference]: Without dead ends: 6063 [2020-10-12 19:41:49,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=299, Invalid=1183, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 19:41:49,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6063 states. [2020-10-12 19:41:49,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6063 to 1046. [2020-10-12 19:41:49,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-10-12 19:41:49,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1566 transitions. [2020-10-12 19:41:49,279 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1566 transitions. Word has length 97 [2020-10-12 19:41:49,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:49,281 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1566 transitions. [2020-10-12 19:41:49,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:41:49,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1566 transitions. [2020-10-12 19:41:49,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-12 19:41:49,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:49,285 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] [2020-10-12 19:41:49,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:41:49,285 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:49,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:49,289 INFO L82 PathProgramCache]: Analyzing trace with hash -130949892, now seen corresponding path program 1 times [2020-10-12 19:41:49,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:49,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427781625] [2020-10-12 19:41:49,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:49,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:49,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:49,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:49,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:49,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:49,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:49,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:54,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:54,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 19:41:54,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:41:54,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 19:41:54,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:54,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:41:54,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 19:41:54,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 19:41:54,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:41:54,552 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:41:54,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:54,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:54,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:54,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:54,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:54,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:41:54,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:54,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:54,597 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 19:41:54,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427781625] [2020-10-12 19:41:54,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:54,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:41:54,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503021603] [2020-10-12 19:41:54,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:41:54,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:54,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:41:54,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:41:54,602 INFO L87 Difference]: Start difference. First operand 1046 states and 1566 transitions. Second operand 7 states. [2020-10-12 19:41:54,839 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 19:41:57,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:57,260 INFO L93 Difference]: Finished difference Result 5157 states and 8074 transitions. [2020-10-12 19:41:57,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:41:57,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-12 19:41:57,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:57,281 INFO L225 Difference]: With dead ends: 5157 [2020-10-12 19:41:57,282 INFO L226 Difference]: Without dead ends: 4384 [2020-10-12 19:41:57,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:41:57,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4384 states. [2020-10-12 19:41:57,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4384 to 1710. [2020-10-12 19:41:57,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1710 states. [2020-10-12 19:41:57,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2615 transitions. [2020-10-12 19:41:57,501 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2615 transitions. Word has length 97 [2020-10-12 19:41:57,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:57,502 INFO L479 AbstractCegarLoop]: Abstraction has 1710 states and 2615 transitions. [2020-10-12 19:41:57,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:41:57,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2615 transitions. [2020-10-12 19:41:57,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-12 19:41:57,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:57,505 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] [2020-10-12 19:41:57,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:41:57,506 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:57,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:57,506 INFO L82 PathProgramCache]: Analyzing trace with hash 754086635, now seen corresponding path program 1 times [2020-10-12 19:41:57,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:57,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621787964] [2020-10-12 19:41:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:57,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:57,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:57,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:57,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:57,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:58,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:58,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:59,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:00,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:00,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:02,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:02,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 19:42:02,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:42:02,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 19:42:02,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:02,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:42:02,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:42:02,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 19:42:02,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:02,784 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:42:02,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:02,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:02,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:02,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:02,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:02,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:42:02,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:02,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:42:02,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:02,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:42:02,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:42:02,835 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 19:42:02,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621787964] [2020-10-12 19:42:02,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:02,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:42:02,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489263342] [2020-10-12 19:42:02,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:42:02,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:02,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:42:02,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:42:02,844 INFO L87 Difference]: Start difference. First operand 1710 states and 2615 transitions. Second operand 7 states. [2020-10-12 19:42:03,077 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 19:42:05,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:05,071 INFO L93 Difference]: Finished difference Result 8365 states and 13040 transitions. [2020-10-12 19:42:05,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:42:05,071 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-10-12 19:42:05,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:05,106 INFO L225 Difference]: With dead ends: 8365 [2020-10-12 19:42:05,106 INFO L226 Difference]: Without dead ends: 7423 [2020-10-12 19:42:05,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:42:05,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7423 states. [2020-10-12 19:42:05,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7423 to 3273. [2020-10-12 19:42:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3273 states. [2020-10-12 19:42:05,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3273 states to 3273 states and 5034 transitions. [2020-10-12 19:42:05,575 INFO L78 Accepts]: Start accepts. Automaton has 3273 states and 5034 transitions. Word has length 97 [2020-10-12 19:42:05,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:05,575 INFO L479 AbstractCegarLoop]: Abstraction has 3273 states and 5034 transitions. [2020-10-12 19:42:05,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:42:05,576 INFO L276 IsEmpty]: Start isEmpty. Operand 3273 states and 5034 transitions. [2020-10-12 19:42:05,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 19:42:05,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:05,579 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] [2020-10-12 19:42:05,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:42:05,579 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:05,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:05,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1807654445, now seen corresponding path program 1 times [2020-10-12 19:42:05,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:05,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384395208] [2020-10-12 19:42:05,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:05,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:05,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:05,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:05,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:05,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:06,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:06,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:06,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:10,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:10,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:10,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:10,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:10,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 19:42:10,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:42:10,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:42:10,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:42:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:42:10,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 19:42:10,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:42:11,027 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:42:11,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:11,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:11,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:11,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:11,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:11,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:42:11,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:42:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:11,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:42:11,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:11,078 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 19:42:11,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384395208] [2020-10-12 19:42:11,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:11,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:42:11,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672225324] [2020-10-12 19:42:11,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:42:11,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:11,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:42:11,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:42:11,081 INFO L87 Difference]: Start difference. First operand 3273 states and 5034 transitions. Second operand 11 states. [2020-10-12 19:42:11,334 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-12 19:42:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:16,552 INFO L93 Difference]: Finished difference Result 24282 states and 37925 transitions. [2020-10-12 19:42:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 19:42:16,552 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-12 19:42:16,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:16,617 INFO L225 Difference]: With dead ends: 24282 [2020-10-12 19:42:16,617 INFO L226 Difference]: Without dead ends: 21524 [2020-10-12 19:42:16,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2020-10-12 19:42:16,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21524 states. [2020-10-12 19:42:17,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21524 to 3273. [2020-10-12 19:42:17,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3273 states. [2020-10-12 19:42:17,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3273 states to 3273 states and 5028 transitions. [2020-10-12 19:42:17,294 INFO L78 Accepts]: Start accepts. Automaton has 3273 states and 5028 transitions. Word has length 98 [2020-10-12 19:42:17,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:17,294 INFO L479 AbstractCegarLoop]: Abstraction has 3273 states and 5028 transitions. [2020-10-12 19:42:17,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:42:17,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3273 states and 5028 transitions. [2020-10-12 19:42:17,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 19:42:17,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:17,298 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] [2020-10-12 19:42:17,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:42:17,298 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:17,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:17,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1273407892, now seen corresponding path program 1 times [2020-10-12 19:42:17,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:17,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871174991] [2020-10-12 19:42:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:17,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:17,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:17,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:17,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:17,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:17,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:17,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:20,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:20,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:20,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:22,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:22,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 19:42:22,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:42:22,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:42:22,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:42:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:42:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 19:42:22,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:22,534 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:42:22,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:22,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:22,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:22,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:22,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:22,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:42:22,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:42:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:22,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:42:22,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:22,570 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 19:42:22,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871174991] [2020-10-12 19:42:22,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:22,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:42:22,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107583078] [2020-10-12 19:42:22,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:42:22,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:22,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:42:22,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:42:22,573 INFO L87 Difference]: Start difference. First operand 3273 states and 5028 transitions. Second operand 7 states. [2020-10-12 19:42:22,787 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 19:42:25,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:25,769 INFO L93 Difference]: Finished difference Result 17113 states and 26748 transitions. [2020-10-12 19:42:25,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:42:25,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 98 [2020-10-12 19:42:25,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:25,805 INFO L225 Difference]: With dead ends: 17113 [2020-10-12 19:42:25,805 INFO L226 Difference]: Without dead ends: 14255 [2020-10-12 19:42:25,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:42:25,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14255 states. [2020-10-12 19:42:26,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14255 to 4988. [2020-10-12 19:42:26,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4988 states. [2020-10-12 19:42:26,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4988 states to 4988 states and 7709 transitions. [2020-10-12 19:42:26,519 INFO L78 Accepts]: Start accepts. Automaton has 4988 states and 7709 transitions. Word has length 98 [2020-10-12 19:42:26,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:26,520 INFO L479 AbstractCegarLoop]: Abstraction has 4988 states and 7709 transitions. [2020-10-12 19:42:26,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:42:26,520 INFO L276 IsEmpty]: Start isEmpty. Operand 4988 states and 7709 transitions. [2020-10-12 19:42:26,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 19:42:26,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:26,524 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] [2020-10-12 19:42:26,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:42:26,525 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:26,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:26,525 INFO L82 PathProgramCache]: Analyzing trace with hash 2084160026, now seen corresponding path program 1 times [2020-10-12 19:42:26,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:26,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314898399] [2020-10-12 19:42:26,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:26,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:27,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:27,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:27,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:27,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:27,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:28,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:28,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:31,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:31,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 19:42:31,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:42:31,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:42:31,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:31,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:42:31,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:42:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 19:42:31,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:32,029 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:42:32,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:32,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:32,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:32,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:32,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:32,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:42:32,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:32,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:42:32,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:32,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:42:32,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:32,096 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 19:42:32,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314898399] [2020-10-12 19:42:32,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:32,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:42:32,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568274657] [2020-10-12 19:42:32,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:42:32,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:32,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:42:32,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:42:32,101 INFO L87 Difference]: Start difference. First operand 4988 states and 7709 transitions. Second operand 12 states. [2020-10-12 19:42:32,508 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-12 19:42:40,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:40,813 INFO L93 Difference]: Finished difference Result 30421 states and 47446 transitions. [2020-10-12 19:42:40,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 19:42:40,815 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2020-10-12 19:42:40,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:40,881 INFO L225 Difference]: With dead ends: 30421 [2020-10-12 19:42:40,881 INFO L226 Difference]: Without dead ends: 27641 [2020-10-12 19:42:40,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=269, Invalid=1063, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 19:42:40,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27641 states. [2020-10-12 19:42:41,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27641 to 5003. [2020-10-12 19:42:41,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5003 states. [2020-10-12 19:42:41,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5003 states to 5003 states and 7719 transitions. [2020-10-12 19:42:41,899 INFO L78 Accepts]: Start accepts. Automaton has 5003 states and 7719 transitions. Word has length 98 [2020-10-12 19:42:41,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:41,900 INFO L479 AbstractCegarLoop]: Abstraction has 5003 states and 7719 transitions. [2020-10-12 19:42:41,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:42:41,900 INFO L276 IsEmpty]: Start isEmpty. Operand 5003 states and 7719 transitions. [2020-10-12 19:42:41,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 19:42:41,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:41,907 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] [2020-10-12 19:42:41,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:42:41,907 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:41,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:41,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1038720549, now seen corresponding path program 1 times [2020-10-12 19:42:41,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:41,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051830400] [2020-10-12 19:42:41,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:41,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:42,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:42,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:42,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:42,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:44,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:44,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:44,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:44,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:44,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:44,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:44,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:44,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:46,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:46,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 19:42:46,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:42:46,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:42:46,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:42:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:42:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 19:42:46,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:47,443 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:42:47,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:47,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:47,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:47,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:47,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:47,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:42:47,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:47,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:42:47,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:47,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:42:47,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:47,486 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 19:42:47,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051830400] [2020-10-12 19:42:47,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:47,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:42:47,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115511042] [2020-10-12 19:42:47,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:42:47,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:47,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:42:47,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:42:47,488 INFO L87 Difference]: Start difference. First operand 5003 states and 7719 transitions. Second operand 12 states. [2020-10-12 19:42:47,782 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 19:42:48,432 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-12 19:42:59,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:59,244 INFO L93 Difference]: Finished difference Result 27017 states and 42074 transitions. [2020-10-12 19:42:59,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 19:42:59,245 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-10-12 19:42:59,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:59,275 INFO L225 Difference]: With dead ends: 27017 [2020-10-12 19:42:59,276 INFO L226 Difference]: Without dead ends: 23095 [2020-10-12 19:42:59,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=380, Invalid=1600, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 19:42:59,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23095 states. [2020-10-12 19:43:00,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23095 to 5098. [2020-10-12 19:43:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5098 states. [2020-10-12 19:43:00,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5098 states to 5098 states and 7827 transitions. [2020-10-12 19:43:00,712 INFO L78 Accepts]: Start accepts. Automaton has 5098 states and 7827 transitions. Word has length 99 [2020-10-12 19:43:00,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:43:00,712 INFO L479 AbstractCegarLoop]: Abstraction has 5098 states and 7827 transitions. [2020-10-12 19:43:00,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:43:00,712 INFO L276 IsEmpty]: Start isEmpty. Operand 5098 states and 7827 transitions. [2020-10-12 19:43:00,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-12 19:43:00,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:43:00,715 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] [2020-10-12 19:43:00,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:43:00,716 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:43:00,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:43:00,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1733788940, now seen corresponding path program 1 times [2020-10-12 19:43:00,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:43:00,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999919778] [2020-10-12 19:43:00,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:43:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:00,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:00,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:00,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:00,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:01,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:01,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:03,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:03,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:03,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:03,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:03,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:03,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:03,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:03,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:05,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:05,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 19:43:05,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:43:05,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:43:05,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:43:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:43:05,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 19:43:05,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:06,325 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:43:06,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:43:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:06,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:06,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:06,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:43:06,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:43:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:43:06,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:43:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:43:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:43:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:06,392 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 19:43:06,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999919778] [2020-10-12 19:43:06,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:43:06,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:43:06,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68642621] [2020-10-12 19:43:06,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:43:06,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:43:06,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:43:06,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:43:06,394 INFO L87 Difference]: Start difference. First operand 5098 states and 7827 transitions. Second operand 12 states. [2020-10-12 19:43:06,743 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 19:43:17,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:43:17,553 INFO L93 Difference]: Finished difference Result 24611 states and 38140 transitions. [2020-10-12 19:43:17,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-12 19:43:17,554 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-10-12 19:43:17,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:43:17,584 INFO L225 Difference]: With dead ends: 24611 [2020-10-12 19:43:17,584 INFO L226 Difference]: Without dead ends: 22981 [2020-10-12 19:43:17,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=391, Invalid=1679, Unknown=0, NotChecked=0, Total=2070 [2020-10-12 19:43:17,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22981 states. [2020-10-12 19:43:18,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22981 to 5459. [2020-10-12 19:43:18,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5459 states. [2020-10-12 19:43:18,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5459 states to 5459 states and 8304 transitions. [2020-10-12 19:43:18,897 INFO L78 Accepts]: Start accepts. Automaton has 5459 states and 8304 transitions. Word has length 99 [2020-10-12 19:43:18,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:43:18,897 INFO L479 AbstractCegarLoop]: Abstraction has 5459 states and 8304 transitions. [2020-10-12 19:43:18,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:43:18,897 INFO L276 IsEmpty]: Start isEmpty. Operand 5459 states and 8304 transitions. [2020-10-12 19:43:18,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 19:43:18,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:43:18,903 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] [2020-10-12 19:43:18,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:43:18,903 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:43:18,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:43:18,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1708751078, now seen corresponding path program 1 times [2020-10-12 19:43:18,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:43:18,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157724782] [2020-10-12 19:43:18,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:43:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:18,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:18,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:19,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:19,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:19,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:19,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:19,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:19,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:20,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:20,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:20,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:21,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:22,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:22,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:22,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:22,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:23,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:23,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 19:43:23,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:43:23,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:43:23,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:43:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:43:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 19:43:23,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:24,486 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:43:24,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:43:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:24,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:24,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:24,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:43:24,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:43:24,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:43:24,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:24,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:43:24,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:43:24,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:43:24,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:24,523 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 19:43:24,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157724782] [2020-10-12 19:43:24,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:43:24,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:43:24,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836965167] [2020-10-12 19:43:24,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:43:24,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:43:24,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:43:24,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:43:24,525 INFO L87 Difference]: Start difference. First operand 5459 states and 8304 transitions. Second operand 15 states. [2020-10-12 19:43:25,124 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 182 [2020-10-12 19:43:25,874 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-12 19:43:26,038 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-12 19:43:38,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:43:38,870 INFO L93 Difference]: Finished difference Result 28108 states and 43249 transitions. [2020-10-12 19:43:38,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-12 19:43:38,871 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 100 [2020-10-12 19:43:38,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:43:38,900 INFO L225 Difference]: With dead ends: 28108 [2020-10-12 19:43:38,900 INFO L226 Difference]: Without dead ends: 26844 [2020-10-12 19:43:38,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=540, Invalid=2766, Unknown=0, NotChecked=0, Total=3306 [2020-10-12 19:43:38,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26844 states. [2020-10-12 19:43:40,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26844 to 6766. [2020-10-12 19:43:40,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6766 states. [2020-10-12 19:43:40,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6766 states to 6766 states and 10323 transitions. [2020-10-12 19:43:40,535 INFO L78 Accepts]: Start accepts. Automaton has 6766 states and 10323 transitions. Word has length 100 [2020-10-12 19:43:40,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:43:40,535 INFO L479 AbstractCegarLoop]: Abstraction has 6766 states and 10323 transitions. [2020-10-12 19:43:40,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:43:40,536 INFO L276 IsEmpty]: Start isEmpty. Operand 6766 states and 10323 transitions. [2020-10-12 19:43:40,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 19:43:40,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:43:40,541 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] [2020-10-12 19:43:40,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:43:40,542 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:43:40,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:43:40,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1263670158, now seen corresponding path program 1 times [2020-10-12 19:43:40,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:43:40,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425100278] [2020-10-12 19:43:40,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:43:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:40,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:40,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:40,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:40,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:40,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:41,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:41,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:41,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:42,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:42,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:42,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:42,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:42,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:43,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:44,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:44,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:44,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:44,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:45,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:45,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:45,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 19:43:45,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 19:43:45,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:43:45,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:43:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 19:43:45,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 19:43:45,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:46,067 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:43:46,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:43:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:46,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:46,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:46,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:43:46,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:43:46,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:43:46,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:46,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:43:46,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:43:46,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:43:46,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:46,112 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 19:43:46,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425100278] [2020-10-12 19:43:46,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:43:46,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:43:46,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777968904] [2020-10-12 19:43:46,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:43:46,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:43:46,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:43:46,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:43:46,114 INFO L87 Difference]: Start difference. First operand 6766 states and 10323 transitions. Second operand 14 states. [2020-10-12 19:43:46,625 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 169 [2020-10-12 19:44:02,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:02,148 INFO L93 Difference]: Finished difference Result 34557 states and 53179 transitions. [2020-10-12 19:44:02,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 19:44:02,149 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-10-12 19:44:02,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:02,179 INFO L225 Difference]: With dead ends: 34557 [2020-10-12 19:44:02,179 INFO L226 Difference]: Without dead ends: 30610 [2020-10-12 19:44:02,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=331, Invalid=1475, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 19:44:02,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30610 states. [2020-10-12 19:44:03,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30610 to 6772. [2020-10-12 19:44:03,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6772 states. [2020-10-12 19:44:03,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6772 states to 6772 states and 10328 transitions. [2020-10-12 19:44:03,950 INFO L78 Accepts]: Start accepts. Automaton has 6772 states and 10328 transitions. Word has length 100 [2020-10-12 19:44:03,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:03,950 INFO L479 AbstractCegarLoop]: Abstraction has 6772 states and 10328 transitions. [2020-10-12 19:44:03,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:44:03,951 INFO L276 IsEmpty]: Start isEmpty. Operand 6772 states and 10328 transitions. [2020-10-12 19:44:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-12 19:44:03,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:03,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:44:03,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:44:03,956 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:03,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:03,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1502306411, now seen corresponding path program 1 times [2020-10-12 19:44:03,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:03,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465570573] [2020-10-12 19:44:03,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:03,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:04,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:04,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:04,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:04,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:04,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:04,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:05,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:08,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:08,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:08,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:08,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:08,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 19:44:08,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:44:08,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:44:08,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:08,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:44:08,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:44:08,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 19:44:08,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:09,364 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:44:09,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:09,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:09,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:09,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:09,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:09,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:44:09,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:09,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:09,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:09,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:09,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:09,400 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 19:44:09,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465570573] [2020-10-12 19:44:09,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:09,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:44:09,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085842492] [2020-10-12 19:44:09,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:44:09,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:09,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:44:09,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:44:09,402 INFO L87 Difference]: Start difference. First operand 6772 states and 10328 transitions. Second operand 12 states. [2020-10-12 19:44:09,646 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 19:44:26,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:26,540 INFO L93 Difference]: Finished difference Result 32521 states and 50009 transitions. [2020-10-12 19:44:26,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 19:44:26,541 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2020-10-12 19:44:26,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:26,571 INFO L225 Difference]: With dead ends: 32521 [2020-10-12 19:44:26,571 INFO L226 Difference]: Without dead ends: 28389 [2020-10-12 19:44:26,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=250, Invalid=1010, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 19:44:26,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28389 states. [2020-10-12 19:44:28,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28389 to 6772. [2020-10-12 19:44:28,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6772 states. [2020-10-12 19:44:28,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6772 states to 6772 states and 10322 transitions. [2020-10-12 19:44:28,568 INFO L78 Accepts]: Start accepts. Automaton has 6772 states and 10322 transitions. Word has length 100 [2020-10-12 19:44:28,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:28,569 INFO L479 AbstractCegarLoop]: Abstraction has 6772 states and 10322 transitions. [2020-10-12 19:44:28,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:44:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 6772 states and 10322 transitions. [2020-10-12 19:44:28,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 19:44:28,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:28,572 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] [2020-10-12 19:44:28,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:44:28,573 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:28,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:28,573 INFO L82 PathProgramCache]: Analyzing trace with hash -871104846, now seen corresponding path program 1 times [2020-10-12 19:44:28,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:28,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210924415] [2020-10-12 19:44:28,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:28,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:28,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:28,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:28,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:29,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:29,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:29,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:30,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:31,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:31,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:33,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:33,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 19:44:33,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:44:33,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 19:44:33,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:44:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:44:33,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 19:44:33,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:34,169 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:44:34,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:34,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:34,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:34,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:34,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:34,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:44:34,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:34,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:34,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:34,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:34,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:34,222 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 19:44:34,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210924415] [2020-10-12 19:44:34,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:34,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:44:34,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074205849] [2020-10-12 19:44:34,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:44:34,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:34,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:44:34,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:44:34,224 INFO L87 Difference]: Start difference. First operand 6772 states and 10322 transitions. Second operand 12 states. [2020-10-12 19:44:34,514 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-12 19:44:46,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:46,471 INFO L93 Difference]: Finished difference Result 25155 states and 38656 transitions. [2020-10-12 19:44:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 19:44:46,471 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2020-10-12 19:44:46,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:46,494 INFO L225 Difference]: With dead ends: 25155 [2020-10-12 19:44:46,494 INFO L226 Difference]: Without dead ends: 21260 [2020-10-12 19:44:46,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=302, Invalid=1180, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 19:44:46,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21260 states. [2020-10-12 19:44:48,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21260 to 6772. [2020-10-12 19:44:48,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6772 states. [2020-10-12 19:44:48,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6772 states to 6772 states and 10314 transitions. [2020-10-12 19:44:48,587 INFO L78 Accepts]: Start accepts. Automaton has 6772 states and 10314 transitions. Word has length 101 [2020-10-12 19:44:48,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:48,587 INFO L479 AbstractCegarLoop]: Abstraction has 6772 states and 10314 transitions. [2020-10-12 19:44:48,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:44:48,587 INFO L276 IsEmpty]: Start isEmpty. Operand 6772 states and 10314 transitions. [2020-10-12 19:44:48,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-12 19:44:48,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:48,591 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] [2020-10-12 19:44:48,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:44:48,591 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:48,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:48,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1822809253, now seen corresponding path program 1 times [2020-10-12 19:44:48,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:48,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807372124] [2020-10-12 19:44:48,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:48,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:48,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:48,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:48,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:49,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:51,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:51,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:51,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:53,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:53,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 19:44:53,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:44:53,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:44:53,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:44:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:44:53,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 19:44:53,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:53,873 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 19:44:53,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:53,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:53,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:53,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:53,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:53,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:44:53,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:44:53,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:53,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:44:53,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:53,903 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 19:44:53,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807372124] [2020-10-12 19:44:53,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:44:53,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:44:53,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353040674] [2020-10-12 19:44:53,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:44:53,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:53,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:44:53,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:44:53,905 INFO L87 Difference]: Start difference. First operand 6772 states and 10314 transitions. Second operand 9 states. [2020-10-12 19:44:54,174 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 169