/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:09:18,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:09:18,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:09:18,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:09:18,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:09:18,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:09:18,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:09:18,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:09:18,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:09:19,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:09:19,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:09:19,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:09:19,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:09:19,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:09:19,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:09:19,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:09:19,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:09:19,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:09:19,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:09:19,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:09:19,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:09:19,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:09:19,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:09:19,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:09:19,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:09:19,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:09:19,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:09:19,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:09:19,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:09:19,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:09:19,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:09:19,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:09:19,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:09:19,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:09:19,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:09:19,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:09:19,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:09:19,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:09:19,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:09:19,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:09:19,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:09:19,053 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:09:19,108 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:09:19,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:09:19,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:09:19,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:09:19,110 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:09:19,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:09:19,111 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:09:19,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:09:19,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:09:19,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:09:19,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:09:19,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:09:19,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:09:19,114 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:09:19,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:09:19,114 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:09:19,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:09:19,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:09:19,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:09:19,115 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:09:19,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:09:19,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:09:19,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:09:19,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:09:19,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:09:19,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:09:19,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:09:19,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:09:19,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:09:19,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-09-25 03:09:19,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:09:19,616 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:09:19,621 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:09:19,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:09:19,625 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:09:19,626 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_15-2.c [2020-09-25 03:09:19,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c3eae916/a432976d98fb4a708c19ccc1bea3748b/FLAG0907f8926 [2020-09-25 03:09:20,256 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:09:20,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_15-2.c [2020-09-25 03:09:20,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c3eae916/a432976d98fb4a708c19ccc1bea3748b/FLAG0907f8926 [2020-09-25 03:09:20,617 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c3eae916/a432976d98fb4a708c19ccc1bea3748b [2020-09-25 03:09:20,633 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:09:20,639 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:09:20,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:09:20,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:09:20,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:09:20,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:09:20" (1/1) ... [2020-09-25 03:09:20,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f84b4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:20, skipping insertion in model container [2020-09-25 03:09:20,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:09:20" (1/1) ... [2020-09-25 03:09:20,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:09:20,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:09:20,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:09:20,924 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:09:20,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:09:20,956 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:09:20,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:20 WrapperNode [2020-09-25 03:09:20,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:09:20,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:09:20,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:09:20,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:09:20,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:20" (1/1) ... [2020-09-25 03:09:20,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:20" (1/1) ... [2020-09-25 03:09:20,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:20" (1/1) ... [2020-09-25 03:09:20,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:20" (1/1) ... [2020-09-25 03:09:20,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:20" (1/1) ... [2020-09-25 03:09:20,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:20" (1/1) ... [2020-09-25 03:09:20,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:20" (1/1) ... [2020-09-25 03:09:20,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:09:20,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:09:20,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:09:20,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:09:20,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:09:21,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:09:21,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:09:21,149 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 03:09:21,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:09:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:09:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:09:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 03:09:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:09:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:09:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:09:21,370 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:09:21,370 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:09:21,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:09:21 BoogieIcfgContainer [2020-09-25 03:09:21,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:09:21,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:09:21,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:09:21,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:09:21,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:09:20" (1/3) ... [2020-09-25 03:09:21,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c4aa95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:09:21, skipping insertion in model container [2020-09-25 03:09:21,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:20" (2/3) ... [2020-09-25 03:09:21,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c4aa95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:09:21, skipping insertion in model container [2020-09-25 03:09:21,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:09:21" (3/3) ... [2020-09-25 03:09:21,386 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_15-2.c [2020-09-25 03:09:21,399 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:09:21,410 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:09:21,446 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:09:21,487 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:09:21,487 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:09:21,487 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:09:21,488 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:09:21,488 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:09:21,488 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:09:21,488 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:09:21,489 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:09:21,516 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 03:09:21,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 03:09:21,527 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:21,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:21,529 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:21,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:21,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 03:09:21,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:21,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462176506] [2020-09-25 03:09:21,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:21,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:21,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:09:21,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:21,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-25 03:09:21,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:21,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:21,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 03:09:21,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:21,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 03:09:21,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:21,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:21,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:21,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:21,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:21,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:09:21,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:21,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:21,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:21,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:21,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:22,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:22,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:22,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:22,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:22,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:09:22,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:22,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:09:22,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:09:22,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462176506] [2020-09-25 03:09:22,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:22,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:09:22,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156899352] [2020-09-25 03:09:22,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:09:22,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:22,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:09:22,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:09:22,082 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 03:09:22,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:22,176 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 03:09:22,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:09:22,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 03:09:22,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:22,193 INFO L225 Difference]: With dead ends: 44 [2020-09-25 03:09:22,193 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 03:09:22,198 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 [2020-09-25 03:09:22,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 03:09:22,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 03:09:22,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 03:09:22,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 03:09:22,258 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 03:09:22,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:22,258 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 03:09:22,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:09:22,259 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 03:09:22,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 03:09:22,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:22,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:22,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:09:22,263 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:22,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:22,263 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 03:09:22,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:22,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776333676] [2020-09-25 03:09:22,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:22,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:22,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:09:22,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:22,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 03:09:22,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:22,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:22,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:09:22,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:22,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:22,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:22,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:22,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:22,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:22,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:09:22,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:22,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:22,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:22,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:22,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:22,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:22,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 03:09:22,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:22,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:22,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:22,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:09:22,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776333676] [2020-09-25 03:09:22,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:22,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:09:22,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902106387] [2020-09-25 03:09:22,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:09:22,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:22,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:09:22,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:09:22,562 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 03:09:22,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:22,601 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 03:09:22,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:09:22,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 03:09:22,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:22,603 INFO L225 Difference]: With dead ends: 36 [2020-09-25 03:09:22,603 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 03:09:22,605 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 [2020-09-25 03:09:22,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 03:09:22,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 03:09:22,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 03:09:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 03:09:22,613 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 03:09:22,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:22,614 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 03:09:22,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:09:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 03:09:22,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:09:22,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:22,616 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:22,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:09:22,616 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:22,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:22,617 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 03:09:22,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:22,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888440643] [2020-09-25 03:09:22,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:22,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:22,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:24,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:24,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:09:24,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:09:24,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1929 [2020-09-25 03:09:24,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:24,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:09:24,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:09:24,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:24,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:24,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:24,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:24,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:24,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:24,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:09:24,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:24,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:24,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:24,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:24,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:24,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:24,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:24,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:24,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:24,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:09:24,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:24,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-25 03:09:24,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:24,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:24,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:24,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 03:09:24,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:25,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:25,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:25,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:25,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:25,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:09:25,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:09:25,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:25,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:09:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:25,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:25,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:25,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:25,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:09:25,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:25,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:25,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:25,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:25,063 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 03:09:25,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888440643] [2020-09-25 03:09:25,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:25,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:09:25,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934709304] [2020-09-25 03:09:25,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:09:25,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:25,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:09:25,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:09:25,067 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-25 03:09:25,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:25,181 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-09-25 03:09:25,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:09:25,181 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 03:09:25,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:25,184 INFO L225 Difference]: With dead ends: 48 [2020-09-25 03:09:25,184 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 03:09:25,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:09:25,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 03:09:25,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-09-25 03:09:25,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 03:09:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 03:09:25,195 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-25 03:09:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:25,196 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 03:09:25,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:09:25,196 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 03:09:25,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:09:25,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:25,199 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:25,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:09:25,199 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:25,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:25,200 INFO L82 PathProgramCache]: Analyzing trace with hash 795081563, now seen corresponding path program 1 times [2020-09-25 03:09:25,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:25,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541392749] [2020-09-25 03:09:25,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:25,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:28,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:09:28,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:09:28,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3366 [2020-09-25 03:09:28,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:09:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:09:28,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:28,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:28,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:28,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:28,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:28,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:09:28,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:28,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:28,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:28,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:28,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:28,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:28,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:29,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:29,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:29,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:09:29,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-25 03:09:29,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:29,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:09:29,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:29,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:29,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:29,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:29,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:29,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:29,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 03:09:29,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:29,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:29,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:29,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:09:29,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:29,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:09:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:29,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:29,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:29,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:29,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:29,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 03:09:29,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:29,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:29,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:29,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 03:09:29,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541392749] [2020-09-25 03:09:29,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:29,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:09:29,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532157239] [2020-09-25 03:09:29,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:09:29,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:29,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:09:29,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:09:29,742 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 8 states. [2020-09-25 03:09:29,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:29,861 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2020-09-25 03:09:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:09:29,862 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-25 03:09:29,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:29,865 INFO L225 Difference]: With dead ends: 66 [2020-09-25 03:09:29,865 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 03:09:29,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:09:29,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 03:09:29,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 44. [2020-09-25 03:09:29,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 03:09:29,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-25 03:09:29,879 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 34 [2020-09-25 03:09:29,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:29,879 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-25 03:09:29,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:09:29,879 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-25 03:09:29,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:09:29,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:29,882 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:29,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:09:29,882 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:29,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:29,883 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 2 times [2020-09-25 03:09:29,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:29,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086337323] [2020-09-25 03:09:29,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:29,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:29,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:30,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:30,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:30,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:09:30,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:30,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 940 [2020-09-25 03:09:30,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:30,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:09:30,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:30,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:30,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:30,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:30,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:30,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:30,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:30,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:30,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:30,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:30,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:30,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:30,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:30,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:30,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:31,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:31,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:31,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:31,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-25 03:09:31,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:31,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:31,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:31,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:31,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:31,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:31,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:31,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:31,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:31,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:31,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:09:31,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:31,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:31,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:31,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:31,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:31,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:31,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:31,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:31,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:09:31,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:31,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:31,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:31,196 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:09:31,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086337323] [2020-09-25 03:09:31,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:31,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 03:09:31,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685678798] [2020-09-25 03:09:31,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:09:31,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:31,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:09:31,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:09:31,200 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 6 states. [2020-09-25 03:09:31,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:31,314 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2020-09-25 03:09:31,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:09:31,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-25 03:09:31,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:31,318 INFO L225 Difference]: With dead ends: 62 [2020-09-25 03:09:31,318 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 03:09:31,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:09:31,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 03:09:31,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 44. [2020-09-25 03:09:31,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 03:09:31,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-25 03:09:31,349 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 34 [2020-09-25 03:09:31,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:31,350 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-25 03:09:31,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:09:31,350 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-25 03:09:31,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 03:09:31,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:31,356 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:31,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:09:31,357 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:31,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:31,357 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 03:09:31,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:31,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911815902] [2020-09-25 03:09:31,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:31,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:31,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:31,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:31,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:31,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:09:33,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:09:33,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1669 [2020-09-25 03:09:33,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:33,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:09:33,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:09:33,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:33,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:33,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:33,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:33,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:09:33,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:33,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:33,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:33,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:09:33,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:33,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:09:33,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:33,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 494 [2020-09-25 03:09:33,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:33,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:33,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:33,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:33,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:33,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:33,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:33,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:09:33,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:33,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:33,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:33,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:33,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:33,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:33,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:33,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 03:09:33,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:33,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:33,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:33,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 03:09:33,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911815902] [2020-09-25 03:09:33,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:33,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:09:33,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973501307] [2020-09-25 03:09:33,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:09:33,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:33,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:09:33,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:09:33,695 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 8 states. [2020-09-25 03:09:33,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:33,810 INFO L93 Difference]: Finished difference Result 68 states and 94 transitions. [2020-09-25 03:09:33,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:09:33,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-25 03:09:33,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:33,814 INFO L225 Difference]: With dead ends: 68 [2020-09-25 03:09:33,814 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 03:09:33,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:09:33,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 03:09:33,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2020-09-25 03:09:33,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 03:09:33,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 70 transitions. [2020-09-25 03:09:33,838 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 70 transitions. Word has length 35 [2020-09-25 03:09:33,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:33,838 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 70 transitions. [2020-09-25 03:09:33,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:09:33,839 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 70 transitions. [2020-09-25 03:09:33,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:09:33,846 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:33,848 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:33,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:09:33,849 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:33,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:33,849 INFO L82 PathProgramCache]: Analyzing trace with hash -538497119, now seen corresponding path program 2 times [2020-09-25 03:09:33,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:33,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753023180] [2020-09-25 03:09:33,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:33,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:38,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 03:09:38,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 03:09:38,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:09:38,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:38,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:09:38,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:09:38,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 03:09:38,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:38,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:38,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:38,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:38,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:38,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:38,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:38,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:38,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:38,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:38,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:38,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:43,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 03:09:43,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:09:43,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4645 [2020-09-25 03:09:43,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:43,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:09:43,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:43,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:09:43,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:43,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:43,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:43,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:43,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:43,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:09:43,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:43,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:43,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:43,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:43,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:43,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:43,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:44,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:09:44,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:44,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-09-25 03:09:44,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:44,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:09:44,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:44,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:44,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:44,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:44,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:44,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:09:44,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:44,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:44,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:44,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:44,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:44,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:44,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:44,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:44,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:44,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:09:44,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:44,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:44,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:44,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:44,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 03:09:44,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753023180] [2020-09-25 03:09:44,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:44,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:09:44,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008873762] [2020-09-25 03:09:44,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:09:44,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:44,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:09:44,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:09:44,161 INFO L87 Difference]: Start difference. First operand 48 states and 70 transitions. Second operand 12 states. [2020-09-25 03:09:44,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:44,430 INFO L93 Difference]: Finished difference Result 88 states and 122 transitions. [2020-09-25 03:09:44,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 03:09:44,432 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-25 03:09:44,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:44,436 INFO L225 Difference]: With dead ends: 88 [2020-09-25 03:09:44,436 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 03:09:44,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-09-25 03:09:44,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 03:09:44,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 54. [2020-09-25 03:09:44,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 03:09:44,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 80 transitions. [2020-09-25 03:09:44,462 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 80 transitions. Word has length 53 [2020-09-25 03:09:44,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:44,463 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 80 transitions. [2020-09-25 03:09:44,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:09:44,463 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 80 transitions. [2020-09-25 03:09:44,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:09:44,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:44,467 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:44,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:09:44,469 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:44,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:44,470 INFO L82 PathProgramCache]: Analyzing trace with hash -154171110, now seen corresponding path program 3 times [2020-09-25 03:09:44,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:44,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417777700] [2020-09-25 03:09:44,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:44,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:45,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:49,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:49,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 03:09:49,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:09:49,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:09:49,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:49,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:09:49,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:09:49,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:09:49,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:49,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:49,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:49,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:49,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:49,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:49,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:49,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:49,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:49,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:49,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:49,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:49,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:49,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:49,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:49,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:50,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:09:50,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:09:50,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 754 [2020-09-25 03:09:50,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:09:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:09:50,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:50,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:50,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:50,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:50,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:50,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:09:50,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:50,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:50,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:50,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:50,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:50,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:50,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:50,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:50,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:50,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 03:09:50,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:50,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:50,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:50,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:50,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:50,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:50,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:50,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:50,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:50,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:09:50,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:50,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:50,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:50,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:50,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:50,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:50,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:50,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:50,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:50,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:09:50,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:50,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:50,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:50,523 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 03:09:50,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417777700] [2020-09-25 03:09:50,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:50,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:09:50,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712163320] [2020-09-25 03:09:50,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:09:50,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:50,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:09:50,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:09:50,527 INFO L87 Difference]: Start difference. First operand 54 states and 80 transitions. Second operand 12 states. [2020-09-25 03:09:50,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:50,770 INFO L93 Difference]: Finished difference Result 108 states and 170 transitions. [2020-09-25 03:09:50,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 03:09:50,771 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-25 03:09:50,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:50,774 INFO L225 Difference]: With dead ends: 108 [2020-09-25 03:09:50,774 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 03:09:50,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-09-25 03:09:50,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 03:09:50,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 70. [2020-09-25 03:09:50,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 03:09:50,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 120 transitions. [2020-09-25 03:09:50,804 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 120 transitions. Word has length 52 [2020-09-25 03:09:50,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:50,806 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 120 transitions. [2020-09-25 03:09:50,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:09:50,807 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 120 transitions. [2020-09-25 03:09:50,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:09:50,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:50,811 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:50,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:09:50,812 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:50,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:50,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 4 times [2020-09-25 03:09:50,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:50,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136685969] [2020-09-25 03:09:50,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:50,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:51,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:51,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:53,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:55,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:09:55,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:09:55,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 03:09:55,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:55,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:55,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:55,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:09:55,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:55,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:55,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:55,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:55,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:55,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:55,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:55,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:55,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:55,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:55,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:55,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:55,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:56,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:56,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:56,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:58,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:09:58,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:09:58,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2613 [2020-09-25 03:09:58,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:58,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:58,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:58,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:09:58,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:58,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:58,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:58,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:09:58,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:58,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 03:09:58,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:58,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:58,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:58,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:58,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:58,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:58,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:58,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:58,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:58,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:09:58,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:58,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:58,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:58,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:09:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:58,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:58,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:58,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:58,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:09:58,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:58,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:58,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:58,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:58,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:09:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:58,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:58,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:58,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:58,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:09:58,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:58,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:58,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:58,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:58,762 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 29 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 03:09:58,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136685969] [2020-09-25 03:09:58,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:58,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:09:58,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287579823] [2020-09-25 03:09:58,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:09:58,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:58,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:09:58,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:09:58,764 INFO L87 Difference]: Start difference. First operand 70 states and 120 transitions. Second operand 9 states. [2020-09-25 03:09:58,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:58,871 INFO L93 Difference]: Finished difference Result 162 states and 324 transitions. [2020-09-25 03:09:58,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:09:58,872 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 03:09:58,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:58,874 INFO L225 Difference]: With dead ends: 162 [2020-09-25 03:09:58,874 INFO L226 Difference]: Without dead ends: 98 [2020-09-25 03:09:58,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:09:58,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-25 03:09:58,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 74. [2020-09-25 03:09:58,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 03:09:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 125 transitions. [2020-09-25 03:09:58,893 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 125 transitions. Word has length 51 [2020-09-25 03:09:58,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:58,893 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 125 transitions. [2020-09-25 03:09:58,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:09:58,894 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 125 transitions. [2020-09-25 03:09:58,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 03:09:58,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:58,896 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:58,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:09:58,896 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:58,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:58,897 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 5 times [2020-09-25 03:09:58,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:58,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107671282] [2020-09-25 03:09:58,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:58,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:58,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:01,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:01,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:03,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 03:10:03,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:10:03,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 03:10:03,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:03,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:10:03,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:10:03,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 03:10:03,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:03,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:03,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:03,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:03,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:03,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:03,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:03,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:03,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:03,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:03,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:03,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:03,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:03,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:07,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:07,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:07,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:07,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:08,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:08,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:08,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 03:10:08,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 03:10:08,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 03:10:08,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:08,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:10:08,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:10:08,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 03:10:08,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:08,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:08,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:08,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:09,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:09,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:09,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:09,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 03:10:09,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:09,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:09,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:09,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:10:09,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:09,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:09,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:09,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:09,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:09,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:09,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:10:09,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:09,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:09,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:09,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:09,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:09,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:09,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:09,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:09,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:09,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:09,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:10:09,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:09,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:09,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:09,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:09,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:10:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:09,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:09,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:09,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:09,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:09,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:09,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:11,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:11,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:10:11,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:10:11,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2730 [2020-09-25 03:10:11,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:11,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:11,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:11,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:10:11,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:11,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:11,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:11,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:11,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:12,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:12,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:12,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:12,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-25 03:10:12,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:10:12,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:12,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:12,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:12,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:12,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:12,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:12,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:12,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:10:12,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:12,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:12,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:12,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:10:12,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:12,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:12,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:12,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:12,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:12,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:12,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:10:12,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:12,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:12,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:12,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:12,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:12,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:10:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:12,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:12,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:12,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:12,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:12,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:10:12,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:12,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:12,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:12,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:12,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 78 proven. 74 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-09-25 03:10:12,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107671282] [2020-09-25 03:10:12,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:12,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:10:12,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431904208] [2020-09-25 03:10:12,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:10:12,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:12,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:10:12,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:10:12,298 INFO L87 Difference]: Start difference. First operand 74 states and 125 transitions. Second operand 10 states. [2020-09-25 03:10:12,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:12,616 INFO L93 Difference]: Finished difference Result 175 states and 336 transitions. [2020-09-25 03:10:12,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 03:10:12,616 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-09-25 03:10:12,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:12,620 INFO L225 Difference]: With dead ends: 175 [2020-09-25 03:10:12,620 INFO L226 Difference]: Without dead ends: 107 [2020-09-25 03:10:12,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:10:12,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-25 03:10:12,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 89. [2020-09-25 03:10:12,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-25 03:10:12,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 125 transitions. [2020-09-25 03:10:12,655 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 125 transitions. Word has length 87 [2020-09-25 03:10:12,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:12,655 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 125 transitions. [2020-09-25 03:10:12,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:10:12,656 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 125 transitions. [2020-09-25 03:10:12,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 03:10:12,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:12,660 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:12,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:10:12,665 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:12,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:12,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1437641953, now seen corresponding path program 6 times [2020-09-25 03:10:12,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:12,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611853805] [2020-09-25 03:10:12,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:12,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:12,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:12,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:12,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:12,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:13,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:13,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:13,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking...