/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=WIDEST --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/Ackermann03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:08:14,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:08:14,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:08:14,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:08:14,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:08:14,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:08:14,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:08:14,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:08:14,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:08:14,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:08:14,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:08:14,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:08:14,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:08:14,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:08:14,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:08:14,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:08:14,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:08:14,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:08:14,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:08:14,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:08:14,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:08:14,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:08:14,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:08:14,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:08:14,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:08:14,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:08:14,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:08:14,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:08:14,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:08:14,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:08:14,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:08:14,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:08:14,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:08:14,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:08:14,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:08:14,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:08:14,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:08:14,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:08:14,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:08:14,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:08:14,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:08:14,468 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 03:08:14,495 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:08:14,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:08:14,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:08:14,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:08:14,497 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:08:14,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:08:14,498 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:08:14,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:08:14,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:08:14,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:08:14,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:08:14,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:08:14,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:08:14,499 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:08:14,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:08:14,500 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:08:14,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:08:14,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:08:14,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:08:14,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:08:14,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:08:14,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:08:14,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:08:14,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:08:14,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:08:14,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:08:14,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:08:14,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:08:14,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:08:14,503 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:08:14,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:08:14,991 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:08:14,996 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:08:14,998 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:08:14,999 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:08:15,000 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann03.c [2020-09-25 03:08:15,095 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3420f0f06/5946a0cbe76b434abad90894e7e01db4/FLAG25a3409d2 [2020-09-25 03:08:15,630 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:08:15,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann03.c [2020-09-25 03:08:15,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3420f0f06/5946a0cbe76b434abad90894e7e01db4/FLAG25a3409d2 [2020-09-25 03:08:15,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3420f0f06/5946a0cbe76b434abad90894e7e01db4 [2020-09-25 03:08:15,994 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:08:16,000 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:08:16,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:08:16,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:08:16,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:08:16,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:08:15" (1/1) ... [2020-09-25 03:08:16,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16, skipping insertion in model container [2020-09-25 03:08:16,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:08:15" (1/1) ... [2020-09-25 03:08:16,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:08:16,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:08:16,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:08:16,271 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:08:16,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:08:16,306 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:08:16,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16 WrapperNode [2020-09-25 03:08:16,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:08:16,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:08:16,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:08:16,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:08:16,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16" (1/1) ... [2020-09-25 03:08:16,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16" (1/1) ... [2020-09-25 03:08:16,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16" (1/1) ... [2020-09-25 03:08:16,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16" (1/1) ... [2020-09-25 03:08:16,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16" (1/1) ... [2020-09-25 03:08:16,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16" (1/1) ... [2020-09-25 03:08:16,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16" (1/1) ... [2020-09-25 03:08:16,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:08:16,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:08:16,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:08:16,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:08:16,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16" (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 03:08:16,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:08:16,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:08:16,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-09-25 03:08:16,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:08:16,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:08:16,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:08:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-09-25 03:08:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:08:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:08:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:08:16,734 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:08:16,735 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:08:16,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:08:16 BoogieIcfgContainer [2020-09-25 03:08:16,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:08:16,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:08:16,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:08:16,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:08:16,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:08:15" (1/3) ... [2020-09-25 03:08:16,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708624fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:08:16, skipping insertion in model container [2020-09-25 03:08:16,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:16" (2/3) ... [2020-09-25 03:08:16,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@708624fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:08:16, skipping insertion in model container [2020-09-25 03:08:16,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:08:16" (3/3) ... [2020-09-25 03:08:16,751 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann03.c [2020-09-25 03:08:16,769 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:08:16,783 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:08:16,811 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:08:16,859 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:08:16,859 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:08:16,859 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:08:16,859 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:08:16,860 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:08:16,860 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:08:16,860 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:08:16,860 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:08:16,887 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-25 03:08:16,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 03:08:16,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:16,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:16,901 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:16,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:16,910 INFO L82 PathProgramCache]: Analyzing trace with hash -852610024, now seen corresponding path program 1 times [2020-09-25 03:08:16,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:16,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061341992] [2020-09-25 03:08:16,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:17,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:17,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:17,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:08:17,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:17,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 03:08:17,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:17,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:08:17,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:08:17,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 03:08:17,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:08:17,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:17,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:17,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:17,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:17,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:17,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:08:17,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:17,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:17,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:17,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:08:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:17,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:17,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:17,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:17,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 03:08:17,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:17,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:08:17,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:17,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:17,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:17,495 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 03:08:17,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061341992] [2020-09-25 03:08:17,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:08:17,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:08:17,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733799644] [2020-09-25 03:08:17,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:08:17,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:17,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:08:17,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:08:17,525 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 5 states. [2020-09-25 03:08:17,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:17,676 INFO L93 Difference]: Finished difference Result 88 states and 110 transitions. [2020-09-25 03:08:17,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:08:17,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-25 03:08:17,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:17,697 INFO L225 Difference]: With dead ends: 88 [2020-09-25 03:08:17,697 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 03:08:17,703 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 03:08:17,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 03:08:17,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 03:08:17,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 03:08:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-09-25 03:08:17,773 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 24 [2020-09-25 03:08:17,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:17,774 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-09-25 03:08:17,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:08:17,774 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-09-25 03:08:17,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:08:17,778 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:17,778 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:17,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:08:17,779 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:17,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:17,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1574290279, now seen corresponding path program 1 times [2020-09-25 03:08:17,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:17,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350286008] [2020-09-25 03:08:17,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:17,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:17,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:18,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 03:08:18,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:18,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-09-25 03:08:18,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:18,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:08:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:08:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 03:08:18,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:08:18,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:18,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:18,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:18,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:18,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:08:18,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:18,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:18,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:08:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:18,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:18,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:08:18,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:18,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 03:08:18,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:08:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:08:18,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:18,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:18,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:18,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:18,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:18,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:08:18,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:18,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:18,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:18,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:18,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:08:18,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350286008] [2020-09-25 03:08:18,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:18,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 03:08:18,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078123585] [2020-09-25 03:08:18,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:08:18,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:18,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:08:18,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:08:18,437 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-09-25 03:08:18,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:18,527 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2020-09-25 03:08:18,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:08:18,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-25 03:08:18,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:18,531 INFO L225 Difference]: With dead ends: 83 [2020-09-25 03:08:18,532 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 03:08:18,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 03:08:18,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 03:08:18,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-25 03:08:18,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 03:08:18,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2020-09-25 03:08:18,546 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 34 [2020-09-25 03:08:18,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:18,547 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2020-09-25 03:08:18,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:08:18,547 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2020-09-25 03:08:18,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:08:18,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:18,550 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:18,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:08:18,551 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:18,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:18,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1685750542, now seen corresponding path program 1 times [2020-09-25 03:08:18,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:18,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629054668] [2020-09-25 03:08:18,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:18,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:18,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:21,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:21,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:08:21,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:08:21,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3241 [2020-09-25 03:08:21,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:21,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:08:21,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:08:21,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 03:08:21,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:21,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:21,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:21,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:21,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:21,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:21,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:21,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:21,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:21,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:08:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:21,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:21,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:21,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:08:21,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:21,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 03:08:21,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:08:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:08:21,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:21,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:21,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:22,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:22,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:08:22,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:22,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 03:08:22,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:08:22,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:22,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:22,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:22,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:22,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:22,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:22,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:08:22,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:22,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:22,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:22,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:22,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:22,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 03:08:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:22,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:22,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:22,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:22,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:22,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:08:22,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:22,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 03:08:22,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629054668] [2020-09-25 03:08:22,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:22,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:08:22,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956559576] [2020-09-25 03:08:22,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:08:22,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:22,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:08:22,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:08:22,087 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand 7 states. [2020-09-25 03:08:22,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:22,224 INFO L93 Difference]: Finished difference Result 75 states and 97 transitions. [2020-09-25 03:08:22,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:08:22,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-09-25 03:08:22,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:22,228 INFO L225 Difference]: With dead ends: 75 [2020-09-25 03:08:22,229 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 03:08:22,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 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 03:08:22,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 03:08:22,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-09-25 03:08:22,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-25 03:08:22,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2020-09-25 03:08:22,245 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 53 [2020-09-25 03:08:22,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:22,245 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2020-09-25 03:08:22,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:08:22,259 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2020-09-25 03:08:22,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 03:08:22,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:22,269 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:22,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:08:22,270 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:22,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:22,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1817818703, now seen corresponding path program 2 times [2020-09-25 03:08:22,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:22,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122360560] [2020-09-25 03:08:22,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:22,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:22,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:22,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:25,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:25,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 03:08:25,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:08:25,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2987 [2020-09-25 03:08:25,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:25,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:08:25,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:08:25,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 03:08:25,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:25,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:25,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:25,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:25,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:25,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:25,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:25,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:25,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:25,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:08:25,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:25,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:25,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:25,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:28,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:28,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 03:08:28,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:08:28,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3103 [2020-09-25 03:08:28,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:08:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 03:08:28,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:28,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:28,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:28,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:28,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:28,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:08:28,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:28,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 523 [2020-09-25 03:08:28,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:08:28,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:28,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:08:28,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:29,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:08:29,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:29,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 03:08:29,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:29,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:29,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:08:29,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:29,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:29,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:29,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:08:29,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:29,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:29,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 03:08:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:29,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:29,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:08:29,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:29,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:29,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:29,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 03:08:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:29,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:29,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:29,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:08:29,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:29,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:29,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:29,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:29,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 6 proven. 44 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-25 03:08:29,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122360560] [2020-09-25 03:08:29,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:29,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:08:29,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849610392] [2020-09-25 03:08:29,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:08:29,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:29,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:08:29,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:08:29,160 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand 7 states. [2020-09-25 03:08:29,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:29,311 INFO L93 Difference]: Finished difference Result 107 states and 159 transitions. [2020-09-25 03:08:29,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:08:29,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2020-09-25 03:08:29,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:29,316 INFO L225 Difference]: With dead ends: 107 [2020-09-25 03:08:29,316 INFO L226 Difference]: Without dead ends: 101 [2020-09-25 03:08:29,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:08:29,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-25 03:08:29,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-09-25 03:08:29,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-25 03:08:29,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 153 transitions. [2020-09-25 03:08:29,338 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 153 transitions. Word has length 72 [2020-09-25 03:08:29,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:29,339 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 153 transitions. [2020-09-25 03:08:29,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:08:29,339 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 153 transitions. [2020-09-25 03:08:29,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 03:08:29,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:29,345 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 11, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:29,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:08:29,345 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:29,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:29,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1454565455, now seen corresponding path program 3 times [2020-09-25 03:08:29,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:29,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593499757] [2020-09-25 03:08:29,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:29,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:29,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:34,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 03:08:34,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:08:34,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 03:08:34,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:34,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 03:08:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 03:08:34,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 03:08:34,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:34,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:34,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:34,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:34,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:34,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:34,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:34,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:34,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:34,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:08:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:34,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:34,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:36,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:39,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:39,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 03:08:39,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:08:39,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 03:08:39,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 03:08:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:08:39,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 03:08:39,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:39,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:39,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:39,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:39,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:40,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:40,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:40,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:40,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:41,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:44,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:44,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 03:08:44,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:08:44,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 03:08:44,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:44,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:08:44,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:08:44,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 03:08:44,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:44,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:44,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:44,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:45,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:45,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 03:08:45,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:45,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-09-25 03:08:45,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:45,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:08:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 03:08:45,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:45,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:45,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:45,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:45,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:45,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:08:45,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:45,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-09-25 03:08:45,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:45,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:08:45,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:45,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:08:45,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:45,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:45,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:45,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:45,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:08:45,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:45,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 03:08:45,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:45,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:45,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:45,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:08:45,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:45,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:45,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:45,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:45,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:45,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:45,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 03:08:45,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:45,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:45,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:45,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:45,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:45,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 03:08:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:45,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:45,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:45,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:45,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:45,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:08:45,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:45,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:45,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:45,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:45,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:45,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 03:08:45,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:45,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:45,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 03:08:46,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:46,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-09-25 03:08:46,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:08:46,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:08:46,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 03:08:46,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:46,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:08:46,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:46,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-09-25 03:08:46,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:08:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:08:46,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:46,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:08:46,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:46,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 03:08:46,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:46,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:08:46,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:46,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:46,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:46,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 03:08:46,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:46,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:46,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 03:08:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:46,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:46,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:46,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:08:46,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:46,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:46,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:46,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:46,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:46,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-25 03:08:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:46,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:46,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:47,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:47,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 03:08:47,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:08:47,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 985 [2020-09-25 03:08:47,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:08:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:08:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 03:08:47,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:47,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:47,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:47,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:48,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:48,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:08:48,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:48,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-09-25 03:08:48,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:08:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:08:48,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:48,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:48,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:48,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:48,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:08:48,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:48,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 03:08:48,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:48,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:48,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:48,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:08:48,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:48,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:48,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:48,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:48,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:48,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:48,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 03:08:48,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:48,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:48,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:48,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:48,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 03:08:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:48,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:48,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:48,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:48,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:48,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:08:48,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:48,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:08:48,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 269 proven. 303 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2020-09-25 03:08:48,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593499757] [2020-09-25 03:08:48,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:48,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:08:48,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054085711] [2020-09-25 03:08:48,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:08:48,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:48,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:08:48,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:08:48,516 INFO L87 Difference]: Start difference. First operand 101 states and 153 transitions. Second operand 13 states. [2020-09-25 03:08:48,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:48,949 INFO L93 Difference]: Finished difference Result 228 states and 463 transitions. [2020-09-25 03:08:48,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 03:08:48,950 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 179 [2020-09-25 03:08:48,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:48,955 INFO L225 Difference]: With dead ends: 228 [2020-09-25 03:08:48,955 INFO L226 Difference]: Without dead ends: 125 [2020-09-25 03:08:48,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-09-25 03:08:48,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-25 03:08:48,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-09-25 03:08:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 03:08:48,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 188 transitions. [2020-09-25 03:08:48,979 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 188 transitions. Word has length 179 [2020-09-25 03:08:48,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:48,980 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 188 transitions. [2020-09-25 03:08:48,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:08:48,980 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 188 transitions. [2020-09-25 03:08:48,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 03:08:48,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:48,982 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:48,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:08:48,982 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:48,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:48,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1778048969, now seen corresponding path program 4 times [2020-09-25 03:08:48,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:48,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060906892] [2020-09-25 03:08:48,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:49,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:49,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:54,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:54,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 03:08:54,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:54,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 03:08:54,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 03:08:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 03:08:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:08:54,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:54,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:54,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:54,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:54,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:54,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:54,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:08:54,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:54,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:54,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:54,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:08:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:54,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:54,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:58,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:58,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-25 03:08:58,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:08:58,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4899 [2020-09-25 03:08:58,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:58,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 03:08:58,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 03:08:58,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:08:58,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:58,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 03:08:59,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-09-25 03:08:59,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 03:08:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 03:08:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:08:59,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 03:08:59,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 03:08:59,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 03:08:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:59,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 03:08:59,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:08:59,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 03:08:59,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 03:08:59,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:59,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 03:08:59,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:08:59,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 03:08:59,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:08:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 03:08:59,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:08:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:59,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:08:59,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:59,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 03:08:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:08:59,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:08:59,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:08:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:59,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:59,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:59,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 03:08:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:59,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:59,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:59,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:08:59,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:59,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 03:08:59,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:59,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:08:59,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:08:59,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 03:08:59,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:00,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:09:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:00,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:00,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:00,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:00,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:09:00,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:00,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:00,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 03:09:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:00,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:00,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 03:09:00,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:00,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:09:00,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:00,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:00,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 03:09:00,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:00,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:00,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:09:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:00,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:00,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:00,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:00,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:09:00,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:00,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:00,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:00,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:00,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:00,070 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 78 proven. 92 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-09-25 03:09:00,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060906892] [2020-09-25 03:09:00,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:00,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:09:00,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995667384] [2020-09-25 03:09:00,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:09:00,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:00,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:09:00,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:09:00,073 INFO L87 Difference]: Start difference. First operand 125 states and 188 transitions. Second operand 13 states. [2020-09-25 03:09:00,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:00,415 INFO L93 Difference]: Finished difference Result 226 states and 362 transitions. [2020-09-25 03:09:00,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:09:00,415 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 121 [2020-09-25 03:09:00,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:00,418 INFO L225 Difference]: With dead ends: 226 [2020-09-25 03:09:00,418 INFO L226 Difference]: Without dead ends: 125 [2020-09-25 03:09:00,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2020-09-25 03:09:00,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-09-25 03:09:00,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-09-25 03:09:00,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 03:09:00,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 180 transitions. [2020-09-25 03:09:00,435 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 180 transitions. Word has length 121 [2020-09-25 03:09:00,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:00,436 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 180 transitions. [2020-09-25 03:09:00,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:09:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 180 transitions. [2020-09-25 03:09:00,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 03:09:00,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:00,438 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 9, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:00,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:09:00,439 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:00,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:00,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1276982865, now seen corresponding path program 5 times [2020-09-25 03:09:00,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:00,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892798906] [2020-09-25 03:09:00,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:00,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:00,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:05,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:05,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 03:09:05,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:05,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 03:09:05,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 03:09:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 03:09:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:09:05,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:05,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:05,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:05,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:05,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:05,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:05,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:05,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:05,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:05,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:05,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 03:09:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:05,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:05,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking...