/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=NARROWEST --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/Fibonacci02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:00:29,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:00:29,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:00:30,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:00:30,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:00:30,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:00:30,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:00:30,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:00:30,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:00:30,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:00:30,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:00:30,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:00:30,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:00:30,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:00:30,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:00:30,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:00:30,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:00:30,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:00:30,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:00:30,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:00:30,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:00:30,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:00:30,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:00:30,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:00:30,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:00:30,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:00:30,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:00:30,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:00:30,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:00:30,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:00:30,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:00:30,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:00:30,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:00:30,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:00:30,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:00:30,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:00:30,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:00:30,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:00:30,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:00:30,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:00:30,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:00:30,083 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:00:30,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:00:30,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:00:30,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:00:30,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:00:30,142 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:00:30,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:00:30,143 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:00:30,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:00:30,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:00:30,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:00:30,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:00:30,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:00:30,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:00:30,144 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:00:30,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:00:30,145 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:00:30,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:00:30,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:00:30,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:00:30,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:00:30,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:00:30,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:00:30,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:00:30,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:00:30,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:00:30,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:00:30,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:00:30,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:00:30,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:00:30,148 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:00:30,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:00:30,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:00:30,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:00:30,678 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:00:30,678 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:00:30,679 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci02.c [2020-09-25 02:00:30,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd0901a2a/0ef3fe9c36a2493c94333d23c30d6c4b/FLAG86e7292d4 [2020-09-25 02:00:31,339 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:00:31,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci02.c [2020-09-25 02:00:31,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd0901a2a/0ef3fe9c36a2493c94333d23c30d6c4b/FLAG86e7292d4 [2020-09-25 02:00:31,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd0901a2a/0ef3fe9c36a2493c94333d23c30d6c4b [2020-09-25 02:00:31,715 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:00:31,721 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:00:31,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:00:31,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:00:31,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:00:31,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:00:31" (1/1) ... [2020-09-25 02:00:31,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@756d08d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:31, skipping insertion in model container [2020-09-25 02:00:31,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:00:31" (1/1) ... [2020-09-25 02:00:31,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:00:31,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:00:32,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:00:32,082 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:00:32,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:00:32,117 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:00:32,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:32 WrapperNode [2020-09-25 02:00:32,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:00:32,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:00:32,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:00:32,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:00:32,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:32" (1/1) ... [2020-09-25 02:00:32,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:32" (1/1) ... [2020-09-25 02:00:32,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:32" (1/1) ... [2020-09-25 02:00:32,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:32" (1/1) ... [2020-09-25 02:00:32,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:32" (1/1) ... [2020-09-25 02:00:32,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:32" (1/1) ... [2020-09-25 02:00:32,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:32" (1/1) ... [2020-09-25 02:00:32,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:00:32,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:00:32,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:00:32,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:00:32,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:00:32,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:00:32,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:00:32,343 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 02:00:32,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:00:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:00:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:00:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 02:00:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:00:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:00:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:00:32,617 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:00:32,617 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:00:32,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:00:32 BoogieIcfgContainer [2020-09-25 02:00:32,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:00:32,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:00:32,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:00:32,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:00:32,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:00:31" (1/3) ... [2020-09-25 02:00:32,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716f3682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:00:32, skipping insertion in model container [2020-09-25 02:00:32,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:00:32" (2/3) ... [2020-09-25 02:00:32,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716f3682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:00:32, skipping insertion in model container [2020-09-25 02:00:32,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:00:32" (3/3) ... [2020-09-25 02:00:32,656 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci02.c [2020-09-25 02:00:32,683 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:00:32,695 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:00:32,727 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:00:32,758 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:00:32,758 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:00:32,758 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:00:32,759 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:00:32,759 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:00:32,759 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:00:32,759 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:00:32,759 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:00:32,783 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 02:00:32,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 02:00:32,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:32,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:32,794 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:32,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:32,800 INFO L82 PathProgramCache]: Analyzing trace with hash 2085313281, now seen corresponding path program 1 times [2020-09-25 02:00:32,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:32,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750469726] [2020-09-25 02:00:32,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:32,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:32,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:32,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:00:32,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:32,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 02:00:32,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:32,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:32,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:00:32,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:00:32,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:00:33,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:33,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:33,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:33,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:33,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:33,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:33,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:33,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:33,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:33,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:33,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:33,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:00:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:33,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:33,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:33,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:33,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:33,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:00:33,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:33,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:33,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:33,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:00:33,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:00:33,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750469726] [2020-09-25 02:00:33,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:00:33,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:00:33,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454117915] [2020-09-25 02:00:33,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:00:33,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:33,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:00:33,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:00:33,204 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 02:00:33,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:33,318 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 02:00:33,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:00:33,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 02:00:33,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:33,334 INFO L225 Difference]: With dead ends: 44 [2020-09-25 02:00:33,334 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 02:00:33,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:00:33,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 02:00:33,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 02:00:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:00:33,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:00:33,392 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 02:00:33,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:33,393 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:00:33,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:00:33,393 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:00:33,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 02:00:33,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:33,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:33,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:00:33,397 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:33,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:33,397 INFO L82 PathProgramCache]: Analyzing trace with hash -93144392, now seen corresponding path program 1 times [2020-09-25 02:00:33,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:33,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164251034] [2020-09-25 02:00:33,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:33,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:33,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:33,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:33,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 02:00:33,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:33,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 02:00:33,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:33,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:33,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:00:33,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:00:33,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:33,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:33,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:33,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:33,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:33,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:33,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:33,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:33,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:33,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:33,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:33,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:33,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:00:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:33,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:33,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:33,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:33,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:33,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 02:00:33,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:33,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:33,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:33,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:33,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:33,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:00:33,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164251034] [2020-09-25 02:00:33,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:00:33,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:00:33,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589237200] [2020-09-25 02:00:33,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:00:33,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:33,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:00:33,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:00:33,703 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 02:00:33,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:33,776 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 02:00:33,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:00:33,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 02:00:33,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:33,779 INFO L225 Difference]: With dead ends: 36 [2020-09-25 02:00:33,779 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:00:33,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:00:33,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:00:33,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 02:00:33,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:00:33,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:00:33,789 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 02:00:33,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:33,789 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:00:33,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:00:33,790 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:00:33,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 02:00:33,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:33,792 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 02:00:33,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:00:33,792 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:33,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:33,793 INFO L82 PathProgramCache]: Analyzing trace with hash 37359445, now seen corresponding path program 1 times [2020-09-25 02:00:33,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:33,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011341193] [2020-09-25 02:00:33,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:33,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:33,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:33,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:34,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:34,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 02:00:34,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:34,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-09-25 02:00:34,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:34,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:34,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:00:34,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:00:34,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:34,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:34,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:34,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:34,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:34,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:34,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:34,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:34,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:34,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:34,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:34,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:34,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:00:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:34,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:34,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:34,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 02:00:34,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:34,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 02:00:34,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:34,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:34,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:00:34,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:00:34,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:34,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:34,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:34,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:34,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:34,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:34,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:00:34,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:34,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:34,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:34,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:00:34,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:34,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:00:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:34,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:34,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:34,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:34,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:34,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:00:34,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:00:34,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:34,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:00:34,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011341193] [2020-09-25 02:00:34,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:34,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:00:34,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604281739] [2020-09-25 02:00:34,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:00:34,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:34,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:00:34,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:00:34,505 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 02:00:34,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:34,602 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-25 02:00:34,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:00:34,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 02:00:34,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:34,604 INFO L225 Difference]: With dead ends: 52 [2020-09-25 02:00:34,604 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:00:34,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:00:34,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:00:34,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 02:00:34,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 02:00:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 02:00:34,614 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-25 02:00:34,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:34,615 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 02:00:34,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:00:34,615 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 02:00:34,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 02:00:34,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:34,617 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 02:00:34,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:00:34,618 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:34,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:34,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1599890626, now seen corresponding path program 1 times [2020-09-25 02:00:34,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:34,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416846149] [2020-09-25 02:00:34,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:34,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:34,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:35,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:00:35,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:35,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-09-25 02:00:35,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:35,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:35,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:00:35,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:00:35,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:35,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:35,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:35,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:35,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:35,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:35,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:35,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:35,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:35,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:35,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:35,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:00:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:35,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:35,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:00:35,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:35,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-09-25 02:00:35,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:35,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:35,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:35,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:00:35,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:35,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:35,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:35,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:35,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:35,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:00:35,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:35,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:00:35,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:35,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:35,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:35,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:00:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:35,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:35,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:35,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:35,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:00:35,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:35,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 02:00:35,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416846149] [2020-09-25 02:00:35,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:35,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:00:35,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280017253] [2020-09-25 02:00:35,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:00:35,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:35,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:00:35,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:00:35,482 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-25 02:00:35,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:35,571 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-09-25 02:00:35,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:00:35,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 02:00:35,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:35,573 INFO L225 Difference]: With dead ends: 42 [2020-09-25 02:00:35,574 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 02:00:35,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:00:35,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 02:00:35,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-25 02:00:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 02:00:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 02:00:35,583 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 34 [2020-09-25 02:00:35,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:35,583 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 02:00:35,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:00:35,584 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 02:00:35,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:00:35,585 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:35,585 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] [2020-09-25 02:00:35,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:00:35,586 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:35,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:35,586 INFO L82 PathProgramCache]: Analyzing trace with hash -878558549, now seen corresponding path program 1 times [2020-09-25 02:00:35,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:35,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606855027] [2020-09-25 02:00:35,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:35,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:35,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:36,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 02:00:36,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:00:36,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-09-25 02:00:36,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:36,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:36,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:00:36,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:00:36,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:36,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:36,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:36,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:36,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:36,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:00:36,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:36,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:36,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:36,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:36,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:36,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:00:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:36,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:36,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:00:36,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:00:36,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-09-25 02:00:36,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:36,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:00:36,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:00:36,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:36,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:36,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:36,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:36,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:36,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:00:36,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:36,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:36,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:36,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:00:36,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:36,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:00:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:36,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:36,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:36,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:36,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 02:00:36,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:36,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 02:00:36,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606855027] [2020-09-25 02:00:36,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:00:36,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:00:36,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67527032] [2020-09-25 02:00:36,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:00:36,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:36,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:00:36,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:00:36,728 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 8 states. [2020-09-25 02:00:36,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:36,889 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2020-09-25 02:00:36,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:00:36,890 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-25 02:00:36,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:36,892 INFO L225 Difference]: With dead ends: 75 [2020-09-25 02:00:36,892 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:00:36,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:00:36,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:00:36,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 02:00:36,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:00:36,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 02:00:36,902 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-25 02:00:36,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:36,903 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 02:00:36,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:00:36,903 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 02:00:36,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:00:36,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:36,905 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:36,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:00:36,906 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:36,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:36,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1009539825, now seen corresponding path program 2 times [2020-09-25 02:00:36,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:36,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671323340] [2020-09-25 02:00:36,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:36,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:36,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:37,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:39,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:39,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:00:39,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:39,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2239 [2020-09-25 02:00:39,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:39,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:00:39,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:00:39,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:00:39,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:39,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:39,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:39,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:39,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:39,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:39,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:39,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:39,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:39,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:39,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:39,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:39,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:00:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:39,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:39,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:39,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:41,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:41,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:00:41,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:00:41,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2232 [2020-09-25 02:00:41,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:00:41,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:41,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:00:41,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:41,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:41,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:41,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:41,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:41,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:00:41,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:41,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-09-25 02:00:41,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:41,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:00:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:00:41,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:41,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:41,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:41,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:41,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:41,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:41,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:00:41,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:41,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:00:41,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:41,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:41,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:00:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:41,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:41,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:41,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:41,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:41,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:00:41,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:41,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:41,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:41,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:41,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:41,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:00:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:41,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:41,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:41,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:41,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:41,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:00:41,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:41,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:00:41,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:41,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:41,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:41,943 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 02:00:41,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671323340] [2020-09-25 02:00:41,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:41,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:00:41,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400348508] [2020-09-25 02:00:41,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:00:41,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:41,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:00:41,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:00:41,948 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 9 states. [2020-09-25 02:00:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:42,058 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2020-09-25 02:00:42,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:00:42,058 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-09-25 02:00:42,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:42,060 INFO L225 Difference]: With dead ends: 54 [2020-09-25 02:00:42,060 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 02:00:42,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:00:42,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 02:00:42,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 02:00:42,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 02:00:42,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2020-09-25 02:00:42,079 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 52 [2020-09-25 02:00:42,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:42,080 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2020-09-25 02:00:42,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:00:42,081 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2020-09-25 02:00:42,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 02:00:42,086 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:42,086 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:42,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:00:42,086 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:42,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:42,090 INFO L82 PathProgramCache]: Analyzing trace with hash -858055544, now seen corresponding path program 3 times [2020-09-25 02:00:42,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:42,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807914761] [2020-09-25 02:00:42,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:42,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:42,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:43,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:44,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:44,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:47,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 02:00:47,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:00:47,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 02:00:47,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:00:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:00:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:00:47,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:47,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:00:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:47,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:47,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:00:47,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:47,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:00:47,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:47,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:47,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:47,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:00:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:47,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:47,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:50,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:50,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:50,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:51,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:51,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:51,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:51,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:51,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:51,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:51,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:52,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:52,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 02:00:52,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 02:00:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 02:00:52,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:00:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 02:00:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:00:52,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:52,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:52,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:52,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:52,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:00:52,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:52,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:00:52,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:52,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:52,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:52,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:52,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:52,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:52,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:52,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:52,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:00:52,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:52,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:00:52,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:52,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:52,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:52,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:52,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:52,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:52,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:52,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:52,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:52,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:52,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:52,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:52,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:52,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:52,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:52,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:52,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:00:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:52,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:52,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:52,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:52,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:52,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:00:52,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:52,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:52,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:52,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:00:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:52,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:52,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:52,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:52,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:52,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:00:52,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:52,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:52,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:52,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:52,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:52,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:00:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:52,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:52,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:52,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:52,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:52,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:54,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 02:00:54,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:00:54,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1890 [2020-09-25 02:00:54,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:54,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:00:54,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:00:54,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:00:54,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:54,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:54,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:54,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:55,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:00:55,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:00:55,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1530 [2020-09-25 02:00:55,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:00:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:55,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:00:55,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:55,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:55,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:55,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:00:55,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:55,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:00:55,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:55,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:00:55,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:55,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:00:55,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:55,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:00:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:55,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:55,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:55,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:55,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:00:55,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:55,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:55,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:55,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:55,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:00:55,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:00:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:55,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:55,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:00:55,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:55,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:00:55,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:55,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:00:55,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:55,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:00:55,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:55,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:00:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:55,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:55,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:55,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:00:55,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 02:00:55,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:55,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:00:55,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:00:55,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:00:55,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 02:00:55,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:00:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:55,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:55,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:00:55,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:00:55,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:00:55,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 02:00:55,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:00:55,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:00:55,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:00:55,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:00:55,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:00:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 217 proven. 13 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-09-25 02:00:56,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807914761] [2020-09-25 02:00:56,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:00:56,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:00:56,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792973313] [2020-09-25 02:00:56,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:00:56,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:00:56,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:00:56,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:00:56,071 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand 9 states. [2020-09-25 02:00:56,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:00:56,344 INFO L93 Difference]: Finished difference Result 110 states and 169 transitions. [2020-09-25 02:00:56,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:00:56,345 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 123 [2020-09-25 02:00:56,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:00:56,348 INFO L225 Difference]: With dead ends: 110 [2020-09-25 02:00:56,348 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 02:00:56,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:00:56,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 02:00:56,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 02:00:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 02:00:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2020-09-25 02:00:56,374 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 123 [2020-09-25 02:00:56,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:00:56,375 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2020-09-25 02:00:56,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:00:56,376 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2020-09-25 02:00:56,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-25 02:00:56,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:00:56,380 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:00:56,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:00:56,380 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:00:56,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:00:56,383 INFO L82 PathProgramCache]: Analyzing trace with hash 2025522005, now seen corresponding path program 4 times [2020-09-25 02:00:56,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:00:56,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014963681] [2020-09-25 02:00:56,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:00:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:00:56,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:56,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:56,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:56,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:56,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:57,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:00:58,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:00,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:01,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 02:01:01,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 02:01:01,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 02:01:01,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:01:01,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:01,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:01,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:01,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:01,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:01,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:01,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:01,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:01,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:01,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:01,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:04,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:05,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:05,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:05,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:06,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:06,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 02:01:06,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-25 02:01:06,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 02:01:06,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:01:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:01:06,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:01:06,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:06,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:06,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:06,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:06,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:06,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:06,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:06,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:09,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:09,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:01:09,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:01:09,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3303 [2020-09-25 02:01:09,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:09,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 02:01:09,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:09,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:01:09,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:09,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:09,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:09,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:09,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:10,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:10,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:10,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-09-25 02:01:10,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:10,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:01:10,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:10,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:01:10,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:10,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:10,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:10,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:10,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:10,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:01:10,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:10,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:10,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:10,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:10,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:10,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:10,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:10,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:01:10,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:10,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:10,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:10,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:10,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:10,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:10,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:10,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:10,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:10,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:10,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:10,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:10,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:10,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:10,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:01:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:10,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:10,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:13,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:01:13,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:01:13,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3154 [2020-09-25 02:01:13,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:13,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:13,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:13,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:01:13,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:13,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:13,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:13,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:13,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:13,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:01:13,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:13,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:13,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:13,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:01:13,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:13,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:13,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:13,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:13,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:13,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:13,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:13,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:13,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:13,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:13,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:13,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:13,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:13,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:13,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:13,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:13,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:13,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:13,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:13,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:13,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:13,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:13,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:13,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:13,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:01:13,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:13,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:13,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:13,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 96 proven. 130 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-09-25 02:01:13,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014963681] [2020-09-25 02:01:13,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:13,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 02:01:13,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58996602] [2020-09-25 02:01:13,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:01:13,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:13,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:01:13,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:01:13,683 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand 11 states. [2020-09-25 02:01:13,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:13,965 INFO L93 Difference]: Finished difference Result 109 states and 150 transitions. [2020-09-25 02:01:13,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:01:13,966 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2020-09-25 02:01:13,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:13,968 INFO L225 Difference]: With dead ends: 109 [2020-09-25 02:01:13,968 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 02:01:13,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:01:13,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 02:01:13,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-09-25 02:01:13,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 02:01:13,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2020-09-25 02:01:13,984 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 105 [2020-09-25 02:01:13,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:13,987 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2020-09-25 02:01:13,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:01:13,987 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2020-09-25 02:01:13,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 02:01:13,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:13,991 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:13,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:01:13,992 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:13,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:13,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1898581441, now seen corresponding path program 5 times [2020-09-25 02:01:13,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:13,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101598797] [2020-09-25 02:01:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:14,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:14,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:14,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:14,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:14,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:14,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:14,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:14,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:14,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:14,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:14,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:14,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:19,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:19,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 02:01:19,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 02:01:19,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 02:01:19,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:19,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:01:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:01:19,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:19,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:19,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:19,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:19,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:19,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:19,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:19,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:19,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:19,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:19,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:19,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:19,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:19,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:19,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:19,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:19,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:19,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:19,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:19,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:20,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:21,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking...