/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-simple/fibo_25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:01:26,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:01:26,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:01:26,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:01:26,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:01:26,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:01:26,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:01:26,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:01:26,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:01:26,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:01:26,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:01:26,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:01:26,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:01:26,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:01:26,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:01:26,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:01:26,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:01:26,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:01:26,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:01:26,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:01:26,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:01:26,367 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:01:26,369 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:01:26,370 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:01:26,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:01:26,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:01:26,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:01:26,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:01:26,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:01:26,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:01:26,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:01:26,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:01:26,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:01:26,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:01:26,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:01:26,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:01:26,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:01:26,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:01:26,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:01:26,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:01:26,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:01:26,385 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 02:01:26,432 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:01:26,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:01:26,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:01:26,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:01:26,435 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:01:26,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:01:26,435 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:01:26,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:01:26,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:01:26,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:01:26,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:01:26,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:01:26,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:01:26,438 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:01:26,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:01:26,439 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:01:26,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:01:26,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:01:26,440 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:01:26,440 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:01:26,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:01:26,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:01:26,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:01:26,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:01:26,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:01:26,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:01:26,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:01:26,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:01:26,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:01:26,443 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 02:01:26,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:01:26,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:01:26,950 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:01:26,952 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:01:26,953 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:01:26,954 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_25-2.c [2020-09-25 02:01:27,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c3038eb0/49adf78662a7474eb373b2142b5687d1/FLAGf266257b8 [2020-09-25 02:01:27,614 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:01:27,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_25-2.c [2020-09-25 02:01:27,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c3038eb0/49adf78662a7474eb373b2142b5687d1/FLAGf266257b8 [2020-09-25 02:01:27,966 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7c3038eb0/49adf78662a7474eb373b2142b5687d1 [2020-09-25 02:01:27,982 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:01:27,988 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:01:27,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:01:27,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:01:27,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:01:27,996 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:01:27" (1/1) ... [2020-09-25 02:01:28,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@498186d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:27, skipping insertion in model container [2020-09-25 02:01:28,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:01:27" (1/1) ... [2020-09-25 02:01:28,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:01:28,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:01:28,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:01:28,301 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:01:28,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:01:28,334 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:01:28,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:28 WrapperNode [2020-09-25 02:01:28,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:01:28,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:01:28,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:01:28,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:01:28,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:28" (1/1) ... [2020-09-25 02:01:28,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:28" (1/1) ... [2020-09-25 02:01:28,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:28" (1/1) ... [2020-09-25 02:01:28,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:28" (1/1) ... [2020-09-25 02:01:28,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:28" (1/1) ... [2020-09-25 02:01:28,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:28" (1/1) ... [2020-09-25 02:01:28,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:28" (1/1) ... [2020-09-25 02:01:28,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:01:28,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:01:28,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:01:28,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:01:28,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:28" (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 02:01:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:01:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:01:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 02:01:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:01:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:01:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:01:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 02:01:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:01:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:01:28,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:01:28,754 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:01:28,755 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:01:28,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:01:28 BoogieIcfgContainer [2020-09-25 02:01:28,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:01:28,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:01:28,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:01:28,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:01:28,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:01:27" (1/3) ... [2020-09-25 02:01:28,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306de379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:01:28, skipping insertion in model container [2020-09-25 02:01:28,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:28" (2/3) ... [2020-09-25 02:01:28,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306de379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:01:28, skipping insertion in model container [2020-09-25 02:01:28,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:01:28" (3/3) ... [2020-09-25 02:01:28,771 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_25-2.c [2020-09-25 02:01:28,784 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:01:28,795 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:01:28,826 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:01:28,868 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:01:28,872 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:01:28,872 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:01:28,872 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:01:28,872 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:01:28,872 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:01:28,872 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:01:28,873 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:01:28,898 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 02:01:28,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 02:01:28,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:28,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:28,910 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:28,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:28,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 02:01:28,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:28,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509600907] [2020-09-25 02:01:28,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:01:29,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:29,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 02:01:29,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:29,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:29,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:01:29,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:01:29,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:29,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:29,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:01:29,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:29,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:29,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:29,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:29,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:29,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:29,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:01:29,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:29,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:29,256 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 02:01:29,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509600907] [2020-09-25 02:01:29,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:01:29,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:01:29,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728066528] [2020-09-25 02:01:29,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:01:29,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:29,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:01:29,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:01:29,291 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 02:01:29,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:29,414 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 02:01:29,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:01:29,416 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 02:01:29,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:29,430 INFO L225 Difference]: With dead ends: 44 [2020-09-25 02:01:29,431 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 02:01:29,436 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 02:01:29,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 02:01:29,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 02:01:29,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:01:29,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:01:29,497 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 02:01:29,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:29,498 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:01:29,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:01:29,498 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:01:29,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 02:01:29,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:29,501 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 02:01:29,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:01:29,502 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:29,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:29,503 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 02:01:29,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:29,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050358985] [2020-09-25 02:01:29,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 02:01:29,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:29,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 02:01:29,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:29,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:29,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:29,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:29,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:29,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:29,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:29,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:29,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:29,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:29,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:29,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 02:01:29,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:29,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:29,754 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 02:01:29,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050358985] [2020-09-25 02:01:29,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:01:29,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:01:29,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725284710] [2020-09-25 02:01:29,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:01:29,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:29,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:01:29,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:01:29,759 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 02:01:29,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:29,827 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 02:01:29,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:01:29,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 02:01:29,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:29,830 INFO L225 Difference]: With dead ends: 36 [2020-09-25 02:01:29,831 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:01:29,832 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 02:01:29,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:01:29,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 02:01:29,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:01:29,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:01:29,841 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 02:01:29,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:29,841 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:01:29,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:01:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:01:29,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 02:01:29,846 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:29,848 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 02:01:29,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:01:29,848 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:29,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:29,849 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 02:01:29,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:29,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010783790] [2020-09-25 02:01:29,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:30,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:30,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 02:01:30,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:30,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 632 [2020-09-25 02:01:30,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:30,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:30,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:01:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:30,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:01:30,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:30,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:30,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:30,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:30,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:30,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:30,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:30,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:30,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:30,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:30,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:30,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:30,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:30,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:30,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 02:01:30,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:30,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 02:01:30,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:30,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:30,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:01:30,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:30,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:30,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:30,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:30,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:30,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:30,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:30,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:01:30,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:30,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:30,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:30,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:30,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:30,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:01:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:30,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:30,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:30,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:30,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:30,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:01:30,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:30,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:30,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:01:30,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:30,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:30,744 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 02:01:30,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010783790] [2020-09-25 02:01:30,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:30,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:01:30,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821518438] [2020-09-25 02:01:30,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:01:30,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:30,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:01:30,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:01:30,754 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 02:01:30,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:30,878 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-25 02:01:30,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:01:30,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 02:01:30,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:30,881 INFO L225 Difference]: With dead ends: 52 [2020-09-25 02:01:30,881 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:01:30,882 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 02:01:30,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:01:30,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 02:01:30,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 02:01:30,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 02:01:30,891 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-25 02:01:30,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:30,892 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 02:01:30,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:01:30,892 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 02:01:30,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 02:01:30,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:30,894 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 02:01:30,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:01:30,895 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:30,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:30,895 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 02:01:30,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:30,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71335361] [2020-09-25 02:01:30,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:30,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:30,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:31,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:01:31,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:31,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-09-25 02:01:31,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:31,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:31,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:31,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:01:31,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:31,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:31,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:31,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:31,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:31,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:31,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:31,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:31,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:31,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:31,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:31,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:31,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:31,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:31,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:31,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-09-25 02:01:31,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:31,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:31,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:31,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:01:31,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:31,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:31,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:31,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:31,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:31,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:01:31,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:31,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:31,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:31,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:31,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:31,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:31,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:31,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:31,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:31,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:31,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:31,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:31,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:31,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:31,746 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 02:01:31,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71335361] [2020-09-25 02:01:31,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:31,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:01:31,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916138005] [2020-09-25 02:01:31,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:01:31,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:31,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:01:31,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:01:31,750 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-25 02:01:31,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:31,833 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-09-25 02:01:31,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:01:31,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 02:01:31,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:31,836 INFO L225 Difference]: With dead ends: 42 [2020-09-25 02:01:31,836 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 02:01:31,837 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 02:01:31,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 02:01:31,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-25 02:01:31,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 02:01:31,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 02:01:31,845 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 34 [2020-09-25 02:01:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:31,846 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 02:01:31,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:01:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 02:01:31,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:01:31,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:31,848 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 02:01:31,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:01:31,849 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:31,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:31,849 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 02:01:31,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:31,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365080578] [2020-09-25 02:01:31,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:31,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:32,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 02:01:32,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:01:32,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-09-25 02:01:32,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:32,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:32,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:32,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:01:32,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:32,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:32,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:32,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:32,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:32,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:01:32,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:32,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:32,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:32,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:32,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:32,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:32,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:32,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:01:32,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:01:32,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-09-25 02:01:32,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:32,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:32,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:01:32,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:01:32,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:32,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:32,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:32,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:32,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:32,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:01:32,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:32,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:32,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:32,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:32,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:32,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:32,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:32,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:32,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:32,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:01:32,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:32,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:32,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:32,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:32,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:33,006 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 02:01:33,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365080578] [2020-09-25 02:01:33,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:01:33,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:01:33,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645034814] [2020-09-25 02:01:33,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:01:33,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:33,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:01:33,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:01:33,009 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 8 states. [2020-09-25 02:01:33,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:33,151 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2020-09-25 02:01:33,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:01:33,152 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-25 02:01:33,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:33,155 INFO L225 Difference]: With dead ends: 75 [2020-09-25 02:01:33,156 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:01:33,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:01:33,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:01:33,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 02:01:33,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:01:33,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 02:01:33,174 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-25 02:01:33,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:33,174 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 02:01:33,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:01:33,175 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 02:01:33,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:01:33,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:33,177 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 02:01:33,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:01:33,178 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:33,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:33,178 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-25 02:01:33,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:33,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690361599] [2020-09-25 02:01:33,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:33,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:33,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:33,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:35,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:35,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:01:35,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:35,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2050 [2020-09-25 02:01:35,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:35,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:01:35,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:35,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:35,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:35,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:35,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:35,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:35,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:35,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:35,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:35,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:35,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:35,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:35,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:35,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:35,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:35,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:37,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:01:37,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:37,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2028 [2020-09-25 02:01:37,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:37,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:37,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:37,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:01:37,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:37,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:37,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:37,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:37,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:37,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 02:01:37,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:37,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:37,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:37,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:01:37,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:37,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:37,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:37,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:37,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:37,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:01:37,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:37,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:37,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:37,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:37,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:37,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:37,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:37,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:37,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:37,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:01:37,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:37,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:37,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:37,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:37,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:37,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:37,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:01:37,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:37,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:37,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:37,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:37,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:37,470 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 02:01:37,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690361599] [2020-09-25 02:01:37,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:37,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:01:37,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863032201] [2020-09-25 02:01:37,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:01:37,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:37,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:01:37,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:01:37,474 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-25 02:01:37,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:37,600 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-09-25 02:01:37,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:01:37,601 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 02:01:37,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:37,602 INFO L225 Difference]: With dead ends: 52 [2020-09-25 02:01:37,602 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:01:37,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:01:37,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:01:37,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 02:01:37,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:01:37,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 02:01:37,611 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 52 [2020-09-25 02:01:37,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:37,611 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 02:01:37,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:01:37,612 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 02:01:37,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 02:01:37,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:37,614 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:37,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:01:37,614 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:37,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:37,614 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-25 02:01:37,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:37,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393443814] [2020-09-25 02:01:37,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:37,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:37,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:38,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:38,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:41,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:41,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:42,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 02:01:42,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:01:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 02:01:42,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:01:42,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:42,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:42,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:42,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:42,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:42,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:01:42,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:42,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:42,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:42,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:42,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:42,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:42,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:44,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:44,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:47,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 02:01:47,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:01:47,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:01:47,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:47,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:47,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:01:47,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 02:01:47,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:47,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:47,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:48,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:48,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:48,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-09-25 02:01:48,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:01:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:48,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:01:48,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:48,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:48,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:48,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:48,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:48,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:01:48,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:48,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:48,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:48,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:48,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:48,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:48,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:48,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:01:48,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:48,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:48,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:48,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:48,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:48,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:48,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:48,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:01:48,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:01:48,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-09-25 02:01:48,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:48,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:48,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:48,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:01:48,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:48,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:48,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:49,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:49,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:49,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 02:01:49,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:49,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:49,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:49,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:01:49,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:49,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:49,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:49,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:49,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:49,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:49,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:49,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:49,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:49,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:49,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:49,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:49,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:49,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:49,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:49,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:49,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:49,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:49,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:49,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:49,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:49,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:49,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:49,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:49,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:49,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:49,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:49,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:49,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:49,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:49,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:49,346 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 58 proven. 97 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-09-25 02:01:49,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393443814] [2020-09-25 02:01:49,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:49,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 02:01:49,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884181553] [2020-09-25 02:01:49,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 02:01:49,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:49,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 02:01:49,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:01:49,349 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 14 states. [2020-09-25 02:01:49,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:49,713 INFO L93 Difference]: Finished difference Result 92 states and 125 transitions. [2020-09-25 02:01:49,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 02:01:49,714 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2020-09-25 02:01:49,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:49,716 INFO L225 Difference]: With dead ends: 92 [2020-09-25 02:01:49,716 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 02:01:49,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-09-25 02:01:49,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 02:01:49,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 02:01:49,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 02:01:49,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2020-09-25 02:01:49,727 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 87 [2020-09-25 02:01:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:49,727 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2020-09-25 02:01:49,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 02:01:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2020-09-25 02:01:49,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 02:01:49,729 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:49,729 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 02:01:49,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:01:49,730 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:49,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:49,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 4 times [2020-09-25 02:01:49,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:49,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552649866] [2020-09-25 02:01:49,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:49,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:50,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:50,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:50,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:50,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:50,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:51,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:51,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:54,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 02:01:54,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:01:54,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 02:01:54,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:54,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:01:54,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:54,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:54,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:54,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:54,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:54,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:54,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:54,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:54,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:54,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:54,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:54,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:55,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:55,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:56,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:56,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:56,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:56,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:56,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:56,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:56,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:56,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:56,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:57,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:57,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:57,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:58,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:59,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 02:01:59,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-25 02:01:59,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 02:01:59,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:59,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:59,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 02:01:59,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:01:59,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:59,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:59,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:59,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:01:59,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:59,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 02:01:59,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:59,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:59,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:59,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:59,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:59,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:59,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:59,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:59,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:59,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:59,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:59,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:59,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:59,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:59,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:59,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:59,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:59,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:59,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:59,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:59,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:59,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:59,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:59,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:59,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:59,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:59,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:59,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:59,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:59,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:59,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:59,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:59,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:59,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:59,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:59,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:59,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:59,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:59,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:59,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:01:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:59,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:59,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:00,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:00,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:02,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 02:02:02,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:02:02,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2613 [2020-09-25 02:02:02,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:02,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:02:02,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:02:02,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:02:02,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:02,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:02,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:05,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:05,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:02:05,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:02:05,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3256 [2020-09-25 02:02:05,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:02:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:02:05,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:05,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:05,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:05,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:05,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:05,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:05,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 02:02:05,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:05,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:02:05,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:05,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:05,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:05,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:05,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:05,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:05,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:02:05,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:05,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:05,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:05,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:05,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:05,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:05,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:05,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:05,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:02:05,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:05,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:05,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:05,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:05,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:05,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:02:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:05,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:05,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:05,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:05,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:05,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:02:05,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 02:02:05,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:05,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:05,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:05,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:02:05,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:05,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:02:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:05,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:05,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:05,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:05,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:05,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:02:05,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:05,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:05,996 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 214 proven. 18 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2020-09-25 02:02:05,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552649866] [2020-09-25 02:02:05,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:05,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 02:02:05,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177417503] [2020-09-25 02:02:05,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 02:02:05,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:05,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 02:02:05,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:02:05,999 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 10 states. [2020-09-25 02:02:06,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:06,194 INFO L93 Difference]: Finished difference Result 105 states and 128 transitions. [2020-09-25 02:02:06,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 02:02:06,195 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 123 [2020-09-25 02:02:06,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:06,196 INFO L225 Difference]: With dead ends: 105 [2020-09-25 02:02:06,197 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 02:02:06,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:02:06,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 02:02:06,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-25 02:02:06,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 02:02:06,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2020-09-25 02:02:06,218 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 123 [2020-09-25 02:02:06,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:06,220 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2020-09-25 02:02:06,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 02:02:06,220 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2020-09-25 02:02:06,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 02:02:06,224 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:06,224 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:06,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:02:06,228 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:06,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:06,228 INFO L82 PathProgramCache]: Analyzing trace with hash 866676589, now seen corresponding path program 5 times [2020-09-25 02:02:06,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:06,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928037118] [2020-09-25 02:02:06,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:06,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:06,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:06,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:06,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:08,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:11,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 02:02:11,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:02:11,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:02:11,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:11,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:02:11,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:11,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:02:11,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:11,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:11,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:11,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:11,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:11,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:02:11,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:11,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:11,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:11,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:11,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:11,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:16,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:16,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 02:02:16,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:02:16,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 02:02:16,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:16,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:02:16,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:16,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 02:02:16,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:16,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:16,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:16,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:16,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:17,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:17,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:02:17,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:02:17,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1555 [2020-09-25 02:02:17,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:17,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:02:17,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:17,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:02:17,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:17,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:17,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:17,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:17,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:17,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:17,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 02:02:17,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:17,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:02:17,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:17,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:17,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:17,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:17,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:17,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:17,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:02:17,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:17,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:17,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:17,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:17,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:17,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:17,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:17,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:17,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:17,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:17,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:02:17,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:17,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:17,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:17,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:17,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:17,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:02:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:17,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:17,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:17,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:17,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:17,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:02:17,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:17,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:17,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:17,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:02:17,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:18,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:02:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:18,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:18,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:18,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:18,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:18,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 02:02:18,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:18,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:18,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:18,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:02:18,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:18,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:18,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:18,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:18,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:18,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:02:18,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:18,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:18,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:18,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:18,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:18,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:18,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:18,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:18,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:02:18,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:18,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:18,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:18,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:18,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 65 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-09-25 02:02:18,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928037118] [2020-09-25 02:02:18,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:18,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:02:18,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315736515] [2020-09-25 02:02:18,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:02:18,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:18,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:02:18,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:02:18,083 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand 9 states. [2020-09-25 02:02:18,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:18,205 INFO L93 Difference]: Finished difference Result 90 states and 112 transitions. [2020-09-25 02:02:18,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:02:18,205 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-25 02:02:18,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:18,207 INFO L225 Difference]: With dead ends: 90 [2020-09-25 02:02:18,207 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 02:02:18,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:02:18,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 02:02:18,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-09-25 02:02:18,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-25 02:02:18,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2020-09-25 02:02:18,219 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 87 [2020-09-25 02:02:18,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:18,220 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2020-09-25 02:02:18,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:02:18,220 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2020-09-25 02:02:18,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 02:02:18,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:18,222 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:18,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:02:18,222 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:18,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:18,223 INFO L82 PathProgramCache]: Analyzing trace with hash 784666824, now seen corresponding path program 6 times [2020-09-25 02:02:18,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:18,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775197839] [2020-09-25 02:02:18,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:18,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:18,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:18,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:18,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:18,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:18,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:18,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:19,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:19,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking...