/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 SingleStatement --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:34:48,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:34:48,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:34:48,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:34:48,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:34:48,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:34:48,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:34:48,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:34:48,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:34:48,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:34:48,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:34:48,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:34:48,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:34:48,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:34:48,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:34:48,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:34:48,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:34:48,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:34:48,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:34:48,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:34:48,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:34:48,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:34:48,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:34:48,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:34:48,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:34:48,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:34:48,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:34:48,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:34:48,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:34:48,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:34:48,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:34:48,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:34:48,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:34:48,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:34:48,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:34:48,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:34:48,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:34:48,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:34:48,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:34:48,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:34:48,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:34:48,991 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 [2020-09-25 06:34:49,017 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:34:49,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:34:49,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:34:49,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:34:49,019 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:34:49,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:34:49,020 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:34:49,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:34:49,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:34:49,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:34:49,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:34:49,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:34:49,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:34:49,021 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:34:49,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:34:49,022 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:34:49,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:34:49,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:34:49,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:34:49,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:34:49,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:34:49,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:34:49,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:34:49,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:34:49,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:34:49,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:34:49,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:34:49,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:34:49,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:34:49,025 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 -> SingleStatement 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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:34:49,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:34:49,535 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:34:49,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:34:49,544 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:34:49,546 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:34:49,547 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi01.c [2020-09-25 06:34:49,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/786d7f8e6/180ce5493e454576a5cbdf841ba59bdd/FLAG66a1600e0 [2020-09-25 06:34:50,192 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:34:50,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/recHanoi01.c [2020-09-25 06:34:50,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/786d7f8e6/180ce5493e454576a5cbdf841ba59bdd/FLAG66a1600e0 [2020-09-25 06:34:50,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/786d7f8e6/180ce5493e454576a5cbdf841ba59bdd [2020-09-25 06:34:50,541 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:34:50,548 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:34:50,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:34:50,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:34:50,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:34:50,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:34:50" (1/1) ... [2020-09-25 06:34:50,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:50, skipping insertion in model container [2020-09-25 06:34:50,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:34:50" (1/1) ... [2020-09-25 06:34:50,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:34:50,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:34:50,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:34:50,826 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:34:50,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:34:50,859 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:34:50,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:50 WrapperNode [2020-09-25 06:34:50,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:34:50,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:34:50,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:34:50,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:34:50,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:50" (1/1) ... [2020-09-25 06:34:50,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:50" (1/1) ... [2020-09-25 06:34:50,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:50" (1/1) ... [2020-09-25 06:34:50,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:50" (1/1) ... [2020-09-25 06:34:50,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:50" (1/1) ... [2020-09-25 06:34:50,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:50" (1/1) ... [2020-09-25 06:34:50,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:50" (1/1) ... [2020-09-25 06:34:50,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:34:50,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:34:50,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:34:50,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:34:50,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:50" (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 [2020-09-25 06:34:51,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:34:51,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:34:51,063 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-09-25 06:34:51,063 INFO L138 BoogieDeclarations]: Found implementation of procedure applyHanoi [2020-09-25 06:34:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:34:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:34:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:34:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-09-25 06:34:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure applyHanoi [2020-09-25 06:34:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:34:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:34:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:34:51,316 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:34:51,317 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 06:34:51,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:34:51 BoogieIcfgContainer [2020-09-25 06:34:51,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:34:51,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:34:51,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:34:51,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:34:51,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:34:50" (1/3) ... [2020-09-25 06:34:51,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5a060c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:34:51, skipping insertion in model container [2020-09-25 06:34:51,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:34:50" (2/3) ... [2020-09-25 06:34:51,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a5a060c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:34:51, skipping insertion in model container [2020-09-25 06:34:51,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:34:51" (3/3) ... [2020-09-25 06:34:51,333 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi01.c [2020-09-25 06:34:51,347 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:34:51,358 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:34:51,383 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:34:51,417 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:34:51,417 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:34:51,417 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:34:51,417 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:34:51,417 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:34:51,418 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:34:51,418 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:34:51,418 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:34:51,447 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 06:34:51,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 06:34:51,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:51,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:34:51,462 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:51,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:51,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1892500808, now seen corresponding path program 1 times [2020-09-25 06:34:51,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:51,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229953821] [2020-09-25 06:34:51,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:51,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:51,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:52,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:52,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 06:34:52,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:34:52,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-09-25 06:34:52,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:52,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:52,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:34:52,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:34:52,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:34:52,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:34:52,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:52,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:52,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:52,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:34:52,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:52,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:34:52,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:52,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:52,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:52,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:52,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:34:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:52,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:52,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:52,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:34:52,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:52,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 06:34:52,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:52,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:52,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:34:52,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:52,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:34:52,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:52,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 06:34:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:52,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:52,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:52,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:34:52,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:52,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:34:52,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:52,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:52,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:34:52,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:34:52,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:34:52,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:52,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:34:52,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229953821] [2020-09-25 06:34:52,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:34:52,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:34:52,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397301602] [2020-09-25 06:34:52,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:34:52,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:52,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:34:52,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:34:52,417 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 8 states. [2020-09-25 06:34:52,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:52,686 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2020-09-25 06:34:52,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 06:34:52,688 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-09-25 06:34:52,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:52,703 INFO L225 Difference]: With dead ends: 72 [2020-09-25 06:34:52,704 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 06:34:52,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:34:52,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 06:34:52,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2020-09-25 06:34:52,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 06:34:52,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-09-25 06:34:52,789 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 29 [2020-09-25 06:34:52,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:52,790 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-09-25 06:34:52,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:34:52,790 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-09-25 06:34:52,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 06:34:52,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:52,794 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 06:34:52,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:34:52,795 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:52,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:52,795 INFO L82 PathProgramCache]: Analyzing trace with hash -2098647058, now seen corresponding path program 1 times [2020-09-25 06:34:52,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:52,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579525419] [2020-09-25 06:34:52,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:52,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:52,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:53,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:53,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 06:34:53,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:34:53,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-25 06:34:53,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:53,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:53,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:34:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 06:34:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:34:53,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 06:34:53,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:53,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:53,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:53,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:34:53,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:53,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:34:53,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:53,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:53,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:53,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:53,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:53,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:53,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:34:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:53,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:53,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:53,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:34:53,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:53,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 06:34:53,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:53,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:53,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:34:53,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:34:53,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:34:53,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:53,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 06:34:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:53,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:53,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:53,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:34:53,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:53,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:34:53,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:53,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:34:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:53,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:53,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:34:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:53,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:53,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:53,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:34:53,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:53,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:34:53,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:53,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:53,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:53,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:53,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 06:34:53,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579525419] [2020-09-25 06:34:53,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:34:53,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:34:53,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716776052] [2020-09-25 06:34:53,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:34:53,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:53,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:34:53,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:34:53,336 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 6 states. [2020-09-25 06:34:53,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:53,512 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-09-25 06:34:53,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:34:53,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-09-25 06:34:53,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:53,515 INFO L225 Difference]: With dead ends: 61 [2020-09-25 06:34:53,515 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 06:34:53,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:34:53,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 06:34:53,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-09-25 06:34:53,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 06:34:53,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-09-25 06:34:53,525 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 37 [2020-09-25 06:34:53,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:53,526 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-09-25 06:34:53,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:34:53,526 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-09-25 06:34:53,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 06:34:53,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:53,528 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-09-25 06:34:53,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:34:53,529 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:53,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:53,530 INFO L82 PathProgramCache]: Analyzing trace with hash -165736076, now seen corresponding path program 1 times [2020-09-25 06:34:53,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:53,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338660994] [2020-09-25 06:34:53,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:53,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:53,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:53,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 06:34:53,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:53,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-25 06:34:53,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:53,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:53,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:34:53,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:34:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:34:53,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:53,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:53,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:53,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:53,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:34:53,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:53,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:34:53,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:53,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:53,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:53,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:53,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:53,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:53,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:34:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:53,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:54,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:54,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:34:54,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:54,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 06:34:54,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:54,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:54,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:34:54,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:34:54,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:34:54,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:54,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:34:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:54,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:54,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:54,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:34:54,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:54,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 06:34:54,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:54,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:54,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:34:54,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:34:54,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:34:54,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:54,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 06:34:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:54,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:54,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:54,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:34:54,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:54,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:34:54,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:54,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:34:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:34:54,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:34:54,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:54,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 06:34:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:54,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:54,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:54,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:34:54,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:54,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:34:54,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:54,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:54,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:34:54,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:54,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:34:54,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 06:34:54,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338660994] [2020-09-25 06:34:54,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:34:54,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:34:54,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362922725] [2020-09-25 06:34:54,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:34:54,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:54,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:34:54,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:34:54,286 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 11 states. [2020-09-25 06:34:54,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:54,713 INFO L93 Difference]: Finished difference Result 93 states and 110 transitions. [2020-09-25 06:34:54,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 06:34:54,714 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-09-25 06:34:54,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:54,717 INFO L225 Difference]: With dead ends: 93 [2020-09-25 06:34:54,718 INFO L226 Difference]: Without dead ends: 85 [2020-09-25 06:34:54,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2020-09-25 06:34:54,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-25 06:34:54,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2020-09-25 06:34:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 06:34:54,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2020-09-25 06:34:54,736 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 48 [2020-09-25 06:34:54,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:54,737 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2020-09-25 06:34:54,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:34:54,737 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2020-09-25 06:34:54,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 06:34:54,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:54,740 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:34:54,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:34:54,740 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:54,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:54,741 INFO L82 PathProgramCache]: Analyzing trace with hash 492898986, now seen corresponding path program 1 times [2020-09-25 06:34:54,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:54,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214858791] [2020-09-25 06:34:54,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:54,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:54,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:54,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:55,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:56,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:56,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 06:34:56,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:34:56,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2059 [2020-09-25 06:34:56,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:56,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:56,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:34:56,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:34:56,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:34:56,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:56,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:34:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:56,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:56,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:56,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:34:56,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:56,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:34:56,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:56,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:56,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:34:56,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:56,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:34:56,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:34:56,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:34:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:56,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:56,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:57,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:57,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:34:57,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:34:57,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-25 06:34:57,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:57,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:34:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:57,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:34:57,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:57,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:34:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:57,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:57,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:57,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:34:57,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:57,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 06:34:57,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:57,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:57,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:34:57,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:57,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:34:57,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:57,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 06:34:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:57,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:57,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:57,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:34:57,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:57,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:34:57,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:57,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:34:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:57,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:34:57,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:57,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 06:34:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:57,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:57,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:57,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:57,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:34:57,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:34:57,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 06:34:57,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:57,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:34:57,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:34:57,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:34:57,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:57,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:34:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:57,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:57,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:34:57,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:34:57,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:34:57,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:34:57,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:34:57,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:34:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:34:57,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:34:57,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:34:57,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:34:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 06:34:57,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214858791] [2020-09-25 06:34:57,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:34:57,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:34:57,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925191523] [2020-09-25 06:34:57,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:34:57,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:34:57,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:34:57,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:34:57,385 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand 10 states. [2020-09-25 06:34:57,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:34:57,623 INFO L93 Difference]: Finished difference Result 129 states and 165 transitions. [2020-09-25 06:34:57,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:34:57,624 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 56 [2020-09-25 06:34:57,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:34:57,626 INFO L225 Difference]: With dead ends: 129 [2020-09-25 06:34:57,626 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 06:34:57,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:34:57,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 06:34:57,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2020-09-25 06:34:57,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 06:34:57,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2020-09-25 06:34:57,641 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 56 [2020-09-25 06:34:57,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:34:57,641 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2020-09-25 06:34:57,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:34:57,641 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2020-09-25 06:34:57,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 06:34:57,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:34:57,643 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 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] [2020-09-25 06:34:57,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:34:57,644 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:34:57,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:34:57,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1310810726, now seen corresponding path program 2 times [2020-09-25 06:34:57,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:34:57,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037712717] [2020-09-25 06:34:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:34:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:34:57,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:57,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:57,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:57,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:58,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:34:59,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:02,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:02,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 06:35:02,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:35:02,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 06:35:02,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:02,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:35:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 06:35:02,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:02,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:02,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:02,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:02,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:35:02,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:02,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:35:02,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:02,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:02,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:02,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:02,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:02,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:02,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:35:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:02,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:02,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:02,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:03,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:03,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:03,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:04,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:04,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 06:35:04,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:35:04,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1717 [2020-09-25 06:35:04,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:04,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:04,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:35:04,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:04,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 06:35:04,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:04,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:35:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:04,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:04,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:04,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:04,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:04,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:35:04,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:35:04,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-09-25 06:35:04,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:04,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:35:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:04,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:35:04,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:04,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:35:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:04,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:04,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:04,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:35:04,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:04,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:35:04,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:04,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:35:04,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:35:04,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:04,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 06:35:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:04,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:04,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:04,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:35:04,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:04,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:35:04,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:04,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:04,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:04,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:35:04,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:04,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 06:35:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:04,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:04,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:04,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:35:04,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:04,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:35:04,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:04,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:04,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:04,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:04,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:35:04,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:05,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 06:35:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:05,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:05,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:05,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:05,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:05,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:35:05,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:05,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:05,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:05,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:35:05,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:35:05,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:05,063 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 8 proven. 43 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 06:35:05,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037712717] [2020-09-25 06:35:05,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:35:05,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:35:05,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566239717] [2020-09-25 06:35:05,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:35:05,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:05,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:35:05,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:35:05,067 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 11 states. [2020-09-25 06:35:05,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:05,430 INFO L93 Difference]: Finished difference Result 122 states and 156 transitions. [2020-09-25 06:35:05,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:35:05,431 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 06:35:05,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:05,436 INFO L225 Difference]: With dead ends: 122 [2020-09-25 06:35:05,436 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 06:35:05,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-09-25 06:35:05,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 06:35:05,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 65. [2020-09-25 06:35:05,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 06:35:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-09-25 06:35:05,456 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 67 [2020-09-25 06:35:05,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:05,456 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-09-25 06:35:05,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:35:05,460 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-09-25 06:35:05,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-25 06:35:05,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:05,461 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 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] [2020-09-25 06:35:05,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:35:05,466 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:05,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:05,466 INFO L82 PathProgramCache]: Analyzing trace with hash -646694506, now seen corresponding path program 2 times [2020-09-25 06:35:05,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:05,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873703443] [2020-09-25 06:35:05,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:05,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:06,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:06,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 06:35:06,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:06,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1225 [2020-09-25 06:35:06,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:06,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:06,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 06:35:06,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:35:06,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 06:35:06,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:06,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:06,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:06,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:06,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:35:06,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:06,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:35:06,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:06,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:06,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:06,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:06,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:06,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:06,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:35:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:06,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:07,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:07,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 06:35:07,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:07,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-09-25 06:35:07,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:07,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 06:35:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:35:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 06:35:07,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:07,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:35:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:07,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:07,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:07,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:35:07,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:07,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 06:35:07,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:07,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:07,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:35:07,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:35:07,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:35:07,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:07,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:35:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:07,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:07,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:07,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:35:07,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:07,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:35:07,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:07,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:07,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:07,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:35:07,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:35:07,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:07,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 06:35:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:07,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:07,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:07,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:35:07,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:07,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:35:07,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:07,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:07,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:07,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:35:07,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:35:07,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:07,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 06:35:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:07,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:07,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:07,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:35:07,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:07,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 06:35:07,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:07,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:07,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:35:07,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:35:07,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:35:07,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:07,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:35:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:07,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:07,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:07,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:35:07,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:07,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:35:07,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:07,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:07,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:35:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:35:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:07,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 06:35:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:07,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:07,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:07,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:35:07,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:07,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:35:07,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:07,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:07,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:35:07,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:35:07,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 06:35:07,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:07,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 06:35:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:07,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:07,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:07,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:35:07,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:07,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 06:35:07,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:07,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:07,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:35:07,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:07,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:35:07,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:08,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:35:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:08,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:08,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:08,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:08,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:08,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:35:08,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:08,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:08,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:35:08,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:08,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:35:08,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:35:08,151 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-09-25 06:35:08,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873703443] [2020-09-25 06:35:08,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:35:08,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 06:35:08,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328165025] [2020-09-25 06:35:08,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 06:35:08,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:08,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 06:35:08,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:35:08,158 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 15 states. [2020-09-25 06:35:08,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:08,778 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2020-09-25 06:35:08,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 06:35:08,778 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 94 [2020-09-25 06:35:08,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:08,784 INFO L225 Difference]: With dead ends: 102 [2020-09-25 06:35:08,784 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 06:35:08,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2020-09-25 06:35:08,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 06:35:08,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2020-09-25 06:35:08,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 06:35:08,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2020-09-25 06:35:08,815 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 94 [2020-09-25 06:35:08,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:08,816 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2020-09-25 06:35:08,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 06:35:08,816 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2020-09-25 06:35:08,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 06:35:08,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:08,822 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-09-25 06:35:08,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:35:08,822 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:08,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:08,823 INFO L82 PathProgramCache]: Analyzing trace with hash 774145474, now seen corresponding path program 3 times [2020-09-25 06:35:08,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:08,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004565977] [2020-09-25 06:35:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:08,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:08,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:09,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:09,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:09,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:09,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:10,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:13,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:13,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 06:35:13,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:35:13,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 06:35:13,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:13,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:13,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:35:13,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 06:35:13,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 06:35:13,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:35:13,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:13,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:13,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:13,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:35:13,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:13,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:35:13,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:13,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:13,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:13,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:13,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:13,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:13,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:35:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:13,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:14,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:14,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:14,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:14,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:15,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:15,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:18,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:18,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:18,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:18,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:18,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 06:35:18,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:35:18,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 06:35:18,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:18,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:18,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 06:35:18,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:35:18,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 06:35:18,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:18,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:35:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:18,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:19,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:19,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:19,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:35:19,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:35:19,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-25 06:35:19,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:19,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:19,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:35:19,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:19,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:35:19,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:19,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:35:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:19,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:19,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:19,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:35:19,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:19,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:35:19,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:19,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:19,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:19,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:19,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:35:19,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:19,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 06:35:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:19,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:19,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:19,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:35:19,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:19,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:35:19,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:19,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:19,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:35:19,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:19,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:35:19,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:19,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 06:35:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:19,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:19,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:19,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:21,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:24,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:24,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 06:35:24,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:35:24,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:35:24,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:24,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:24,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:35:24,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:35:24,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:24,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:35:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:24,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:24,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:24,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:24,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:35:24,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:35:24,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-25 06:35:24,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:24,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:35:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:24,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:35:24,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:24,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:35:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:24,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:24,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:24,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:35:24,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:24,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:35:24,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:24,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:24,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:24,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:24,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:35:24,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:24,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 06:35:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:24,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:24,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:24,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:35:24,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:24,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:35:24,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:24,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:24,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:35:24,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:24,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:35:24,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:24,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 06:35:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:24,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:24,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:24,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:35:24,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:24,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 06:35:24,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:24,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 06:35:24,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:24,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:35:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:24,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:24,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:24,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:35:24,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:24,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:35:24,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:24,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:24,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:24,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:24,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:24,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 06:35:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:24,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:24,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:24,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:35:24,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:24,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:35:24,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:24,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:24,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:24,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:24,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:24,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:24,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-09-25 06:35:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:24,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:24,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:24,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:35:24,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:24,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:35:24,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:24,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:35:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:24,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:24,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:35:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:24,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:24,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:24,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:24,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:24,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:35:24,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:24,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:24,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:24,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:24,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:24,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:24,889 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 121 proven. 159 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-09-25 06:35:24,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004565977] [2020-09-25 06:35:24,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:35:24,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:35:24,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677173742] [2020-09-25 06:35:24,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:35:24,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:24,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:35:24,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:35:24,895 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand 12 states. [2020-09-25 06:35:25,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:25,274 INFO L93 Difference]: Finished difference Result 163 states and 207 transitions. [2020-09-25 06:35:25,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 06:35:25,276 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-09-25 06:35:25,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:25,283 INFO L225 Difference]: With dead ends: 163 [2020-09-25 06:35:25,283 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 06:35:25,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2020-09-25 06:35:25,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 06:35:25,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 94. [2020-09-25 06:35:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 06:35:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-09-25 06:35:25,320 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 132 [2020-09-25 06:35:25,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:25,320 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-09-25 06:35:25,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:35:25,322 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-09-25 06:35:25,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 06:35:25,323 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:25,324 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 06:35:25,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:35:25,324 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:25,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:25,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1860925472, now seen corresponding path program 4 times [2020-09-25 06:35:25,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:25,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301754189] [2020-09-25 06:35:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:25,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:25,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:25,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:25,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:25,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:30,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:30,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 06:35:30,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:35:30,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:35:30,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:30,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:30,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:35:30,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:35:30,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 06:35:30,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:30,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:30,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:30,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:30,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:35:30,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:30,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:35:30,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:30,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:30,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:30,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:30,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:35:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:30,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:30,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:30,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:30,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:35,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:35,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 06:35:35,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:35:35,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 06:35:35,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:35,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 06:35:35,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:35,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:35:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:35,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:35,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:35,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:35:35,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:35,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 06:35:35,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:35,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:35,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:35,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:35,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 06:35:35,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:35,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:35:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:35,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:35,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:35,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:35:35,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:35,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:35:35,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:35,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:35,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:35,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:35,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:35,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:35,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 06:35:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:35,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:35,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:35,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:35:35,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:35,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:35:35,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:35,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:35,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:35,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:35,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:35,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:35,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 06:35:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:35,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:35,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:35,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:35,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:35:35,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:35:35,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 06:35:35,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:35,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:35,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:35:35,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:35,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:35:35,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:35,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 06:35:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:35,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:35,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:35,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:35:35,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:35,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:35:35,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:35,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:35,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:35:35,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:35,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:35:35,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:35,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 06:35:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:35,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:35,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:35,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:35:35,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:35,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:35:35,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:35,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:35:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:35:35,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:35:35,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 06:35:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:35,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:35,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:35,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:35:35,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:35,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 06:35:35,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:35,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:35,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 06:35:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:35:35,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 06:35:35,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:35,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:35:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:35,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:35,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:35,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 06:35:35,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:35,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 06:35:35,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:35,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:35,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:35:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 06:35:35,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:35,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 06:35:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:35,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:36,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:36,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:35:36,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:36,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:35:36,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:36,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:36,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:35:36,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:36,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:35:36,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:36,044 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 71 proven. 43 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 06:35:36,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301754189] [2020-09-25 06:35:36,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:35:36,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 06:35:36,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760784024] [2020-09-25 06:35:36,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 06:35:36,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:35:36,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 06:35:36,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-09-25 06:35:36,046 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 14 states. [2020-09-25 06:35:36,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:35:36,415 INFO L93 Difference]: Finished difference Result 114 states and 133 transitions. [2020-09-25 06:35:36,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:35:36,416 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 102 [2020-09-25 06:35:36,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:35:36,418 INFO L225 Difference]: With dead ends: 114 [2020-09-25 06:35:36,418 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 06:35:36,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-09-25 06:35:36,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 06:35:36,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2020-09-25 06:35:36,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 06:35:36,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2020-09-25 06:35:36,427 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 102 [2020-09-25 06:35:36,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:35:36,431 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2020-09-25 06:35:36,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 06:35:36,431 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2020-09-25 06:35:36,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 06:35:36,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:35:36,435 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-09-25 06:35:36,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:35:36,436 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:35:36,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:35:36,436 INFO L82 PathProgramCache]: Analyzing trace with hash 837957098, now seen corresponding path program 5 times [2020-09-25 06:35:36,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:35:36,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029255259] [2020-09-25 06:35:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:35:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:36,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:36,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:36,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:36,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:38,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:38,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:38,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:38,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:38,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:38,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:41,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:41,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 06:35:41,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:35:41,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:35:41,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:41,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:41,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:35:41,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 06:35:41,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 06:35:41,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:41,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:35:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:41,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:41,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:35:41,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:35:41,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:35:41,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:35:41,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:35:41,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:35:41,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:35:41,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:35:41,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:35:41,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:35:41,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:35:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:35:41,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:41,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:41,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:41,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:35:41,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking...