/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_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:10:27,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:10:27,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:10:27,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:10:27,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:10:27,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:10:27,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:10:27,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:10:27,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:10:27,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:10:27,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:10:27,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:10:27,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:10:27,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:10:27,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:10:27,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:10:27,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:10:27,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:10:27,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:10:27,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:10:27,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:10:27,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:10:27,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:10:27,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:10:27,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:10:27,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:10:27,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:10:27,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:10:27,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:10:27,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:10:27,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:10:27,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:10:27,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:10:27,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:10:27,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:10:27,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:10:27,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:10:27,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:10:27,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:10:27,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:10:27,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:10:27,851 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 03:10:27,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:10:27,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:10:27,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:10:27,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:10:27,899 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:10:27,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:10:27,899 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:10:27,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:10:27,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:10:27,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:10:27,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:10:27,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:10:27,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:10:27,902 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:10:27,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:10:27,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:10:27,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:10:27,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:10:27,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:10:27,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:10:27,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:10:27,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:10:27,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:10:27,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:10:27,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:10:27,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:10:27,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:10:27,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:10:27,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:10:27,905 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 03:10:28,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:10:28,348 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:10:28,353 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:10:28,355 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:10:28,355 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:10:28,356 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-25 03:10:28,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a25830c30/6db4d3ca7cab4589b229ce0b9b8e0d13/FLAG728149f67 [2020-09-25 03:10:28,949 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:10:28,950 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-25 03:10:28,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a25830c30/6db4d3ca7cab4589b229ce0b9b8e0d13/FLAG728149f67 [2020-09-25 03:10:29,316 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a25830c30/6db4d3ca7cab4589b229ce0b9b8e0d13 [2020-09-25 03:10:29,329 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:10:29,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:10:29,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:10:29,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:10:29,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:10:29,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:10:29" (1/1) ... [2020-09-25 03:10:29,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54535c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29, skipping insertion in model container [2020-09-25 03:10:29,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:10:29" (1/1) ... [2020-09-25 03:10:29,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:10:29,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:10:29,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:10:29,594 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:10:29,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:10:29,626 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:10:29,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29 WrapperNode [2020-09-25 03:10:29,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:10:29,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:10:29,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:10:29,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:10:29,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29" (1/1) ... [2020-09-25 03:10:29,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29" (1/1) ... [2020-09-25 03:10:29,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29" (1/1) ... [2020-09-25 03:10:29,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29" (1/1) ... [2020-09-25 03:10:29,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29" (1/1) ... [2020-09-25 03:10:29,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29" (1/1) ... [2020-09-25 03:10:29,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29" (1/1) ... [2020-09-25 03:10:29,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:10:29,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:10:29,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:10:29,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:10:29,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29" (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 03:10:29,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:10:29,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:10:29,812 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 03:10:29,813 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:10:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:10:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:10:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 03:10:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:10:29,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:10:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:10:30,140 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:10:30,140 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:10:30,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:10:30 BoogieIcfgContainer [2020-09-25 03:10:30,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:10:30,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:10:30,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:10:30,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:10:30,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:10:29" (1/3) ... [2020-09-25 03:10:30,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9aefb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:10:30, skipping insertion in model container [2020-09-25 03:10:30,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:29" (2/3) ... [2020-09-25 03:10:30,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9aefb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:10:30, skipping insertion in model container [2020-09-25 03:10:30,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:10:30" (3/3) ... [2020-09-25 03:10:30,154 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2020-09-25 03:10:30,164 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:10:30,172 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:10:30,192 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:10:30,222 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:10:30,222 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:10:30,223 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:10:30,223 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:10:30,223 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:10:30,223 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:10:30,223 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:10:30,224 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:10:30,243 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 03:10:30,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 03:10:30,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:30,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:30,254 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:30,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:30,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 03:10:30,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:30,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615409430] [2020-09-25 03:10:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:30,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:10:30,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:30,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 03:10:30,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:30,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:30,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:30,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:30,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:10:30,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:30,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:30,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:30,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:10:30,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:30,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:30,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:30,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:30,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:30,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:30,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:30,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 03:10:30,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:30,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:30,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:30,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:30,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:30,614 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 03:10:30,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615409430] [2020-09-25 03:10:30,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:30,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:10:30,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25843427] [2020-09-25 03:10:30,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:10:30,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:30,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:10:30,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:10:30,643 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 03:10:30,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:30,766 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 03:10:30,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:10:30,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 03:10:30,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:30,781 INFO L225 Difference]: With dead ends: 44 [2020-09-25 03:10:30,781 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 03:10:30,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:10:30,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 03:10:30,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 03:10:30,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 03:10:30,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 03:10:30,841 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 03:10:30,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:30,842 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 03:10:30,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:10:30,842 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 03:10:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 03:10:30,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:30,845 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 03:10:30,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:10:30,846 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:30,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:30,846 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 03:10:30,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:30,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833166468] [2020-09-25 03:10:30,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:30,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:10:30,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:30,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 03:10:30,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:30,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:30,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:30,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:30,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:30,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:30,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:30,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:30,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:10:30,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:30,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:30,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:30,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:30,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:31,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:31,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:31,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 03:10:31,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:31,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:31,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:31,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:31,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:31,075 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 03:10:31,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833166468] [2020-09-25 03:10:31,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:31,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:10:31,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815225440] [2020-09-25 03:10:31,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:10:31,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:31,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:10:31,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:10:31,080 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 03:10:31,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:31,147 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 03:10:31,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:10:31,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 03:10:31,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:31,149 INFO L225 Difference]: With dead ends: 36 [2020-09-25 03:10:31,149 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 03:10:31,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:10:31,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 03:10:31,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 03:10:31,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 03:10:31,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 03:10:31,159 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 03:10:31,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:31,159 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 03:10:31,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:10:31,159 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 03:10:31,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:10:31,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:31,161 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 03:10:31,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:10:31,162 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:31,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:31,162 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 03:10:31,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:31,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835340127] [2020-09-25 03:10:31,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:31,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:31,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:10:31,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:31,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-09-25 03:10:31,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:10:31,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:10:31,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:31,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:31,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:31,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:31,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:10:31,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:31,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:31,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:31,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:31,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:31,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:31,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:32,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:32,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:32,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-09-25 03:10:32,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:32,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:32,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:10:32,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:32,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:32,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:32,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:32,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:32,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:10:32,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:32,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:32,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:32,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:32,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:32,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:32,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:32,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:32,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:32,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:10:32,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:32,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:32,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:32,222 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 03:10:32,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835340127] [2020-09-25 03:10:32,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:32,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:10:32,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413023820] [2020-09-25 03:10:32,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:10:32,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:32,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:10:32,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:10:32,225 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-25 03:10:32,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:32,312 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-09-25 03:10:32,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:10:32,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 03:10:32,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:32,314 INFO L225 Difference]: With dead ends: 62 [2020-09-25 03:10:32,315 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 03:10:32,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:10:32,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 03:10:32,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-25 03:10:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 03:10:32,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 03:10:32,326 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 33 [2020-09-25 03:10:32,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:32,327 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 03:10:32,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:10:32,327 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 03:10:32,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:10:32,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:32,329 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 03:10:32,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:10:32,330 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:32,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:32,330 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 03:10:32,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:32,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637487415] [2020-09-25 03:10:32,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:32,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:32,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:10:32,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:32,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-09-25 03:10:32,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:32,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:32,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:32,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:10:32,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:32,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:32,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:32,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:32,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:32,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:10:32,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:32,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:32,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:32,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:32,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:32,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:32,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:32,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:33,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:33,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:33,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-09-25 03:10:33,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:33,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:33,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:33,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:33,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:33,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:33,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:33,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:33,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:10:33,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:33,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:33,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:33,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:33,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:33,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:33,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:33,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:10:33,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:33,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:33,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:33,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 03:10:33,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637487415] [2020-09-25 03:10:33,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:33,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:10:33,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596294952] [2020-09-25 03:10:33,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:10:33,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:33,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:10:33,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:10:33,140 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-25 03:10:33,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:33,220 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 03:10:33,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:10:33,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 03:10:33,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:33,222 INFO L225 Difference]: With dead ends: 50 [2020-09-25 03:10:33,223 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 03:10:33,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:10:33,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 03:10:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-09-25 03:10:33,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 03:10:33,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 03:10:33,232 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 34 [2020-09-25 03:10:33,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:33,233 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 03:10:33,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:10:33,233 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 03:10:33,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 03:10:33,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:33,235 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 03:10:33,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:10:33,236 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:33,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:33,236 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 03:10:33,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:33,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016971749] [2020-09-25 03:10:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:33,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:33,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:10:33,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:33,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-09-25 03:10:33,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:33,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:33,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:33,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:10:33,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:33,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:33,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:33,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:33,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:33,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:33,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:33,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:33,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:33,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:33,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:34,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:10:34,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:34,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-09-25 03:10:34,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:34,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:34,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:34,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:10:34,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:34,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:34,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:34,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:34,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:34,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 03:10:34,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:34,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:34,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:34,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:10:34,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:34,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:34,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:34,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:34,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:34,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:10:34,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:34,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:34,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:34,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 03:10:34,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016971749] [2020-09-25 03:10:34,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:34,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:10:34,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017251390] [2020-09-25 03:10:34,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:10:34,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:34,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:10:34,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:10:34,337 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-25 03:10:34,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:34,453 INFO L93 Difference]: Finished difference Result 94 states and 129 transitions. [2020-09-25 03:10:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:10:34,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 03:10:34,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:34,457 INFO L225 Difference]: With dead ends: 94 [2020-09-25 03:10:34,457 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 03:10:34,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:10:34,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 03:10:34,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-09-25 03:10:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 03:10:34,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2020-09-25 03:10:34,473 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 70 transitions. Word has length 35 [2020-09-25 03:10:34,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:34,474 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 70 transitions. [2020-09-25 03:10:34,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:10:34,474 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 70 transitions. [2020-09-25 03:10:34,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:10:34,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:34,479 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 03:10:34,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:10:34,479 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:34,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:34,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 2 times [2020-09-25 03:10:34,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:34,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487952795] [2020-09-25 03:10:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:34,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:39,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:39,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:10:39,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:10:39,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:10:39,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:39,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:39,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:39,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:10:39,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:39,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:39,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:39,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:39,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:39,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:39,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:39,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:39,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:39,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:39,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:39,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:39,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:39,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:39,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:40,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:40,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:42,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:10:42,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:10:42,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3160 [2020-09-25 03:10:42,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:42,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:42,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:42,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:10:42,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:42,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:42,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:42,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:42,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:42,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:42,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-25 03:10:42,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:42,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:42,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:42,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:42,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:43,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:43,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:43,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:43,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:43,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:10:43,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:43,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:43,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:43,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:43,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:43,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:43,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:10:43,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:43,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:43,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:43,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:10:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:43,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:43,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:43,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:10:43,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:43,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:43,094 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 03:10:43,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487952795] [2020-09-25 03:10:43,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:43,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:10:43,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224743669] [2020-09-25 03:10:43,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:10:43,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:43,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:10:43,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:10:43,098 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. Second operand 9 states. [2020-09-25 03:10:43,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:43,266 INFO L93 Difference]: Finished difference Result 88 states and 119 transitions. [2020-09-25 03:10:43,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 03:10:43,267 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 03:10:43,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:43,274 INFO L225 Difference]: With dead ends: 88 [2020-09-25 03:10:43,274 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 03:10:43,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:10:43,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 03:10:43,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2020-09-25 03:10:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 03:10:43,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 105 transitions. [2020-09-25 03:10:43,300 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 105 transitions. Word has length 51 [2020-09-25 03:10:43,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:43,301 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 105 transitions. [2020-09-25 03:10:43,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:10:43,301 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 105 transitions. [2020-09-25 03:10:43,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 03:10:43,309 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:43,310 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 03:10:43,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:10:43,310 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:43,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:43,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1161869885, now seen corresponding path program 3 times [2020-09-25 03:10:43,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:43,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128328240] [2020-09-25 03:10:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:43,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:43,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:44,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:44,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:46,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:48,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 03:10:48,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 03:10:48,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 03:10:48,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:48,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:10:48,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:10:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 03:10:48,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:48,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:48,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:48,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:48,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:48,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:48,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:48,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:48,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:48,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:48,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:48,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:48,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:50,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:50,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:50,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:53,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 03:10:53,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 03:10:53,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 03:10:53,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:53,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:10:53,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 03:10:53,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 03:10:53,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:53,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:53,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:53,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:53,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:53,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 03:10:53,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:53,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:53,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:53,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:10:53,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:53,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:53,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:53,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:53,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:53,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:10:53,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:53,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:53,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:53,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:10:53,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:53,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:53,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:53,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:53,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:53,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:10:53,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:53,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:53,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:53,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:10:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:53,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:54,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:10:54,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:10:54,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1117 [2020-09-25 03:10:54,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:54,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:54,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:54,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:10:54,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:54,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:54,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:54,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:54,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:54,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:10:54,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:54,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:54,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:54,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:54,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:54,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:54,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:54,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 03:10:54,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:54,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:54,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:10:54,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:54,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:54,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:54,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:54,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:54,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 03:10:54,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:54,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:54,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:54,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:10:54,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:54,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:54,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:54,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:54,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:54,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:10:54,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:54,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:55,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:55,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:55,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:55,021 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 84 proven. 68 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-09-25 03:10:55,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128328240] [2020-09-25 03:10:55,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:55,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 03:10:55,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531725337] [2020-09-25 03:10:55,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 03:10:55,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:55,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 03:10:55,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:10:55,026 INFO L87 Difference]: Start difference. First operand 76 states and 105 transitions. Second operand 10 states. [2020-09-25 03:10:55,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:55,341 INFO L93 Difference]: Finished difference Result 179 states and 288 transitions. [2020-09-25 03:10:55,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:10:55,342 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-09-25 03:10:55,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:55,346 INFO L225 Difference]: With dead ends: 179 [2020-09-25 03:10:55,347 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 03:10:55,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:10:55,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 03:10:55,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 75. [2020-09-25 03:10:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 03:10:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 99 transitions. [2020-09-25 03:10:55,380 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 99 transitions. Word has length 87 [2020-09-25 03:10:55,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:55,380 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 99 transitions. [2020-09-25 03:10:55,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 03:10:55,381 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 99 transitions. [2020-09-25 03:10:55,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 03:10:55,386 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:55,386 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:55,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:10:55,386 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:55,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:55,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1607002557, now seen corresponding path program 4 times [2020-09-25 03:10:55,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:55,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590840082] [2020-09-25 03:10:55,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:55,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:55,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:55,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:55,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:55,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:55,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:55,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:56,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:56,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:00,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 03:11:00,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-25 03:11:00,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 03:11:00,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:00,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:11:00,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:11:00,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 03:11:00,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:00,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:00,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:00,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:00,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:00,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:00,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:00,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:00,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:00,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:00,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:00,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:00,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:05,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:05,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 03:11:05,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 03:11:05,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 03:11:05,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 03:11:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:11:05,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 03:11:05,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:05,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:05,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:05,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:05,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:05,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:05,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:05,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:07,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 03:11:07,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:11:07,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1988 [2020-09-25 03:11:07,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:07,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:11:07,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:07,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:11:07,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:07,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:07,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:07,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:11:07,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:11:07,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 03:11:07,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:11:07,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:07,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:07,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:07,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:07,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:07,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:07,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:07,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:07,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:07,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:07,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:07,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:07,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:11:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:07,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:07,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:07,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:07,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:11:07,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:07,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:07,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:07,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:07,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:11:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:07,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:07,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:07,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:07,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:11:07,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:07,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:07,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 03:11:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:07,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:08,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:12,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:12,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 03:11:12,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 03:11:12,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 03:11:12,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:12,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 03:11:12,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:11:12,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 03:11:12,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:12,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:12,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:12,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:12,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:13,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 03:11:13,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:11:13,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 849 [2020-09-25 03:11:13,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:13,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:11:13,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:13,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:11:13,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:13,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:13,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:13,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:11:13,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:11:13,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 03:11:13,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:13,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:11:13,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:13,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:11:13,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:13,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:13,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:13,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:13,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:13,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:11:13,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:13,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:13,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:13,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:13,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:13,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:11:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:13,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:13,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:13,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:13,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:11:13,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:13,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:13,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:13,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:13,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:13,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:11:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:13,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:13,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:13,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:13,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:11:13,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:13,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:11:13,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:13,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:11:13,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:13,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 03:11:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:13,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:13,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:13,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:13,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:11:13,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:13,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:13,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:11:13,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 170 proven. 102 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-09-25 03:11:14,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590840082] [2020-09-25 03:11:14,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:14,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 03:11:14,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573552210] [2020-09-25 03:11:14,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 03:11:14,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:14,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 03:11:14,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:11:14,005 INFO L87 Difference]: Start difference. First operand 75 states and 99 transitions. Second operand 16 states. [2020-09-25 03:11:14,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:14,230 INFO L93 Difference]: Finished difference Result 125 states and 173 transitions. [2020-09-25 03:11:14,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:11:14,231 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 119 [2020-09-25 03:11:14,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:14,232 INFO L225 Difference]: With dead ends: 125 [2020-09-25 03:11:14,233 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 03:11:14,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-09-25 03:11:14,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 03:11:14,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-25 03:11:14,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 03:11:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2020-09-25 03:11:14,257 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 119 [2020-09-25 03:11:14,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:14,260 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2020-09-25 03:11:14,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 03:11:14,260 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2020-09-25 03:11:14,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 03:11:14,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:14,262 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:14,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:11:14,263 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:14,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:14,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 5 times [2020-09-25 03:11:14,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:14,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042334256] [2020-09-25 03:11:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:14,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:16,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:16,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:19,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 03:11:19,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 03:11:19,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 03:11:19,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:19,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 03:11:19,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:11:19,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 03:11:19,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:19,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:19,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:19,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:19,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:19,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:19,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:19,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:19,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:19,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:19,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:19,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:19,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:20,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:20,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:20,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:20,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:21,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:21,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:21,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:21,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:21,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:21,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking...