/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_7-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:40:36,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:40:36,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:40:36,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:40:36,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:40:36,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:40:36,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:40:36,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:40:36,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:40:36,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:40:36,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:40:36,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:40:36,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:40:36,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:40:36,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:40:36,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:40:36,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:40:36,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:40:36,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:40:36,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:40:36,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:40:36,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:40:36,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:40:36,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:40:36,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:40:36,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:40:36,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:40:36,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:40:36,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:40:36,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:40:36,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:40:36,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:40:36,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:40:36,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:40:36,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:40:36,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:40:36,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:40:36,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:40:36,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:40:36,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:40:36,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:40:36,928 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:40:36,978 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:40:36,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:40:36,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:40:36,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:40:36,981 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:40:36,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:40:36,981 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:40:36,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:40:36,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:40:36,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:40:36,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:40:36,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:40:36,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:40:36,984 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:40:36,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:40:36,985 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:40:36,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:40:36,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:40:36,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:40:36,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:40:36,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:40:36,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:40:36,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:40:36,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:40:36,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:40:36,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:40:36,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:40:36,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:40:36,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:40:36,987 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:40:37,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:40:37,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:40:37,457 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:40:37,461 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:40:37,462 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:40:37,463 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_7-2.c [2020-09-24 22:40:37,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/653930c24/0cf91c5307b74e299ce5b61cdaa46f7e/FLAGb36f718c4 [2020-09-24 22:40:38,103 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:40:38,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_7-2.c [2020-09-24 22:40:38,113 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/653930c24/0cf91c5307b74e299ce5b61cdaa46f7e/FLAGb36f718c4 [2020-09-24 22:40:38,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/653930c24/0cf91c5307b74e299ce5b61cdaa46f7e [2020-09-24 22:40:38,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:40:38,471 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:40:38,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:40:38,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:40:38,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:40:38,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:40:38" (1/1) ... [2020-09-24 22:40:38,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e56642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:38, skipping insertion in model container [2020-09-24 22:40:38,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:40:38" (1/1) ... [2020-09-24 22:40:38,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:40:38,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:40:38,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:40:38,763 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:40:38,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:40:38,793 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:40:38,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:38 WrapperNode [2020-09-24 22:40:38,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:40:38,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:40:38,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:40:38,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:40:38,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:38" (1/1) ... [2020-09-24 22:40:38,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:38" (1/1) ... [2020-09-24 22:40:38,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:38" (1/1) ... [2020-09-24 22:40:38,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:38" (1/1) ... [2020-09-24 22:40:38,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:38" (1/1) ... [2020-09-24 22:40:38,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:38" (1/1) ... [2020-09-24 22:40:38,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:38" (1/1) ... [2020-09-24 22:40:38,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:40:38,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:40:38,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:40:38,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:40:38,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:40:38,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:40:38,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:40:38,988 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 22:40:38,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:40:38,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:40:38,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:40:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 22:40:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:40:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:40:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:40:39,201 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:40:39,201 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:40:39,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:40:39 BoogieIcfgContainer [2020-09-24 22:40:39,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:40:39,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:40:39,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:40:39,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:40:39,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:40:38" (1/3) ... [2020-09-24 22:40:39,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17df02fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:40:39, skipping insertion in model container [2020-09-24 22:40:39,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:40:38" (2/3) ... [2020-09-24 22:40:39,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17df02fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:40:39, skipping insertion in model container [2020-09-24 22:40:39,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:40:39" (3/3) ... [2020-09-24 22:40:39,217 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_7-2.c [2020-09-24 22:40:39,230 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:40:39,244 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:40:39,273 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:40:39,319 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:40:39,319 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:40:39,319 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:40:39,320 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:40:39,320 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:40:39,320 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:40:39,320 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:40:39,321 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:40:39,354 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 22:40:39,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 22:40:39,367 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:39,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:39,369 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:39,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:39,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 22:40:39,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:39,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188014939] [2020-09-24 22:40:39,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:39,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:39,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:39,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:39,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:40:39,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:39,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-24 22:40:39,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:39,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:39,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 22:40:39,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:39,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 22:40:39,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:39,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:39,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:39,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:39,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:39,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:40:39,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:39,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:39,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:39,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:39,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:39,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:39,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:39,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:39,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:40:39,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:39,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:40:39,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:39,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:40:39,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:40:39,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188014939] [2020-09-24 22:40:39,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:40:39,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:40:39,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299484005] [2020-09-24 22:40:39,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:40:39,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:39,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:40:39,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:40:39,937 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 22:40:40,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:40,069 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 22:40:40,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:40:40,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 22:40:40,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:40,094 INFO L225 Difference]: With dead ends: 44 [2020-09-24 22:40:40,094 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 22:40:40,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:40:40,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 22:40:40,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 22:40:40,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 22:40:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 22:40:40,185 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 22:40:40,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:40,186 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 22:40:40,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:40:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 22:40:40,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 22:40:40,191 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:40,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:40,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:40:40,192 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:40,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:40,193 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 22:40:40,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:40,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721118459] [2020-09-24 22:40:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:40,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:40,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:40,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:40,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 22:40:40,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:40,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-24 22:40:40,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:40,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:40,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:40:40,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:40,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:40,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:40,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:40,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:40,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:40,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:40,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:40:40,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:40,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:40,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:40,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:40,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:40,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:40,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:40,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:40:40,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:40:40,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:40,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:40,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:40,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:40:40,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721118459] [2020-09-24 22:40:40,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:40:40,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:40:40,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897464405] [2020-09-24 22:40:40,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:40:40,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:40,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:40:40,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:40:40,469 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 22:40:40,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:40,518 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 22:40:40,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:40:40,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 22:40:40,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:40,522 INFO L225 Difference]: With dead ends: 36 [2020-09-24 22:40:40,522 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 22:40:40,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:40:40,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 22:40:40,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 22:40:40,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 22:40:40,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 22:40:40,531 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 22:40:40,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:40,532 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 22:40:40,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:40:40,532 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 22:40:40,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:40:40,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:40,534 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:40,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:40:40,535 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:40,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:40,535 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 22:40:40,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:40,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972216631] [2020-09-24 22:40:40,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:40,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:40,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:40,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:40,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:42,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:42,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 22:40:42,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:40:42,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1850 [2020-09-24 22:40:42,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:42,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:40:42,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 22:40:42,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:40:42,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:42,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:42,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:42,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:42,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:42,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:42,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:42,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:42,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:42,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:42,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:42,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:42,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:42,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:42,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:42,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:42,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:40:42,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:42,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-09-24 22:40:42,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:40:42,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:40:42,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:42,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:42,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:42,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:42,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:42,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:42,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:42,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:40:42,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:42,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:42,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:40:42,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:42,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:42,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:40:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:42,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:42,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:42,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:42,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:42,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:40:42,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:40:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:42,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 22:40:42,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972216631] [2020-09-24 22:40:42,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:42,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:40:42,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777014397] [2020-09-24 22:40:42,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:40:42,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:42,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:40:42,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:40:42,873 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2020-09-24 22:40:43,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:43,001 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-24 22:40:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:40:43,002 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-24 22:40:43,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:43,004 INFO L225 Difference]: With dead ends: 52 [2020-09-24 22:40:43,004 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 22:40:43,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:40:43,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 22:40:43,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 22:40:43,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 22:40:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-24 22:40:43,013 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-24 22:40:43,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:43,014 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-24 22:40:43,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:40:43,014 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-24 22:40:43,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 22:40:43,016 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:43,017 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:43,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:40:43,017 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:43,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:43,018 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-24 22:40:43,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:43,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694306569] [2020-09-24 22:40:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:43,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:43,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:43,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:43,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:44,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:44,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:40:44,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:40:44,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-09-24 22:40:44,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:44,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:40:44,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:40:44,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:40:44,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:44,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:44,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:44,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:44,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:44,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:44,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:44,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:44,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:44,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:44,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:44,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:44,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:44,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:44,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:44,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:44,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 22:40:44,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:44,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:40:44,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:40:44,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:44,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:44,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:44,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:44,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:44,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:44,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:40:44,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:44,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:40:44,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:44,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:44,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:44,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:44,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:44,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:44,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:44,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:44,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:40:44,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:44,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:44,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:44,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:44,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:44,240 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 22:40:44,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694306569] [2020-09-24 22:40:44,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:44,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:40:44,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718922851] [2020-09-24 22:40:44,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:40:44,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:44,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:40:44,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:40:44,244 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 8 states. [2020-09-24 22:40:44,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:44,353 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-09-24 22:40:44,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:40:44,354 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-24 22:40:44,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:44,356 INFO L225 Difference]: With dead ends: 48 [2020-09-24 22:40:44,356 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 22:40:44,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:40:44,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 22:40:44,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-09-24 22:40:44,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 22:40:44,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-09-24 22:40:44,367 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2020-09-24 22:40:44,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:44,367 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-09-24 22:40:44,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:40:44,367 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-09-24 22:40:44,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 22:40:44,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:44,369 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:44,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:40:44,370 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:44,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:44,370 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 22:40:44,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:44,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975275727] [2020-09-24 22:40:44,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:44,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:44,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:44,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:44,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:44,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:46,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:46,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 22:40:46,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:40:46,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1711 [2020-09-24 22:40:46,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:46,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:40:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:40:46,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 22:40:46,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 22:40:46,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:46,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:46,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:46,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:46,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:46,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:40:46,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:46,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:46,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:46,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:46,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:46,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:46,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:46,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:46,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:40:46,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:40:46,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-09-24 22:40:46,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:40:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:40:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:40:46,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:46,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:46,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:46,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:46,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:46,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:46,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:40:46,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:46,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:46,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:46,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:40:46,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 22:40:46,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:46,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:46,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:46,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:46,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:46,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:40:46,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 22:40:46,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:46,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:46,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:40:46,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:40:46,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:46,809 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 22:40:46,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975275727] [2020-09-24 22:40:46,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:46,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:40:46,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765400043] [2020-09-24 22:40:46,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:40:46,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:46,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:40:46,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:40:46,811 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 9 states. [2020-09-24 22:40:46,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:46,960 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-09-24 22:40:46,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:40:46,961 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-24 22:40:46,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:46,963 INFO L225 Difference]: With dead ends: 76 [2020-09-24 22:40:46,963 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 22:40:46,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:40:46,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 22:40:46,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-24 22:40:46,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 22:40:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-09-24 22:40:46,975 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 35 [2020-09-24 22:40:46,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:46,975 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-09-24 22:40:46,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:40:46,975 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2020-09-24 22:40:46,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:40:46,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:46,978 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:46,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:40:46,978 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:46,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:46,979 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-24 22:40:46,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:46,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023203194] [2020-09-24 22:40:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:46,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:47,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:47,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:47,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:51,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:51,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:40:51,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:40:51,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 22:40:51,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:40:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:40:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 22:40:51,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:52,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:52,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:52,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:52,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:52,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:52,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:52,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:52,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:52,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:52,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:52,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:52,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:52,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:52,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:52,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:40:52,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:52,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-24 22:40:52,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:40:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 22:40:52,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:52,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:52,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:52,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:52,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:40:52,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:52,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 22:40:52,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:52,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:40:52,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:52,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:40:52,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:52,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:40:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:52,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:52,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:52,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:52,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:52,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:40:52,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:40:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:52,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:52,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:40:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:52,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:52,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:52,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:40:52,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:52,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:40:52,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:52,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:52,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:52,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:40:52,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:52,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:40:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:52,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:52,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:52,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:40:52,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:52,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:40:52,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:52,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:40:52,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:40:52,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:40:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-24 22:40:52,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023203194] [2020-09-24 22:40:52,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:40:52,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:40:52,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70445012] [2020-09-24 22:40:52,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:40:52,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:40:52,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:40:52,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:40:52,406 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand 11 states. [2020-09-24 22:40:52,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:40:52,575 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2020-09-24 22:40:52,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 22:40:52,576 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-24 22:40:52,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:40:52,578 INFO L225 Difference]: With dead ends: 56 [2020-09-24 22:40:52,578 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 22:40:52,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:40:52,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 22:40:52,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-09-24 22:40:52,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 22:40:52,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2020-09-24 22:40:52,588 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 52 [2020-09-24 22:40:52,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:40:52,589 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2020-09-24 22:40:52,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:40:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2020-09-24 22:40:52,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 22:40:52,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:40:52,593 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:40:52,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:40:52,594 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:40:52,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:40:52,594 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-24 22:40:52,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:40:52,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307580681] [2020-09-24 22:40:52,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:40:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:52,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:52,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:52,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:52,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:53,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:53,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:55,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:55,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:57,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:57,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 22:40:57,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:40:57,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 22:40:57,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:57,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:40:57,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:40:57,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 22:40:57,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:57,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:40:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:57,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:57,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:40:57,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:40:57,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:40:57,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:40:57,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:40:57,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:40:57,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:40:57,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:40:57,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:40:57,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:40:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:40:57,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:57,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:57,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:57,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:57,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:57,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:57,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:59,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:40:59,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:02,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:02,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 22:41:02,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:41:02,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 22:41:02,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:02,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:41:02,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:41:02,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 22:41:02,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:02,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:41:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:02,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:02,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:02,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:02,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:41:02,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:41:02,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-24 22:41:02,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:02,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:41:02,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:02,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:41:02,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:02,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:41:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:02,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:02,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:02,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:41:02,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:02,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:41:02,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:02,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:41:02,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:02,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:41:02,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:02,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:41:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:02,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:02,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:02,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:02,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:02,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:41:02,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:02,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:41:02,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:02,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:41:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:02,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:41:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:02,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:02,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:02,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:02,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:03,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:03,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:05,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:05,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:41:05,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:41:05,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2899 [2020-09-24 22:41:05,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:05,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:41:05,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:41:05,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:41:05,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:05,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:41:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:05,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:05,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:05,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:41:05,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:05,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 22:41:05,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:05,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:41:05,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:05,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:41:05,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:05,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:41:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:05,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:05,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:05,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:41:05,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:05,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:41:05,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:05,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:05,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:05,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:05,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:05,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:41:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:05,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:05,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:05,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:05,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:05,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:41:05,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:05,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:05,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:05,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:41:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:05,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:05,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:05,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:05,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:41:05,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:41:05,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 22:41:05,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:05,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:41:05,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:05,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:41:05,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 86 proven. 56 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-09-24 22:41:05,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307580681] [2020-09-24 22:41:05,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:41:05,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:41:05,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458023385] [2020-09-24 22:41:05,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:41:05,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:41:05,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:41:05,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:41:05,969 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand 9 states. [2020-09-24 22:41:06,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:41:06,239 INFO L93 Difference]: Finished difference Result 128 states and 191 transitions. [2020-09-24 22:41:06,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:41:06,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-24 22:41:06,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:41:06,243 INFO L225 Difference]: With dead ends: 128 [2020-09-24 22:41:06,243 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 22:41:06,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:41:06,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 22:41:06,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 74. [2020-09-24 22:41:06,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 22:41:06,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 103 transitions. [2020-09-24 22:41:06,285 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 103 transitions. Word has length 87 [2020-09-24 22:41:06,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:41:06,286 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 103 transitions. [2020-09-24 22:41:06,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:41:06,286 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 103 transitions. [2020-09-24 22:41:06,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 22:41:06,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:41:06,294 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:41:06,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:41:06,294 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:41:06,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:41:06,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1505694539, now seen corresponding path program 4 times [2020-09-24 22:41:06,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:41:06,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392981853] [2020-09-24 22:41:06,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:41:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:06,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:06,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:07,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:07,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:11,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:11,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:11,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 22:41:11,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:41:11,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:41:11,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:11,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:41:11,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:41:11,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 22:41:11,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:11,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:41:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:11,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:11,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:11,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:41:11,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:11,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:41:11,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:11,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:11,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:11,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:11,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:11,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:41:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:11,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:11,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:11,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:11,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:11,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:13,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:13,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 22:41:13,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:41:13,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2145 [2020-09-24 22:41:13,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:41:13,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:41:13,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 22:41:13,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:13,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:41:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:13,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:13,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:13,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:13,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:13,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:13,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:17,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:17,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:41:17,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:41:17,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3509 [2020-09-24 22:41:17,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:17,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:41:17,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:17,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 22:41:17,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:17,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:41:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:17,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:17,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:17,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:41:17,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:17,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 22:41:17,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:17,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:41:17,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:17,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:41:17,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:17,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:41:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:17,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:17,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:17,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:41:17,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:17,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:41:17,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:17,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:17,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:17,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:17,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:17,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:41:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:17,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:17,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:17,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:17,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:17,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:41:17,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:17,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:17,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:17,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:17,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:17,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:41:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:17,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:17,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:17,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:41:17,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:17,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:41:17,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:17,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:41:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:41:17,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:17,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 22:41:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:17,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:17,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:17,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:41:17,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:17,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:41:17,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:17,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:41:17,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:41:17,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:41:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 71 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-09-24 22:41:17,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392981853] [2020-09-24 22:41:17,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:41:17,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:41:17,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471692198] [2020-09-24 22:41:17,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:41:17,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:41:17,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:41:17,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:41:17,188 INFO L87 Difference]: Start difference. First operand 74 states and 103 transitions. Second operand 7 states. [2020-09-24 22:41:17,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:41:17,292 INFO L93 Difference]: Finished difference Result 148 states and 210 transitions. [2020-09-24 22:41:17,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:41:17,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-09-24 22:41:17,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:41:17,295 INFO L225 Difference]: With dead ends: 148 [2020-09-24 22:41:17,295 INFO L226 Difference]: Without dead ends: 80 [2020-09-24 22:41:17,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:41:17,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-24 22:41:17,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2020-09-24 22:41:17,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 22:41:17,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 102 transitions. [2020-09-24 22:41:17,308 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 102 transitions. Word has length 70 [2020-09-24 22:41:17,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:41:17,308 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 102 transitions. [2020-09-24 22:41:17,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:41:17,308 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 102 transitions. [2020-09-24 22:41:17,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-24 22:41:17,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:41:17,310 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:41:17,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:41:17,311 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:41:17,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:41:17,311 INFO L82 PathProgramCache]: Analyzing trace with hash 62566115, now seen corresponding path program 5 times [2020-09-24 22:41:17,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:41:17,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364671633] [2020-09-24 22:41:17,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:41:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:17,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:17,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:17,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:17,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:17,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:17,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:18,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:20,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:20,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:22,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:22,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 22:41:22,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:41:22,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 22:41:22,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:22,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:41:22,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:41:22,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 22:41:22,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:22,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:41:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:22,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:22,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:22,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:41:22,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:22,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:41:22,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:22,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:22,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:41:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:22,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:22,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:22,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:22,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:22,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:22,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:22,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:22,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:22,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:22,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:23,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:24,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:24,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:24,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:24,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:27,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:27,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 22:41:27,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-24 22:41:27,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 22:41:27,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:41:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:41:27,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 22:41:27,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:27,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:41:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:27,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:27,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:27,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:28,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:28,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:41:28,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:41:28,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1204 [2020-09-24 22:41:28,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:41:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:28,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 22:41:28,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:28,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:41:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:28,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:28,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:28,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:41:28,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:28,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:41:28,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:28,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:41:28,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:28,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:41:28,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:28,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:41:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:28,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:28,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:28,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:41:28,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:28,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:41:28,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:28,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:28,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:41:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:28,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:28,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:28,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:28,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:28,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:41:28,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:28,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:41:28,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:28,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:41:28,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:28,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:41:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:28,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:28,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:28,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:41:28,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:28,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:41:28,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:28,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:41:28,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:28,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:41:28,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:28,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 22:41:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:28,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:28,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:28,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:28,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:29,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:29,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:29,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:29,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:30,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:30,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:41:30,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 22:41:30,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1922 [2020-09-24 22:41:30,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:30,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:41:30,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:41:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:41:30,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:30,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:41:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:30,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:30,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:30,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:30,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:30,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:41:30,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:41:30,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-24 22:41:30,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:30,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:41:30,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:30,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:41:30,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:30,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:41:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:30,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:30,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:30,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:41:30,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:30,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:41:30,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:30,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:41:30,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:30,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:41:30,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:30,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:41:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:30,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:30,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:30,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:30,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:30,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:41:30,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:30,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:41:30,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:41:30,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:41:30,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:30,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:41:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:30,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:30,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:41:30,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:41:30,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:41:30,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:41:30,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:41:30,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:41:30,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:41:30,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:41:30,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:41:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 166 proven. 56 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-09-24 22:41:30,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364671633] [2020-09-24 22:41:30,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:41:30,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 22:41:30,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457254720] [2020-09-24 22:41:30,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 22:41:30,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:41:30,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 22:41:30,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:41:30,976 INFO L87 Difference]: Start difference. First operand 74 states and 102 transitions. Second operand 12 states. [2020-09-24 22:41:31,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:41:31,351 INFO L93 Difference]: Finished difference Result 161 states and 262 transitions. [2020-09-24 22:41:31,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 22:41:31,353 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-09-24 22:41:31,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:41:31,359 INFO L225 Difference]: With dead ends: 161 [2020-09-24 22:41:31,362 INFO L226 Difference]: Without dead ends: 84 [2020-09-24 22:41:31,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2020-09-24 22:41:31,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-24 22:41:31,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2020-09-24 22:41:31,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 22:41:31,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2020-09-24 22:41:31,389 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 104 [2020-09-24 22:41:31,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:41:31,389 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2020-09-24 22:41:31,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 22:41:31,390 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2020-09-24 22:41:31,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 22:41:31,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:41:31,391 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:41:31,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:41:31,391 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:41:31,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:41:31,392 INFO L82 PathProgramCache]: Analyzing trace with hash 866676589, now seen corresponding path program 6 times [2020-09-24 22:41:31,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:41:31,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76333748] [2020-09-24 22:41:31,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:41:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:41:31,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:31,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:31,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:41:31,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking...