/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:55:34,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:55:34,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:55:34,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:55:34,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:55:34,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:55:34,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:55:34,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:55:34,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:55:34,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:55:34,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:55:34,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:55:34,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:55:34,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:55:34,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:55:34,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:55:34,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:55:34,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:55:34,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:55:34,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:55:34,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:55:34,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:55:34,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:55:34,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:55:34,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:55:34,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:55:34,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:55:34,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:55:34,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:55:34,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:55:34,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:55:34,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:55:34,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:55:34,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:55:34,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:55:34,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:55:34,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:55:34,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:55:34,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:55:34,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:55:34,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:55:34,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 15:55:34,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:55:34,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:55:34,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:55:34,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:55:34,988 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:55:34,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:55:34,988 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:55:34,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:55:34,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:55:34,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:55:34,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:55:34,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:55:34,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:55:34,993 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:55:34,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:55:34,993 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:55:34,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:55:34,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:55:34,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:55:34,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:55:34,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:55:34,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:55:34,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:55:34,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:55:34,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:55:34,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:55:34,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:55:34,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:55:34,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:55:34,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:55:35,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:55:35,318 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:55:35,321 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:55:35,322 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:55:35,323 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:55:35,324 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-10-13 15:55:35,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71597ded0/c8bf103c07924dbd90397b34d475eb3d/FLAG5811dd926 [2020-10-13 15:55:35,860 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:55:35,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/elimination_max_rec_onepoint.c [2020-10-13 15:55:35,868 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71597ded0/c8bf103c07924dbd90397b34d475eb3d/FLAG5811dd926 [2020-10-13 15:55:36,245 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71597ded0/c8bf103c07924dbd90397b34d475eb3d [2020-10-13 15:55:36,253 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:55:36,255 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:55:36,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:55:36,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:55:36,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:55:36,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:55:36" (1/1) ... [2020-10-13 15:55:36,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40221ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:55:36, skipping insertion in model container [2020-10-13 15:55:36,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:55:36" (1/1) ... [2020-10-13 15:55:36,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:55:36,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:55:36,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:55:36,501 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:55:36,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:55:36,538 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:55:36,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:55:36 WrapperNode [2020-10-13 15:55:36,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:55:36,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:55:36,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:55:36,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:55:36,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:55:36" (1/1) ... [2020-10-13 15:55:36,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:55:36" (1/1) ... [2020-10-13 15:55:36,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:55:36" (1/1) ... [2020-10-13 15:55:36,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:55:36" (1/1) ... [2020-10-13 15:55:36,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:55:36" (1/1) ... [2020-10-13 15:55:36,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:55:36" (1/1) ... [2020-10-13 15:55:36,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:55:36" (1/1) ... [2020-10-13 15:55:36,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:55:36,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:55:36,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:55:36,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:55:36,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:55:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:55:36,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:55:36,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:55:36,723 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 15:55:36,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 15:55:36,723 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 15:55:36,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:55:36,723 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-13 15:55:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 15:55:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 15:55:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:55:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 15:55:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 15:55:36,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 15:55:36,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 15:55:36,727 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 15:55:36,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 15:55:36,727 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:55:36,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 15:55:36,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-13 15:55:36,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 15:55:36,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:55:36,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:55:36,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 15:55:37,016 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:55:37,017 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 15:55:37,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:55:37 BoogieIcfgContainer [2020-10-13 15:55:37,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:55:37,022 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:55:37,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:55:37,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:55:37,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:55:36" (1/3) ... [2020-10-13 15:55:37,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c17b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:55:37, skipping insertion in model container [2020-10-13 15:55:37,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:55:36" (2/3) ... [2020-10-13 15:55:37,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c17b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:55:37, skipping insertion in model container [2020-10-13 15:55:37,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:55:37" (3/3) ... [2020-10-13 15:55:37,029 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec_onepoint.c [2020-10-13 15:55:37,040 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:55:37,047 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 15:55:37,062 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 15:55:37,099 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:55:37,099 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:55:37,099 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:55:37,100 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:55:37,100 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:55:37,100 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:55:37,100 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:55:37,100 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:55:37,120 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-10-13 15:55:37,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 15:55:37,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:55:37,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:55:37,127 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:55:37,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:55:37,133 INFO L82 PathProgramCache]: Analyzing trace with hash -640327596, now seen corresponding path program 1 times [2020-10-13 15:55:37,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:55:37,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29710110] [2020-10-13 15:55:37,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:55:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:37,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:37,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:37,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:37,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:37,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 15:55:37,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:55:37,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-10-13 15:55:37,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 15:55:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:37,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:55:37,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:55:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:37,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:37,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:37,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:55:37,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:37,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:55:37,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:37,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:37,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:37,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:37,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:55:37,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:55:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:37,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:37,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:37,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:37,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:37,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:55:37,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:55:37,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:37,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:37,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:37,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:37,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:55:37,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 15:55:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:37,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:37,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:37,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:37,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:37,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:55:37,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 15:55:37,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:37,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:55:37,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 15:55:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:37,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:37,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:37,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:55:37,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:37,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:55:37,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:37,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 15:55:37,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:37,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:55:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 15:55:37,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29710110] [2020-10-13 15:55:37,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:55:37,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:55:37,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772193575] [2020-10-13 15:55:37,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:55:37,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:55:37,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:55:37,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:55:37,843 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 4 states. [2020-10-13 15:55:38,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:55:38,012 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2020-10-13 15:55:38,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:55:38,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-13 15:55:38,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:55:38,025 INFO L225 Difference]: With dead ends: 83 [2020-10-13 15:55:38,025 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 15:55:38,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:55:38,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 15:55:38,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-13 15:55:38,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-13 15:55:38,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-13 15:55:38,080 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 30 [2020-10-13 15:55:38,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:55:38,080 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-13 15:55:38,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:55:38,081 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-13 15:55:38,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 15:55:38,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:55:38,084 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:55:38,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:55:38,084 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:55:38,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:55:38,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1442541232, now seen corresponding path program 1 times [2020-10-13 15:55:38,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:55:38,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025598305] [2020-10-13 15:55:38,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:55:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:38,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:38,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:38,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 15:55:38,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:38,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-13 15:55:38,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 15:55:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 15:55:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:55:38,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:38,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:55:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:38,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:38,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:38,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:55:38,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:38,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:55:38,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:38,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:38,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:38,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:55:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:38,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:38,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:38,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:38,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:38,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:55:38,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:38,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:38,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:38,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:38,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:38,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 15:55:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:38,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:38,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:38,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:38,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:38,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:55:38,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:38,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:38,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:38,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:38,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:38,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 15:55:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:38,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:38,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:38,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:55:38,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:38,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:55:38,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:38,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:38,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:38,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:38,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:38,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 15:55:38,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025598305] [2020-10-13 15:55:38,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:55:38,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 15:55:38,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467908899] [2020-10-13 15:55:38,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 15:55:38,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:55:38,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 15:55:38,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 15:55:38,448 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 8 states. [2020-10-13 15:55:38,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:55:38,811 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-10-13 15:55:38,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 15:55:38,812 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-13 15:55:38,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:55:38,814 INFO L225 Difference]: With dead ends: 46 [2020-10-13 15:55:38,814 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 15:55:38,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-13 15:55:38,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 15:55:38,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-13 15:55:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-13 15:55:38,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-10-13 15:55:38,828 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 30 [2020-10-13 15:55:38,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:55:38,830 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-10-13 15:55:38,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 15:55:38,830 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-10-13 15:55:38,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 15:55:38,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:55:38,832 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:55:38,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:55:38,833 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:55:38,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:55:38,834 INFO L82 PathProgramCache]: Analyzing trace with hash 389656800, now seen corresponding path program 1 times [2020-10-13 15:55:38,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:55:38,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431803964] [2020-10-13 15:55:38,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:55:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:38,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:38,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:39,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:39,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 15:55:39,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 15:55:39,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-10-13 15:55:39,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 15:55:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 15:55:39,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 15:55:39,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:39,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:55:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:39,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:39,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:39,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:55:39,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:39,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:55:39,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:39,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:39,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:39,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:55:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:39,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:39,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:39,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:39,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:39,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:55:39,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:39,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:39,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:39,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:39,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:55:39,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 15:55:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:39,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:39,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:39,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:39,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:39,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:55:39,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:39,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:39,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:39,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:39,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 15:55:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:39,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:39,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:39,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:55:39,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:39,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:55:39,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:39,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:55:39,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:39,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:55:39,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:39,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 15:55:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:39,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:39,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:39,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:39,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:39,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:55:39,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:39,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:55:39,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:39,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:55:39,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:55:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 15:55:39,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431803964] [2020-10-13 15:55:39,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:55:39,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 15:55:39,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620730313] [2020-10-13 15:55:39,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 15:55:39,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:55:39,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 15:55:39,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:55:39,680 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 10 states. [2020-10-13 15:55:40,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:55:40,088 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-10-13 15:55:40,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 15:55:40,088 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-10-13 15:55:40,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:55:40,090 INFO L225 Difference]: With dead ends: 50 [2020-10-13 15:55:40,090 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 15:55:40,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-10-13 15:55:40,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 15:55:40,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-13 15:55:40,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-13 15:55:40,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-13 15:55:40,099 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 33 [2020-10-13 15:55:40,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:55:40,100 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-13 15:55:40,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 15:55:40,100 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-13 15:55:40,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 15:55:40,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:55:40,102 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:55:40,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:55:40,103 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:55:40,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:55:40,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1445821128, now seen corresponding path program 1 times [2020-10-13 15:55:40,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:55:40,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207373469] [2020-10-13 15:55:40,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:55:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:40,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:40,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:40,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:41,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:44,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:44,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 15:55:44,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:55:44,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4439 [2020-10-13 15:55:44,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:44,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 15:55:44,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 15:55:44,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:55:44,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:44,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:55:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:44,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:44,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:44,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:55:44,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:44,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:55:44,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:44,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:44,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:44,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:55:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:44,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:44,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:44,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:44,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:44,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:55:44,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:44,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:44,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:44,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:44,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:55:44,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 15:55:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:44,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:44,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:44,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:44,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:44,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:55:44,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:44,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:44,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 15:55:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:44,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:44,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:44,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:55:44,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:44,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:55:44,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:55:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:44,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:55:44,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:44,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:55:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:44,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:44,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:44,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:44,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:44,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:55:44,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:55:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:44,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:55:44,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:44,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 15:55:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:44,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:44,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:44,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:44,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:44,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:55:44,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:44,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:55:44,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:55:44,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:55:44,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 15:55:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:44,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:44,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:44,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:44,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:44,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:55:44,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:44,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:44,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 15:55:44,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:44,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:44,739 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 15:55:44,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207373469] [2020-10-13 15:55:44,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:55:44,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 15:55:44,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912047832] [2020-10-13 15:55:44,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 15:55:44,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:55:44,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 15:55:44,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 15:55:44,743 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 10 states. [2020-10-13 15:55:45,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:55:45,120 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-10-13 15:55:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 15:55:45,122 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-13 15:55:45,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:55:45,123 INFO L225 Difference]: With dead ends: 68 [2020-10-13 15:55:45,123 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 15:55:45,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-10-13 15:55:45,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 15:55:45,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-13 15:55:45,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-13 15:55:45,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-10-13 15:55:45,132 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 48 [2020-10-13 15:55:45,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:55:45,133 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-10-13 15:55:45,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 15:55:45,133 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-10-13 15:55:45,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 15:55:45,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:55:45,135 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:55:45,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:55:45,135 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:55:45,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:55:45,136 INFO L82 PathProgramCache]: Analyzing trace with hash -2146885706, now seen corresponding path program 1 times [2020-10-13 15:55:45,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:55:45,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989918020] [2020-10-13 15:55:45,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:55:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:45,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:45,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:45,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:47,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:47,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 15:55:47,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 15:55:47,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2744 [2020-10-13 15:55:47,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:47,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 15:55:47,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 15:55:47,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 15:55:47,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:55:48,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:55:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:48,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:48,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:48,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:55:48,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:48,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:55:48,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:48,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:48,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:55:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:48,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:48,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:48,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:48,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:48,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:55:48,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:48,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:48,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:48,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:48,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:48,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 15:55:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:48,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:48,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:48,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:48,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:48,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:55:48,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:48,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:48,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:48,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:48,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:48,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 15:55:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:48,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:48,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:48,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:55:48,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:48,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:55:48,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:48,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:48,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:48,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:48,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:55:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:48,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:48,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:48,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:48,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:48,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:55:48,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:48,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:55:48,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:48,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:55:48,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:48,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 15:55:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:48,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:48,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:48,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:48,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:48,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:55:48,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:48,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 15:55:48,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:48,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:55:48,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:48,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 15:55:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:48,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:48,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:48,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:48,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:48,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 15:55:48,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:48,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:55:48,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:55:48,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 15:55:48,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989918020] [2020-10-13 15:55:48,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:55:48,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 15:55:48,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468170213] [2020-10-13 15:55:48,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 15:55:48,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:55:48,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 15:55:48,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-13 15:55:48,508 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 18 states. [2020-10-13 15:55:49,666 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2020-10-13 15:55:49,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:55:49,974 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-10-13 15:55:49,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 15:55:49,975 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2020-10-13 15:55:49,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:55:49,978 INFO L225 Difference]: With dead ends: 69 [2020-10-13 15:55:49,978 INFO L226 Difference]: Without dead ends: 53 [2020-10-13 15:55:49,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 15:55:49,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-13 15:55:49,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-13 15:55:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 15:55:49,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-10-13 15:55:49,988 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 48 [2020-10-13 15:55:49,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:55:49,989 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-10-13 15:55:49,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 15:55:49,993 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-10-13 15:55:49,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 15:55:49,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:55:49,996 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:55:49,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:55:49,997 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:55:49,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:55:49,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1182677245, now seen corresponding path program 2 times [2020-10-13 15:55:49,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:55:49,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955955457] [2020-10-13 15:55:49,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:55:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:50,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:50,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:50,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:51,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:55,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:55,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 15:55:55,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:55:55,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 15:55:55,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:55,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 15:55:55,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 15:55:55,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 15:55:55,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:55,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:55:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:55,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:55,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:55,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:55:55,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:55,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:55:55,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:55,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:55,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:55,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:55,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:55:55,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:55:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:55,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:55,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:55,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:55,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:55,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:55:55,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:55,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:55,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:55,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:55:55,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 15:55:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:55,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:55,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:55,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:55,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:55,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 15:55:55,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:55,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:55,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:55,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:55,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:55,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 15:55:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:55,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:55,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:55,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:55:55,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:55,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:55:55,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:55,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:55:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:55,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:55:55,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:55,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:55:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:55,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:55,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:55,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:55,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:55,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:55:55,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:55,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:55:55,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:55,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:55:55,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:55,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 15:55:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:55,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:55,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:55,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:55,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:55,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:55:55,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:55:55,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:55,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:55:55,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:55,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 15:55:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:55,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:55,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:55,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:55,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:55,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:55:55,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:55,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:55:55,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:55,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:55:55,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:55:55,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 15:55:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:55,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:55,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:55,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:55,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:55,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 15:55:55,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:55,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 15:55:55,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:55,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:55:55,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:55,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 15:55:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:55,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:55,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:55:55,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:55:55,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:55:55,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 15:55:55,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:55:55,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:55:55,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:55:55,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:55:55,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:55:55,787 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-13 15:55:55,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955955457] [2020-10-13 15:55:55,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:55:55,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 15:55:55,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515641052] [2020-10-13 15:55:55,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 15:55:55,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:55:55,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 15:55:55,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-10-13 15:55:55,790 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 21 states. [2020-10-13 15:55:57,375 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-13 15:55:57,558 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-13 15:55:58,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:55:58,267 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2020-10-13 15:55:58,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 15:55:58,267 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 63 [2020-10-13 15:55:58,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:55:58,269 INFO L225 Difference]: With dead ends: 78 [2020-10-13 15:55:58,269 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 15:55:58,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=303, Invalid=1589, Unknown=0, NotChecked=0, Total=1892 [2020-10-13 15:55:58,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 15:55:58,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2020-10-13 15:55:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 15:55:58,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2020-10-13 15:55:58,283 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 63 [2020-10-13 15:55:58,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:55:58,284 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2020-10-13 15:55:58,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 15:55:58,284 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2020-10-13 15:55:58,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 15:55:58,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:55:58,286 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:55:58,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:55:58,286 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:55:58,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:55:58,287 INFO L82 PathProgramCache]: Analyzing trace with hash 350162087, now seen corresponding path program 1 times [2020-10-13 15:55:58,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:55:58,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421221881] [2020-10-13 15:55:58,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:55:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:55:58,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:58,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:58,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:58,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:55:59,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:03,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:03,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 15:56:03,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:56:03,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 15:56:03,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 15:56:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 15:56:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 15:56:03,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:03,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:56:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:03,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:03,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:03,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:03,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:03,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:03,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:03,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:03,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:03,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:03,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:03,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:56:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:03,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:03,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:03,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:03,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:03,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:03,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:03,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:03,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 15:56:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:03,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:03,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:03,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:03,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:03,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:03,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:03,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:03,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:03,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:03,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:03,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 15:56:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:03,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:03,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:03,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:03,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:03,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:03,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:03,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:03,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:03,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:03,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:03,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:56:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:03,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:03,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:03,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:03,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:03,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:03,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:03,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:03,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:03,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:03,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:03,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 15:56:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:03,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:03,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:03,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:03,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:03,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:03,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:03,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:03,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:03,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:03,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 15:56:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:03,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:03,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:03,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 15:56:03,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:03,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 15:56:03,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:03,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 15:56:03,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:03,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 15:56:03,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:03,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 15:56:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:03,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:03,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:03,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:03,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:56:03,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:03,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:03,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:03,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 15:56:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:03,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:03,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:03,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:03,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:03,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:56:03,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:03,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:03,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 15:56:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:03,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:03,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:03,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:03,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:03,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:56:03,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:03,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:03,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:03,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:03,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:03,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 15:56:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:03,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:03,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:03,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:03,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:03,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:56:03,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:03,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 15:56:03,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:03,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:56:03,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:56:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-13 15:56:03,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421221881] [2020-10-13 15:56:03,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:56:03,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 15:56:03,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382766971] [2020-10-13 15:56:03,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 15:56:03,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:56:03,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 15:56:03,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 15:56:03,755 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand 13 states. [2020-10-13 15:56:04,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:56:04,551 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2020-10-13 15:56:04,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 15:56:04,552 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2020-10-13 15:56:04,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:56:04,554 INFO L225 Difference]: With dead ends: 77 [2020-10-13 15:56:04,554 INFO L226 Difference]: Without dead ends: 53 [2020-10-13 15:56:04,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2020-10-13 15:56:04,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-13 15:56:04,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-13 15:56:04,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 15:56:04,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-10-13 15:56:04,564 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 72 [2020-10-13 15:56:04,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:56:04,565 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-10-13 15:56:04,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 15:56:04,565 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-10-13 15:56:04,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 15:56:04,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:56:04,566 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:56:04,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:56:04,567 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:56:04,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:56:04,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1638267926, now seen corresponding path program 3 times [2020-10-13 15:56:04,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:56:04,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130511697] [2020-10-13 15:56:04,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:56:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:04,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:04,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:05,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:09,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:09,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 15:56:09,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:56:09,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 15:56:09,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:09,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 15:56:09,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 15:56:09,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 15:56:09,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:10,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:56:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:10,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:10,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:10,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:10,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:10,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:56:10,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:10,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:10,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:10,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:10,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:10,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:56:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:10,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:10,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:10,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:10,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:10,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:10,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:10,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:10,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:10,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:10,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:10,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 15:56:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:10,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:10,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:10,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:10,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:10,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:10,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:10,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:10,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 15:56:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:10,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:10,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:10,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:10,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:10,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:10,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:10,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:10,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:10,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:10,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:10,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:56:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:10,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:10,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:10,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:10,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:10,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:10,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:10,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:10,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 15:56:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:10,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:10,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:10,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:10,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:10,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:56:10,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:10,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:10,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:10,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:10,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:10,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 15:56:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:10,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:10,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:10,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:10,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:10,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:10,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:10,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:10,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:10,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:10,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:10,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 15:56:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:10,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:10,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:10,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:10,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:10,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:56:10,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:10,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 15:56:10,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:10,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:56:10,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:10,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 15:56:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:10,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:10,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:10,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:10,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:10,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:10,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:10,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:10,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:10,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:10,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 15:56:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:10,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:10,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:10,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:10,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:10,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:10,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:10,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:10,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:10,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:10,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:10,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 15:56:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:10,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:10,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:10,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:10,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:10,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 15:56:10,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:10,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:56:10,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:10,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:56:10,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 15:56:10,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130511697] [2020-10-13 15:56:10,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:56:10,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 15:56:10,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599845037] [2020-10-13 15:56:10,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 15:56:10,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:56:10,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 15:56:10,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=543, Unknown=0, NotChecked=0, Total=600 [2020-10-13 15:56:10,716 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 25 states. [2020-10-13 15:56:12,951 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-13 15:56:13,116 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-13 15:56:13,425 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-13 15:56:13,885 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-10-13 15:56:14,067 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-13 15:56:14,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:56:14,298 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-10-13 15:56:14,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 15:56:14,298 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 78 [2020-10-13 15:56:14,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:56:14,299 INFO L225 Difference]: With dead ends: 68 [2020-10-13 15:56:14,299 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 15:56:14,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=355, Invalid=2507, Unknown=0, NotChecked=0, Total=2862 [2020-10-13 15:56:14,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 15:56:14,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-13 15:56:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-13 15:56:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2020-10-13 15:56:14,314 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 78 [2020-10-13 15:56:14,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:56:14,315 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2020-10-13 15:56:14,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 15:56:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2020-10-13 15:56:14,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 15:56:14,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:56:14,317 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:56:14,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:56:14,317 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:56:14,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:56:14,317 INFO L82 PathProgramCache]: Analyzing trace with hash -574316893, now seen corresponding path program 4 times [2020-10-13 15:56:14,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:56:14,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824452971] [2020-10-13 15:56:14,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:56:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:14,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:14,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:15,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:15,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:15,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:19,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:19,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 15:56:19,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:56:19,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 15:56:19,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:19,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 15:56:19,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 15:56:19,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 15:56:19,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:20,165 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2020-10-13 15:56:20,333 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2020-10-13 15:56:20,651 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2020-10-13 15:56:20,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:56:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:20,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:20,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:20,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:20,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:20,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:20,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:20,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:20,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:20,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:20,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:20,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:56:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:20,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:20,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:20,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:20,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:20,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:56:20,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:20,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:20,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:20,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:20,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 15:56:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:20,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:20,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:20,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:20,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:20,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:20,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:20,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:20,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:20,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:20,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:20,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 15:56:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:20,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:20,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:20,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:20,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:20,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:20,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:20,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:20,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:20,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:56:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:20,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:20,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:20,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:20,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:20,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:56:20,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:20,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:20,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:20,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:20,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:20,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 15:56:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:20,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:20,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:20,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:20,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:56:20,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:20,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:20,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 15:56:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:20,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:20,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:20,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:20,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:20,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:56:20,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:20,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:20,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:20,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:20,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:20,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 15:56:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:20,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:20,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:20,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:20,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:20,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:56:20,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 15:56:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:20,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:56:20,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:21,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 15:56:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:21,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:21,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:21,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:21,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:21,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 15:56:21,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:21,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:21,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:21,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:21,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:21,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 15:56:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:21,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:21,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:21,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:21,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:21,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 15:56:21,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:21,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:21,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:21,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:21,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:21,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 15:56:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:21,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:21,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:21,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:21,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:21,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:56:21,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:21,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:21,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:21,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:21,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:21,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 15:56:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:21,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:21,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:21,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:21,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:21,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:56:21,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:21,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:21,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:21,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:21,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:21,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 15:56:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:21,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:21,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:21,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:21,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:21,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:56:21,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:21,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:56:21,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:21,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:56:21,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:21,298 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 17 proven. 56 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-13 15:56:21,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824452971] [2020-10-13 15:56:21,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:56:21,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 15:56:21,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40162409] [2020-10-13 15:56:21,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 15:56:21,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:56:21,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 15:56:21,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2020-10-13 15:56:21,301 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand 29 states. [2020-10-13 15:56:22,660 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-13 15:56:23,532 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-10-13 15:56:24,152 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 94 [2020-10-13 15:56:24,597 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 105 [2020-10-13 15:56:24,955 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 105 [2020-10-13 15:56:25,531 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-10-13 15:56:25,986 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-13 15:56:26,578 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2020-10-13 15:56:26,831 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-10-13 15:56:27,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:56:27,125 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2020-10-13 15:56:27,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 15:56:27,125 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 93 [2020-10-13 15:56:27,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:56:27,127 INFO L225 Difference]: With dead ends: 75 [2020-10-13 15:56:27,127 INFO L226 Difference]: Without dead ends: 67 [2020-10-13 15:56:27,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=468, Invalid=3438, Unknown=0, NotChecked=0, Total=3906 [2020-10-13 15:56:27,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-13 15:56:27,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-13 15:56:27,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 15:56:27,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2020-10-13 15:56:27,144 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 93 [2020-10-13 15:56:27,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:56:27,145 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2020-10-13 15:56:27,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 15:56:27,145 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2020-10-13 15:56:27,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 15:56:27,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:56:27,147 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:56:27,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:56:27,147 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:56:27,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:56:27,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1839526006, now seen corresponding path program 5 times [2020-10-13 15:56:27,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:56:27,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500344050] [2020-10-13 15:56:27,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:56:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:27,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:27,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:27,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:28,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:28,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:32,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:32,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 15:56:32,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 15:56:32,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 15:56:32,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:32,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 15:56:32,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 15:56:32,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 15:56:32,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:32,934 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-13 15:56:33,112 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-13 15:56:33,312 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-10-13 15:56:33,523 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-13 15:56:33,741 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-10-13 15:56:34,130 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-10-13 15:56:34,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:56:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:34,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:34,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:34,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:56:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:34,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:56:34,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:34,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 15:56:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:34,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:34,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:34,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:34,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 15:56:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:34,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:56:34,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:34,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:56:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:34,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:56:34,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:34,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:34,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 15:56:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:34,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:56:34,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 15:56:34,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:56:34,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 15:56:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:34,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:34,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:34,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:34,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 15:56:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:34,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:56:34,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:34,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 15:56:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:34,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:34,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:34,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:34,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 15:56:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:34,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:56:34,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:34,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 15:56:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:34,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:56:34,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:34,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 15:56:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:34,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 15:56:34,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:34,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 15:56:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:34,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:34,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:34,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 15:56:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:34,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:34,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:34,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 15:56:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:34,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:34,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:34,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:34,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:34,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:56:34,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:56:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:34,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:56:34,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 16 proven. 92 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-10-13 15:56:34,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500344050] [2020-10-13 15:56:34,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:56:34,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 15:56:34,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094039579] [2020-10-13 15:56:34,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 15:56:34,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:56:34,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 15:56:34,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=835, Unknown=0, NotChecked=0, Total=930 [2020-10-13 15:56:34,755 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand 31 states. [2020-10-13 15:56:36,718 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-10-13 15:56:36,905 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-13 15:56:37,183 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-13 15:56:37,372 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-10-13 15:56:37,701 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2020-10-13 15:56:37,927 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-10-13 15:56:38,270 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-10-13 15:56:38,532 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88 [2020-10-13 15:56:38,914 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 94 [2020-10-13 15:56:39,296 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-10-13 15:56:39,669 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-13 15:56:39,991 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2020-10-13 15:56:40,198 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-13 15:56:40,551 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-13 15:56:40,755 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-13 15:56:41,339 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 93 [2020-10-13 15:56:41,683 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-10-13 15:56:41,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:56:41,980 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2020-10-13 15:56:41,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-13 15:56:41,981 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 108 [2020-10-13 15:56:41,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:56:41,983 INFO L225 Difference]: With dead ends: 82 [2020-10-13 15:56:41,983 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 15:56:41,985 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=637, Invalid=3919, Unknown=0, NotChecked=0, Total=4556 [2020-10-13 15:56:41,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 15:56:41,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-13 15:56:41,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-13 15:56:42,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2020-10-13 15:56:42,000 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 108 [2020-10-13 15:56:42,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:56:42,001 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2020-10-13 15:56:42,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 15:56:42,001 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2020-10-13 15:56:42,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 15:56:42,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:56:42,003 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:56:42,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:56:42,004 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:56:42,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:56:42,004 INFO L82 PathProgramCache]: Analyzing trace with hash 875716163, now seen corresponding path program 6 times [2020-10-13 15:56:42,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:56:42,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266844856] [2020-10-13 15:56:42,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:56:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:42,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:42,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:43,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:43,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:44,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:46,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:47,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:47,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-13 15:56:47,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 15:56:47,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 15:56:47,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:47,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-13 15:56:47,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 15:56:47,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 15:56:47,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:47,741 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-10-13 15:56:48,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:56:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:48,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:48,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:48,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:48,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:48,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:48,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:48,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:48,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:48,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:48,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:48,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 15:56:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:48,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:48,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:48,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:48,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:48,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:56:48,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:48,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:48,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:48,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:48,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:48,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 15:56:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:48,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:48,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:48,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:48,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 15:56:48,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:48,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 15:56:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:48,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:48,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:48,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:56:48,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:48,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:48,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:56:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:48,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:56:48,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:48,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 15:56:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:48,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:48,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:48,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:48,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:48,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:48,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:48,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:48,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 15:56:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:48,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:48,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:48,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:48,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:48,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 15:56:48,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:48,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:48,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:48,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:48,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:48,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 15:56:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:48,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:48,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:48,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:48,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:48,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:48,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:48,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:48,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:48,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:48,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:48,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 15:56:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:48,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:48,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:48,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:48,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:48,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:56:48,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:48,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:48,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:48,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:48,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:48,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 15:56:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:48,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:48,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:48,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:48,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:48,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:56:48,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:48,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:48,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:48,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:48,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:48,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 15:56:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:48,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:48,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:48,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:48,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:48,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 15:56:48,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:48,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:48,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:48,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 15:56:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:48,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:48,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:48,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:48,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:48,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:48,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:48,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:48,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:48,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:48,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:48,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 15:56:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:48,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:48,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:48,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:48,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:48,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 15:56:48,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 15:56:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:56:48,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:49,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 15:56:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:49,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:49,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:49,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:49,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:49,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 15:56:49,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:49,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:49,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:49,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 15:56:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:49,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:49,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:49,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:49,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:49,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:49,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:49,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:49,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:49,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:49,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:49,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 15:56:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:49,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:49,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:49,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:49,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:49,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:49,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:49,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:49,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:49,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:49,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 15:56:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:49,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:49,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:49,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:49,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:49,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 15:56:49,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:49,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:56:49,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:49,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 15:56:49,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:49,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 15:56:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:56:49,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:56:49,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:56:49,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 15:56:49,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:56:49,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:56:49,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:56:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 15:56:49,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:56:49,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 15:56:49,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:56:49,323 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 27 proven. 121 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-13 15:56:49,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266844856] [2020-10-13 15:56:49,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 15:56:49,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 15:56:49,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154343506] [2020-10-13 15:56:49,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 15:56:49,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:56:49,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 15:56:49,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2020-10-13 15:56:49,325 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand 32 states. [2020-10-13 15:56:50,545 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-13 15:56:50,971 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-13 15:56:51,218 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-10-13 15:56:51,600 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2020-10-13 15:56:51,852 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-10-13 15:56:52,268 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2020-10-13 15:56:52,582 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-10-13 15:56:53,029 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2020-10-13 15:56:53,406 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2020-10-13 15:56:53,856 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 105 [2020-10-13 15:56:54,199 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2020-10-13 15:56:54,707 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 115 [2020-10-13 15:56:54,968 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-10-13 15:56:55,560 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-10-13 15:56:56,073 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-10-13 15:56:56,251 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-13 15:56:56,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:56:56,370 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2020-10-13 15:56:56,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-13 15:56:56,371 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 123 [2020-10-13 15:56:56,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:56:56,372 INFO L225 Difference]: With dead ends: 74 [2020-10-13 15:56:56,372 INFO L226 Difference]: Without dead ends: 0 [2020-10-13 15:56:56,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=681, Invalid=3609, Unknown=0, NotChecked=0, Total=4290 [2020-10-13 15:56:56,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-13 15:56:56,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-13 15:56:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-13 15:56:56,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-13 15:56:56,375 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 123 [2020-10-13 15:56:56,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:56:56,375 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-13 15:56:56,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 15:56:56,376 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-13 15:56:56,376 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-13 15:56:56,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:56:56,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-13 15:56:58,013 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 360 DAG size of output: 59 [2020-10-13 15:56:59,004 WARN L193 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 360 DAG size of output: 59 [2020-10-13 15:56:59,332 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 245 DAG size of output: 1 [2020-10-13 15:57:00,837 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 386 DAG size of output: 84 [2020-10-13 15:57:01,594 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 268 DAG size of output: 74 [2020-10-13 15:57:01,599 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-13 15:57:01,600 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-13 15:57:01,600 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-13 15:57:01,600 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-13 15:57:01,600 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-13 15:57:01,600 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-13 15:57:01,600 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-13 15:57:01,601 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2020-10-13 15:57:01,601 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-10-13 15:57:01,601 INFO L268 CegarLoopResult]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2020-10-13 15:57:01,601 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-10-13 15:57:01,603 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 38 52) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-10-13 15:57:01,603 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 38 52) no Hoare annotation was computed. [2020-10-13 15:57:01,603 INFO L264 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= main_~ax~1 0) (= main_~ai~1 0) (= (select |#memory_int| |main_#t~malloc10.base|) .cse0))) [2020-10-13 15:57:01,603 INFO L268 CegarLoopResult]: For program point L48-1(line 48) no Hoare annotation was computed. [2020-10-13 15:57:01,603 INFO L264 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= (select |#memory_int| |main_#t~malloc10.base|) .cse0))) [2020-10-13 15:57:01,603 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 38 52) no Hoare annotation was computed. [2020-10-13 15:57:01,603 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-13 15:57:01,604 INFO L268 CegarLoopResult]: For program point L45-1(line 45) no Hoare annotation was computed. [2020-10-13 15:57:01,604 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-10-13 15:57:01,604 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-10-13 15:57:01,604 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-10-13 15:57:01,604 INFO L264 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-10-13 15:57:01,604 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-10-13 15:57:01,604 INFO L264 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (let ((.cse1 (select |#memory_int| |check_#in~a.base|)) (.cse11 ((as const (Array Int Int)) 0)) (.cse13 (+ |check_#in~y| 1))) (let ((.cse2 (< check_~y check_~n)) (.cse5 (<= 0 check_~x)) (.cse0 (not (<= .cse13 |check_#in~n|))) (.cse6 (not (<= 0 |check_#in~x|))) (.cse7 (not (= .cse1 .cse11))) (.cse12 (not (<= |check_#in~n| .cse13))) (.cse9 (<= check_~x check_~y)) (.cse10 (<= check_~i check_~y)) (.cse8 (not (<= |check_#in~i| |check_#in~y|)))) (and (or .cse0 (let ((.cse4 (+ (* 4 check_~i) check_~a.offset)) (.cse3 (+ |check_#in~a.offset| (* 4 |check_#in~i|)))) (and (= check_~ax~0 (select .cse1 (+ |check_#in~a.offset| (* check_~x1~0 4)))) .cse2 (<= .cse3 .cse4) (<= .cse4 .cse3) (<= check_~a.offset |check_#in~a.offset|) .cse5 (= (select .cse1 (+ |check_#in~a.offset| (* |check_#in~i| 4))) check_~ai~0) (<= |check_#in~a.offset| check_~a.offset) (= check_~a.base |check_#in~a.base|))) .cse6 .cse7 .cse8) (or .cse0 (and .cse9 (or (and (<= check_~x 1) (< 0 check_~i) .cse10) (= check_~i 0)) .cse2 (<= check_~ai~0 check_~ax~0) .cse5 (= (select |#memory_int| check_~a.base) .cse11)) (not (= |check_#in~x| 0)) .cse7 .cse12) (or .cse0 .cse6 .cse7 (not (<= 0 |check_#in~i|)) (not (<= |check_#in~x| 1)) .cse12 (and .cse9 .cse10) .cse8)))) [2020-10-13 15:57:01,605 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-10-13 15:57:01,605 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 14 36) the Hoare annotation is: true [2020-10-13 15:57:01,605 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-10-13 15:57:01,605 INFO L268 CegarLoopResult]: For program point L24(lines 24 25) no Hoare annotation was computed. [2020-10-13 15:57:01,605 INFO L264 CegarLoopResult]: At program point L24-2(lines 24 25) the Hoare annotation is: (let ((.cse16 (* 4 |check_#in~i|))) (let ((.cse18 (+ |check_#in~y| 1)) (.cse20 (+ |check_#in~a.offset| .cse16)) (.cse19 (+ (* 4 check_~i) check_~a.offset))) (let ((.cse1 (<= check_~x check_~y)) (.cse2 (< check_~y check_~n)) (.cse3 (<= .cse20 .cse19)) (.cse4 (<= .cse19 .cse20)) (.cse17 (<= check_~n (+ check_~y 1))) (.cse6 (<= 0 check_~x)) (.cse5 (<= check_~a.offset |check_#in~a.offset|)) (.cse7 (<= |check_#in~a.offset| check_~a.offset)) (.cse8 (<= check_~i check_~y)) (.cse9 (= check_~a.base |check_#in~a.base|)) (.cse0 (not (<= .cse18 |check_#in~n|))) (.cse10 (not (<= 0 |check_#in~x|))) (.cse11 (not (= (select |#memory_int| |check_#in~a.base|) ((as const (Array Int Int)) 0)))) (.cse13 (not (<= 0 |check_#in~i|))) (.cse14 (not (<= |check_#in~n| .cse18))) (.cse12 (not (<= |check_#in~i| |check_#in~y|)))) (and (or .cse0 (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) .cse10 .cse11 .cse12) (or .cse0 .cse10 .cse11 .cse13 (not (<= |check_#in~x| 1)) .cse14 (<= (* 4 check_~x) 8) .cse12) (let ((.cse15 (* 4 |check_#in~x|))) (or (and (not (= (* |check_#in~i| 4) 0)) (not (<= .cse15 (+ .cse16 4)))) (not (<= .cse15 8)) .cse0 .cse10 .cse11 (and (<= check_~x 3) .cse17) .cse14 .cse12)) (or .cse0 (and .cse1 (<= check_~x 1) .cse2 .cse3 .cse4 .cse17 .cse6 .cse5 .cse7 .cse8 .cse9 (or (< 0 check_~i) (= check_~i 0))) (not (= |check_#in~x| 0)) .cse11 .cse14) (or .cse0 .cse10 .cse11 (<= (div (+ (* check_~x 4) (- 9)) 4) 1) .cse13 .cse14 .cse12 (not (<= |check_#in~x| 3))))))) [2020-10-13 15:57:01,610 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-13 15:57:01,611 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 14 36) no Hoare annotation was computed. [2020-10-13 15:57:01,611 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse14 (+ |check_#in~y| 1)) (.cse16 (+ |check_#in~a.offset| (* 4 |check_#in~i|))) (.cse15 (+ (* 4 check_~i) check_~a.offset))) (let ((.cse1 (= |check_#in~y| check_~y)) (.cse2 (< check_~y check_~n)) (.cse3 (<= .cse16 .cse15)) (.cse4 (<= .cse15 .cse16)) (.cse5 (<= check_~a.offset |check_#in~a.offset|)) (.cse6 (<= |check_#in~a.offset| check_~a.offset)) (.cse7 (<= (+ check_~x 1) check_~y)) (.cse8 (= check_~a.base |check_#in~a.base|)) (.cse0 (not (<= .cse14 |check_#in~n|))) (.cse12 (<= check_~n (+ check_~y 1))) (.cse9 (not (<= 0 |check_#in~x|))) (.cse10 (not (= (select |#memory_int| |check_#in~a.base|) ((as const (Array Int Int)) 0)))) (.cse13 (not (<= |check_#in~n| .cse14))) (.cse11 (not (<= |check_#in~i| |check_#in~y|)))) (and (or .cse0 (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= |check_#in~x| check_~x) .cse7 .cse8) .cse9 .cse10 .cse11) (or .cse0 (not (= |check_#in~x| 0)) .cse10 (and .cse1 .cse2 .cse3 .cse4 .cse12 .cse5 .cse6 .cse7 .cse8 (= check_~x 0)) .cse13) (or .cse0 .cse12 .cse9 .cse10 (not (<= 0 |check_#in~i|)) .cse13 .cse11 (not (<= |check_#in~x| 3)))))) [2020-10-13 15:57:01,611 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (let ((.cse14 (+ |check_#in~y| 1)) (.cse16 (+ |check_#in~a.offset| (* 4 |check_#in~i|))) (.cse15 (+ (* 4 check_~i) check_~a.offset))) (let ((.cse1 (= |check_#in~y| check_~y)) (.cse2 (< check_~y check_~n)) (.cse3 (<= .cse16 .cse15)) (.cse4 (<= .cse15 .cse16)) (.cse5 (<= check_~a.offset |check_#in~a.offset|)) (.cse6 (<= |check_#in~a.offset| check_~a.offset)) (.cse7 (<= (+ check_~x 1) check_~y)) (.cse8 (= check_~a.base |check_#in~a.base|)) (.cse0 (not (<= .cse14 |check_#in~n|))) (.cse12 (<= check_~n (+ check_~y 1))) (.cse9 (not (<= 0 |check_#in~x|))) (.cse10 (not (= (select |#memory_int| |check_#in~a.base|) ((as const (Array Int Int)) 0)))) (.cse13 (not (<= |check_#in~n| .cse14))) (.cse11 (not (<= |check_#in~i| |check_#in~y|)))) (and (or .cse0 (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= |check_#in~x| check_~x) .cse7 .cse8) .cse9 .cse10 .cse11) (or .cse0 (not (= |check_#in~x| 0)) .cse10 (and .cse1 .cse2 .cse3 .cse4 .cse12 .cse5 .cse6 .cse7 .cse8 (= check_~x 0)) .cse13) (or .cse0 .cse12 .cse9 .cse10 (not (<= 0 |check_#in~i|)) .cse13 .cse11 (not (<= |check_#in~x| 3)))))) [2020-10-13 15:57:01,612 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-13 15:57:01,612 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 14 36) no Hoare annotation was computed. [2020-10-13 15:57:01,612 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 10) the Hoare annotation is: true [2020-10-13 15:57:01,612 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 10) no Hoare annotation was computed. [2020-10-13 15:57:01,612 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-10-13 15:57:01,612 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-10-13 15:57:01,612 INFO L268 CegarLoopResult]: For program point L9-3(lines 8 10) no Hoare annotation was computed. [2020-10-13 15:57:01,612 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-10-13 15:57:01,613 INFO L264 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-13 15:57:01,613 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-10-13 15:57:01,613 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-10-13 15:57:01,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 03:57:01 BoogieIcfgContainer [2020-10-13 15:57:01,619 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 15:57:01,621 INFO L168 Benchmark]: Toolchain (without parser) took 85366.14 ms. Allocated memory was 145.8 MB in the beginning and 841.5 MB in the end (delta: 695.7 MB). Free memory was 101.8 MB in the beginning and 114.3 MB in the end (delta: -12.6 MB). Peak memory consumption was 683.2 MB. Max. memory is 7.1 GB. [2020-10-13 15:57:01,621 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-13 15:57:01,622 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.53 ms. Allocated memory is still 145.8 MB. Free memory was 101.6 MB in the beginning and 91.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-10-13 15:57:01,623 INFO L168 Benchmark]: Boogie Preprocessor took 121.47 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 91.0 MB in the beginning and 179.1 MB in the end (delta: -88.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-10-13 15:57:01,623 INFO L168 Benchmark]: RCFGBuilder took 359.58 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 159.7 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-10-13 15:57:01,624 INFO L168 Benchmark]: TraceAbstraction took 84596.72 ms. Allocated memory was 201.9 MB in the beginning and 841.5 MB in the end (delta: 639.6 MB). Free memory was 159.0 MB in the beginning and 114.3 MB in the end (delta: 44.7 MB). Peak memory consumption was 684.3 MB. Max. memory is 7.1 GB. [2020-10-13 15:57:01,627 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 282.53 ms. Allocated memory is still 145.8 MB. Free memory was 101.6 MB in the beginning and 91.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.47 ms. Allocated memory was 145.8 MB in the beginning and 201.9 MB in the end (delta: 56.1 MB). Free memory was 91.0 MB in the beginning and 179.1 MB in the end (delta: -88.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 359.58 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 159.7 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 84596.72 ms. Allocated memory was 201.9 MB in the beginning and 841.5 MB in the end (delta: 639.6 MB). Free memory was 159.0 MB in the beginning and 114.3 MB in the end (delta: 44.7 MB). Peak memory consumption was 684.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 79.2s, OverallIterations: 11, TraceHistogramMax: 8, AutomataDifference: 29.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 329 SDtfs, 910 SDslu, 1169 SDs, 0 SdLazy, 6118 SolverSat, 1017 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 601 GetRequests, 212 SyntacticMatches, 7 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3932 ImplicationChecksByTransitivity, 29.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 93 PreInvPairs, 125 NumberOfFragments, 923 HoareAnnotationTreeSize, 93 FomulaSimplifications, 2159 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 17 FomulaSimplificationsInter, 14263 FormulaSimplificationTreeSizeReductionInter, 4.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 48.6s InterpolantComputationTime, 726 NumberOfCodeBlocks, 726 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 715 ConstructedInterpolants, 0 QuantifiedInterpolants, 768948 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 568/886 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...