/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=BIGGEST --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/gcd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:23:28,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:23:28,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:23:28,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:23:28,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:23:28,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:23:28,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:23:28,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:23:28,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:23:28,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:23:28,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:23:28,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:23:28,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:23:28,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:23:28,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:23:28,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:23:28,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:23:28,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:23:28,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:23:28,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:23:28,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:23:28,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:23:28,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:23:28,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:23:28,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:23:28,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:23:28,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:23:28,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:23:28,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:23:28,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:23:28,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:23:28,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:23:28,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:23:28,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:23:28,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:23:28,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:23:28,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:23:28,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:23:28,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:23:28,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:23:28,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:23:28,968 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 [2020-09-24 20:23:28,994 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:23:28,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:23:28,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:23:28,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:23:28,996 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:23:28,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:23:28,997 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:23:28,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:23:28,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:23:28,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:23:28,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:23:28,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:23:28,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:23:28,998 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:23:28,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:23:28,999 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:23:28,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:23:28,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:23:28,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:23:28,999 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:23:29,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:23:29,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:23:29,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:23:29,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:23:29,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:23:29,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:23:29,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:23:29,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:23:29,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:23:29,002 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:23:29,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:23:29,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:23:29,492 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:23:29,494 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:23:29,494 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:23:29,495 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd01-1.c [2020-09-24 20:23:29,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d880993e3/c306d663ec4c455ba95ad8ae79ebdd57/FLAGf8560eb92 [2020-09-24 20:23:30,083 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:23:30,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/gcd01-1.c [2020-09-24 20:23:30,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d880993e3/c306d663ec4c455ba95ad8ae79ebdd57/FLAGf8560eb92 [2020-09-24 20:23:30,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d880993e3/c306d663ec4c455ba95ad8ae79ebdd57 [2020-09-24 20:23:30,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:23:30,444 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:23:30,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:23:30,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:23:30,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:23:30,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:23:30" (1/1) ... [2020-09-24 20:23:30,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36345b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:30, skipping insertion in model container [2020-09-24 20:23:30,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:23:30" (1/1) ... [2020-09-24 20:23:30,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:23:30,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:23:30,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:30,709 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:23:30,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:30,743 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:23:30,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:30 WrapperNode [2020-09-24 20:23:30,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:23:30,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:23:30,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:23:30,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:23:30,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:30" (1/1) ... [2020-09-24 20:23:30,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:30" (1/1) ... [2020-09-24 20:23:30,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:30" (1/1) ... [2020-09-24 20:23:30,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:30" (1/1) ... [2020-09-24 20:23:30,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:30" (1/1) ... [2020-09-24 20:23:30,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:30" (1/1) ... [2020-09-24 20:23:30,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:30" (1/1) ... [2020-09-24 20:23:30,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:23:30,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:23:30,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:23:30,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:23:30,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:30" (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 [2020-09-24 20:23:30,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:23:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:23:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-09-24 20:23:30,942 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:23:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:23:30,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:23:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-09-24 20:23:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:23:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:23:30,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:23:31,188 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:23:31,188 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:23:31,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:31 BoogieIcfgContainer [2020-09-24 20:23:31,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:23:31,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:23:31,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:23:31,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:23:31,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:23:30" (1/3) ... [2020-09-24 20:23:31,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c05ba5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:31, skipping insertion in model container [2020-09-24 20:23:31,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:30" (2/3) ... [2020-09-24 20:23:31,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c05ba5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:31, skipping insertion in model container [2020-09-24 20:23:31,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:31" (3/3) ... [2020-09-24 20:23:31,205 INFO L109 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2020-09-24 20:23:31,222 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:23:31,232 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:23:31,257 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:23:31,293 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:23:31,293 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:23:31,293 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:23:31,294 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:23:31,294 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:23:31,294 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:23:31,295 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:23:31,295 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:23:31,323 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-24 20:23:31,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 20:23:31,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:31,334 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] [2020-09-24 20:23:31,334 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:31,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:31,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1470222128, now seen corresponding path program 1 times [2020-09-24 20:23:31,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:31,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743416548] [2020-09-24 20:23:31,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:31,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:31,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:31,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:31,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:31,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:31,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-09-24 20:23:31,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 20:23:31,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 20:23:31,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:23:32,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:32,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:32,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:32,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:32,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:32,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:32,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:32,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:32,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:32,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:32,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:32,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:32,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:32,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:32,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 20:23:32,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:32,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:32,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:32,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:32,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:32,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:23:32,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743416548] [2020-09-24 20:23:32,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:32,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 20:23:32,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011671051] [2020-09-24 20:23:32,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:23:32,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:32,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:23:32,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:23:32,167 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 7 states. [2020-09-24 20:23:32,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:32,330 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2020-09-24 20:23:32,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:23:32,333 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-24 20:23:32,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:32,350 INFO L225 Difference]: With dead ends: 60 [2020-09-24 20:23:32,350 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 20:23:32,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:23:32,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 20:23:32,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 20:23:32,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 20:23:32,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-09-24 20:23:32,436 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 24 [2020-09-24 20:23:32,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:32,437 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-09-24 20:23:32,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:23:32,438 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-09-24 20:23:32,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 20:23:32,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:32,442 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] [2020-09-24 20:23:32,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:23:32,444 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:32,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:32,444 INFO L82 PathProgramCache]: Analyzing trace with hash 831268307, now seen corresponding path program 1 times [2020-09-24 20:23:32,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:32,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887715764] [2020-09-24 20:23:32,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:32,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:32,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:32,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:23:32,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:32,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-09-24 20:23:32,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:23:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 20:23:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 20:23:33,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:33,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:33,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:33,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:33,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:33,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:33,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:33,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:33,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:33,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:33,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:33,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:33,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:23:33,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:33,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 20:23:33,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:33,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:33,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:33,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:23:33,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:33,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:23:33,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887715764] [2020-09-24 20:23:33,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:33,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 20:23:33,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283897076] [2020-09-24 20:23:33,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:23:33,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:33,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:23:33,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:23:33,133 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 7 states. [2020-09-24 20:23:33,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:33,277 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2020-09-24 20:23:33,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:23:33,277 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-09-24 20:23:33,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:33,279 INFO L225 Difference]: With dead ends: 46 [2020-09-24 20:23:33,279 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 20:23:33,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:23:33,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 20:23:33,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-24 20:23:33,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 20:23:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-09-24 20:23:33,289 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 25 [2020-09-24 20:23:33,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:33,290 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-09-24 20:23:33,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:23:33,290 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-09-24 20:23:33,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 20:23:33,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:33,292 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:33,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:23:33,293 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:33,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:33,293 INFO L82 PathProgramCache]: Analyzing trace with hash -852904039, now seen corresponding path program 1 times [2020-09-24 20:23:33,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:33,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918474264] [2020-09-24 20:23:33,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:33,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:33,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 20:23:33,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:33,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-09-24 20:23:33,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:23:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 20:23:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:23:33,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:33,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:33,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:33,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:33,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:33,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:33,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:33,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:33,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:33,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:33,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:33,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:33,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:33,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:23:33,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:33,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-24 20:23:33,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:23:33,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:33,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:23:33,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:34,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:34,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:34,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:34,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:34,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 20:23:34,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:34,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:34,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:34,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:34,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:34,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:23:34,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918474264] [2020-09-24 20:23:34,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:34,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 20:23:34,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325420531] [2020-09-24 20:23:34,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:23:34,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:34,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:23:34,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:23:34,129 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 9 states. [2020-09-24 20:23:34,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:34,388 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2020-09-24 20:23:34,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:23:34,389 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-24 20:23:34,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:34,396 INFO L225 Difference]: With dead ends: 56 [2020-09-24 20:23:34,396 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 20:23:34,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:23:34,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 20:23:34,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-09-24 20:23:34,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 20:23:34,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-09-24 20:23:34,419 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 35 [2020-09-24 20:23:34,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:34,420 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-09-24 20:23:34,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:23:34,420 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-09-24 20:23:34,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 20:23:34,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:34,423 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:34,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:23:34,423 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:34,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:34,426 INFO L82 PathProgramCache]: Analyzing trace with hash 2030561919, now seen corresponding path program 1 times [2020-09-24 20:23:34,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:34,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539486377] [2020-09-24 20:23:34,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:34,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:34,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 20:23:34,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:34,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-09-24 20:23:34,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:23:34,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:23:34,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:34,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:34,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:34,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:34,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:34,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:34,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:34,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:34,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:34,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:34,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:34,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:34,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:34,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:23:34,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:34,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-24 20:23:34,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:34,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:23:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:23:34,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:34,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:34,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:34,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:34,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:34,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:34,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:23:34,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:34,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:34,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:34,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:34,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:35,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 20:23:35,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539486377] [2020-09-24 20:23:35,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:35,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 20:23:35,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757609196] [2020-09-24 20:23:35,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:23:35,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:35,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:23:35,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:23:35,003 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 9 states. [2020-09-24 20:23:35,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:35,142 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2020-09-24 20:23:35,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:23:35,143 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-24 20:23:35,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:35,145 INFO L225 Difference]: With dead ends: 58 [2020-09-24 20:23:35,145 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 20:23:35,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:23:35,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 20:23:35,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-24 20:23:35,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 20:23:35,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-09-24 20:23:35,156 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 35 [2020-09-24 20:23:35,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:35,157 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-09-24 20:23:35,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:23:35,157 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-09-24 20:23:35,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 20:23:35,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:35,159 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:35,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:23:35,160 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:35,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:35,160 INFO L82 PathProgramCache]: Analyzing trace with hash -2122258312, now seen corresponding path program 1 times [2020-09-24 20:23:35,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:35,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614296786] [2020-09-24 20:23:35,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:35,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:35,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-09-24 20:23:35,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:23:35,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:23:35,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:23:35,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:35,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:35,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:35,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:35,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:35,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:35,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:35,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:35,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:36,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:23:36,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:36,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 20:23:36,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:36,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:23:36,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:36,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:36,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:36,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:23:36,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:36,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 20:23:36,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:36,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:23:36,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 20:23:36,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614296786] [2020-09-24 20:23:36,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:36,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:23:36,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934139406] [2020-09-24 20:23:36,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:23:36,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:36,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:23:36,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:23:36,144 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 11 states. [2020-09-24 20:23:36,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:36,401 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-09-24 20:23:36,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 20:23:36,402 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-09-24 20:23:36,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:36,403 INFO L225 Difference]: With dead ends: 63 [2020-09-24 20:23:36,404 INFO L226 Difference]: Without dead ends: 57 [2020-09-24 20:23:36,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:23:36,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-24 20:23:36,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-09-24 20:23:36,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 20:23:36,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-09-24 20:23:36,414 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 36 [2020-09-24 20:23:36,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:36,415 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-09-24 20:23:36,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:23:36,415 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-09-24 20:23:36,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 20:23:36,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:36,417 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:36,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:23:36,418 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:36,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:36,418 INFO L82 PathProgramCache]: Analyzing trace with hash 404002040, now seen corresponding path program 1 times [2020-09-24 20:23:36,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:36,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795034088] [2020-09-24 20:23:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:36,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:37,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:37,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:23:37,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:37,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1545 [2020-09-24 20:23:37,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:37,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:23:37,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:23:37,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:23:37,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:38,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:38,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:38,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:38,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:38,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:38,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:38,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:38,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:38,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:38,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:38,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:38,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:23:38,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:38,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-24 20:23:38,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:38,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:38,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:38,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:23:38,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:38,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:38,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:38,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:23:38,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:38,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 20:23:38,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:38,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:38,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:38,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:23:38,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:38,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:23:38,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795034088] [2020-09-24 20:23:38,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:38,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 20:23:38,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21798823] [2020-09-24 20:23:38,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:23:38,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:38,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:23:38,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:23:38,449 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 10 states. [2020-09-24 20:23:38,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:38,730 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-09-24 20:23:38,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 20:23:38,732 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-09-24 20:23:38,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:38,733 INFO L225 Difference]: With dead ends: 66 [2020-09-24 20:23:38,734 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 20:23:38,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:23:38,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 20:23:38,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-09-24 20:23:38,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 20:23:38,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2020-09-24 20:23:38,748 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 36 [2020-09-24 20:23:38,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:38,749 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2020-09-24 20:23:38,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:23:38,749 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2020-09-24 20:23:38,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 20:23:38,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:38,754 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:38,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:23:38,754 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:38,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:38,758 INFO L82 PathProgramCache]: Analyzing trace with hash 594320754, now seen corresponding path program 1 times [2020-09-24 20:23:38,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:38,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273450129] [2020-09-24 20:23:38,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:38,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:38,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:39,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:23:39,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:39,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-24 20:23:39,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:39,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:23:39,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 20:23:39,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:23:39,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:39,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:39,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:39,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:39,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:39,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:39,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:39,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:39,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:39,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:39,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 20:23:39,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:39,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-24 20:23:39,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:39,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:23:39,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:23:39,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:23:39,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:39,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:39,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:39,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:23:39,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:39,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-24 20:23:39,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:39,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:23:39,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:39,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:23:39,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:39,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:39,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:39,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:39,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:39,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:39,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:23:39,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:39,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:39,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:39,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:39,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:39,679 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 20:23:39,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273450129] [2020-09-24 20:23:39,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:39,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 20:23:39,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008889668] [2020-09-24 20:23:39,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:23:39,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:39,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:23:39,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:23:39,682 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 10 states. [2020-09-24 20:23:39,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:39,917 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2020-09-24 20:23:39,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:23:39,917 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-24 20:23:39,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:39,919 INFO L225 Difference]: With dead ends: 76 [2020-09-24 20:23:39,919 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 20:23:39,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:23:39,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 20:23:39,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-09-24 20:23:39,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 20:23:39,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-09-24 20:23:39,933 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 46 [2020-09-24 20:23:39,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:39,934 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-09-24 20:23:39,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:23:39,934 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-09-24 20:23:39,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 20:23:39,936 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:39,936 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-09-24 20:23:39,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:23:39,937 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:39,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:39,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1010225367, now seen corresponding path program 1 times [2020-09-24 20:23:39,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:39,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601536088] [2020-09-24 20:23:39,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:39,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:40,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:44,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 20:23:44,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:23:44,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4469 [2020-09-24 20:23:44,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:44,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:23:44,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:23:44,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 20:23:44,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:44,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:44,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:44,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:44,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:44,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:44,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:44,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:44,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:44,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:44,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:44,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:44,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 20:23:44,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:44,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-09-24 20:23:44,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:23:44,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:44,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:23:44,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:44,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:44,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:44,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:23:44,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:44,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 20:23:44,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:44,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:23:44,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:44,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:23:44,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:44,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:44,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:44,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:23:44,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:44,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 20:23:44,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:44,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:23:44,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 20:23:45,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601536088] [2020-09-24 20:23:45,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:45,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:23:45,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281742012] [2020-09-24 20:23:45,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:23:45,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:45,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:23:45,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:23:45,054 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 14 states. [2020-09-24 20:23:45,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:45,465 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2020-09-24 20:23:45,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 20:23:45,466 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-09-24 20:23:45,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:45,470 INFO L225 Difference]: With dead ends: 58 [2020-09-24 20:23:45,470 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 20:23:45,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2020-09-24 20:23:45,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 20:23:45,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2020-09-24 20:23:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 20:23:45,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-09-24 20:23:45,490 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 47 [2020-09-24 20:23:45,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:45,491 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-09-24 20:23:45,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:23:45,492 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-09-24 20:23:45,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 20:23:45,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:45,493 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-09-24 20:23:45,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:23:45,494 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:45,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:45,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1848285809, now seen corresponding path program 2 times [2020-09-24 20:23:45,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:45,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271856822] [2020-09-24 20:23:45,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:45,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:46,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:48,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:48,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 20:23:48,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:23:48,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2898 [2020-09-24 20:23:48,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:48,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:23:48,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:23:48,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 20:23:48,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:48,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:48,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:48,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:48,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:48,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:48,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:48,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:48,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:48,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:48,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:48,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:48,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 20:23:48,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:48,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-24 20:23:48,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:48,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:23:48,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:48,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:23:48,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:48,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:48,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:48,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:48,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:23:48,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:48,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-24 20:23:48,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:48,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:23:48,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:48,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:23:48,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:48,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:48,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:48,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:48,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:23:48,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:48,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 20:23:48,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:48,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:48,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:23:48,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 20:23:49,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271856822] [2020-09-24 20:23:49,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:49,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 20:23:49,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907540946] [2020-09-24 20:23:49,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:23:49,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:49,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:23:49,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:23:49,072 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 14 states. [2020-09-24 20:23:49,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:49,518 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2020-09-24 20:23:49,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 20:23:49,519 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-09-24 20:23:49,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:49,521 INFO L225 Difference]: With dead ends: 58 [2020-09-24 20:23:49,521 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 20:23:49,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2020-09-24 20:23:49,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 20:23:49,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-24 20:23:49,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 20:23:49,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2020-09-24 20:23:49,539 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 47 [2020-09-24 20:23:49,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:49,540 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2020-09-24 20:23:49,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:23:49,540 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2020-09-24 20:23:49,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 20:23:49,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:49,543 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-09-24 20:23:49,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:23:49,544 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:49,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:49,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1466875377, now seen corresponding path program 2 times [2020-09-24 20:23:49,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:49,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302302784] [2020-09-24 20:23:49,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:49,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:49,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:49,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:49,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:49,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:49,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:50,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:50,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:52,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 20:23:52,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:23:52,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3112 [2020-09-24 20:23:52,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:52,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:23:52,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:23:52,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 20:23:52,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:52,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:52,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:52,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:52,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:52,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:52,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:52,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:52,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:52,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:52,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:52,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:52,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:52,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:52,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 20:23:52,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:52,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-24 20:23:52,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:23:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:52,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:23:52,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:52,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:52,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:23:53,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:53,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-24 20:23:53,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:23:53,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:53,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:23:53,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:53,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:23:53,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:53,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 20:23:53,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:23:53,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:53,294 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 20:23:53,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302302784] [2020-09-24 20:23:53,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:53,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 20:23:53,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046529002] [2020-09-24 20:23:53,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 20:23:53,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:53,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 20:23:53,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:23:53,298 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand 15 states. [2020-09-24 20:23:53,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:53,620 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-09-24 20:23:53,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 20:23:53,620 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 47 [2020-09-24 20:23:53,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:53,621 INFO L225 Difference]: With dead ends: 66 [2020-09-24 20:23:53,622 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 20:23:53,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-09-24 20:23:53,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 20:23:53,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2020-09-24 20:23:53,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 20:23:53,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-09-24 20:23:53,636 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 47 [2020-09-24 20:23:53,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:53,636 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-09-24 20:23:53,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 20:23:53,637 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-09-24 20:23:53,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 20:23:53,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:53,640 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-09-24 20:23:53,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:23:53,640 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:53,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:53,641 INFO L82 PathProgramCache]: Analyzing trace with hash 628814935, now seen corresponding path program 2 times [2020-09-24 20:23:53,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:53,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058566916] [2020-09-24 20:23:53,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:56,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:56,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 20:23:56,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:23:56,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2711 [2020-09-24 20:23:56,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 20:23:56,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:23:56,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 20:23:56,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:56,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:56,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:56,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:56,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:56,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:56,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:56,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:56,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:56,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:56,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:56,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:56,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:23:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:56,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:56,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:56,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:56,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:56,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:57,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:57,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:57,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 20:23:57,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:23:57,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1318 [2020-09-24 20:23:57,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:23:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:23:57,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:57,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:57,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:57,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:57,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:23:57,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:57,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 20:23:57,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:23:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:57,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:23:57,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:57,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:57,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:57,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:57,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:23:57,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:57,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 20:23:57,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:57,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:57,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:23:57,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:58,007 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 20:23:58,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058566916] [2020-09-24 20:23:58,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:58,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 20:23:58,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286341320] [2020-09-24 20:23:58,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:23:58,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:58,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:23:58,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:23:58,010 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 13 states. [2020-09-24 20:23:58,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:58,395 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-09-24 20:23:58,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 20:23:58,395 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-09-24 20:23:58,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:58,397 INFO L225 Difference]: With dead ends: 66 [2020-09-24 20:23:58,397 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 20:23:58,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2020-09-24 20:23:58,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 20:23:58,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2020-09-24 20:23:58,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 20:23:58,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-09-24 20:23:58,415 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 47 [2020-09-24 20:23:58,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:58,416 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-09-24 20:23:58,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:23:58,416 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-09-24 20:23:58,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 20:23:58,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:58,417 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:58,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 20:23:58,418 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:58,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:58,418 INFO L82 PathProgramCache]: Analyzing trace with hash -925145612, now seen corresponding path program 3 times [2020-09-24 20:23:58,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:58,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428622594] [2020-09-24 20:23:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:58,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:03,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 20:24:03,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:24:03,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 20:24:03,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 20:24:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:24:03,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:24:03,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:03,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:03,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:03,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:03,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:03,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:03,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:03,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:03,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:03,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:03,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 20:24:03,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:24:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:03,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:03,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 20:24:03,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:03,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-09-24 20:24:03,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:24:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 20:24:03,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:03,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:03,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:04,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:04,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 20:24:04,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:04,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-24 20:24:04,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:04,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 20:24:04,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:04,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:24:04,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:04,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:04,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:04,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:04,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:24:04,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:04,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 20:24:04,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:04,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:24:04,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:04,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:24:04,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:04,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:04,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:04,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:04,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:24:04,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:04,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 20:24:04,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:24:04,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 20:24:04,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428622594] [2020-09-24 20:24:04,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:04,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 20:24:04,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270899754] [2020-09-24 20:24:04,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 20:24:04,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:04,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 20:24:04,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:24:04,400 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 17 states. [2020-09-24 20:24:04,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:04,938 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-09-24 20:24:04,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 20:24:04,939 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-24 20:24:04,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:04,940 INFO L225 Difference]: With dead ends: 71 [2020-09-24 20:24:04,940 INFO L226 Difference]: Without dead ends: 65 [2020-09-24 20:24:04,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2020-09-24 20:24:04,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-24 20:24:04,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2020-09-24 20:24:04,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 20:24:04,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2020-09-24 20:24:04,946 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 58 [2020-09-24 20:24:04,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:04,946 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2020-09-24 20:24:04,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 20:24:04,947 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2020-09-24 20:24:04,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 20:24:04,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:04,948 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2020-09-24 20:24:04,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 20:24:04,948 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:04,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:04,948 INFO L82 PathProgramCache]: Analyzing trace with hash 304923956, now seen corresponding path program 4 times [2020-09-24 20:24:04,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:04,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022052694] [2020-09-24 20:24:04,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:04,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:09,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:09,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 20:24:09,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 20:24:09,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 20:24:09,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:09,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 20:24:09,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:24:09,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:24:09,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:09,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:09,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:09,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:09,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:09,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:09,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:09,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:09,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:09,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:09,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:09,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:09,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:24:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:10,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:10,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 20:24:10,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:10,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-24 20:24:10,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:10,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:24:10,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:10,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 20:24:10,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:10,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:10,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:10,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 20:24:10,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:10,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 20:24:10,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 20:24:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 20:24:10,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:10,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:10,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:10,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:24:10,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:10,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 20:24:10,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:24:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:10,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:24:10,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:10,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:10,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:10,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 20:24:10,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:10,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 20:24:10,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:10,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:10,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:10,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:24:10,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 20:24:10,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022052694] [2020-09-24 20:24:10,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:10,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 20:24:10,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401940725] [2020-09-24 20:24:10,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 20:24:10,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:10,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 20:24:10,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:24:10,870 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand 16 states. [2020-09-24 20:24:11,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:11,420 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-09-24 20:24:11,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 20:24:11,421 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-09-24 20:24:11,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:11,422 INFO L225 Difference]: With dead ends: 71 [2020-09-24 20:24:11,422 INFO L226 Difference]: Without dead ends: 65 [2020-09-24 20:24:11,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2020-09-24 20:24:11,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-24 20:24:11,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2020-09-24 20:24:11,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 20:24:11,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-09-24 20:24:11,427 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 58 [2020-09-24 20:24:11,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:11,428 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-09-24 20:24:11,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 20:24:11,428 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-09-24 20:24:11,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 20:24:11,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:11,429 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2020-09-24 20:24:11,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 20:24:11,429 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:11,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:11,430 INFO L82 PathProgramCache]: Analyzing trace with hash -609776486, now seen corresponding path program 5 times [2020-09-24 20:24:11,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:11,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240478247] [2020-09-24 20:24:11,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:11,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:16,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 20:24:16,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 20:24:16,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 20:24:16,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 20:24:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 20:24:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:24:16,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:16,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:16,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:16,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:16,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:16,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:16,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:16,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:16,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:16,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 20:24:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:16,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:16,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 20:24:16,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:16,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-09-24 20:24:16,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:16,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 20:24:16,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:16,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 20:24:16,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:16,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:16,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking...