/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:02:34,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:02:34,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:02:34,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:02:34,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:02:34,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:02:34,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:02:34,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:02:34,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:02:34,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:02:34,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:02:34,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:02:34,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:02:34,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:02:34,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:02:34,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:02:34,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:02:34,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:02:34,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:02:34,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:02:34,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:02:34,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:02:34,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:02:34,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:02:34,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:02:34,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:02:34,800 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:02:34,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:02:34,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:02:34,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:02:34,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:02:34,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:02:34,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:02:34,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:02:34,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:02:34,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:02:34,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:02:34,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:02:34,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:02:34,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:02:34,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:02:34,810 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:02:34,835 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:02:34,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:02:34,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:02:34,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:02:34,837 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:02:34,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:02:34,838 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:02:34,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:02:34,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:02:34,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:02:34,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:02:34,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:02:34,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:02:34,839 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:02:34,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:02:34,840 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:02:34,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:02:34,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:02:34,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:02:34,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:02:34,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:02:34,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:02:34,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:02:34,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:02:34,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:02:34,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:02:34,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:02:34,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:02:34,842 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:02:34,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 02:02:35,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:02:35,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:02:35,357 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:02:35,359 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:02:35,359 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:02:35,360 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-25 02:02:35,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24553aacc/b4d6114fedce4043bff299795b50b2fb/FLAG4e9ab888a [2020-09-25 02:02:35,999 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:02:36,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-25 02:02:36,007 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24553aacc/b4d6114fedce4043bff299795b50b2fb/FLAG4e9ab888a [2020-09-25 02:02:36,346 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24553aacc/b4d6114fedce4043bff299795b50b2fb [2020-09-25 02:02:36,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:02:36,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:02:36,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:02:36,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:02:36,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:02:36,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:02:36" (1/1) ... [2020-09-25 02:02:36,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:36, skipping insertion in model container [2020-09-25 02:02:36,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:02:36" (1/1) ... [2020-09-25 02:02:36,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:02:36,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:02:36,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:02:36,627 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:02:36,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:02:36,666 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:02:36,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:36 WrapperNode [2020-09-25 02:02:36,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:02:36,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:02:36,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:02:36,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:02:36,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:36" (1/1) ... [2020-09-25 02:02:36,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:36" (1/1) ... [2020-09-25 02:02:36,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:36" (1/1) ... [2020-09-25 02:02:36,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:36" (1/1) ... [2020-09-25 02:02:36,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:36" (1/1) ... [2020-09-25 02:02:36,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:36" (1/1) ... [2020-09-25 02:02:36,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:36" (1/1) ... [2020-09-25 02:02:36,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:02:36,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:02:36,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:02:36,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:02:36,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:02:36,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:02:36,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:02:36,881 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 02:02:36,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:02:36,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:02:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:02:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 02:02:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:02:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:02:36,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:02:37,089 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:02:37,089 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:02:37,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:02:37 BoogieIcfgContainer [2020-09-25 02:02:37,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:02:37,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:02:37,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:02:37,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:02:37,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:02:36" (1/3) ... [2020-09-25 02:02:37,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2226e1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:02:37, skipping insertion in model container [2020-09-25 02:02:37,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:02:36" (2/3) ... [2020-09-25 02:02:37,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2226e1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:02:37, skipping insertion in model container [2020-09-25 02:02:37,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:02:37" (3/3) ... [2020-09-25 02:02:37,104 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-2.c [2020-09-25 02:02:37,117 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:02:37,129 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:02:37,154 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:02:37,233 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:02:37,233 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:02:37,233 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:02:37,234 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:02:37,234 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:02:37,234 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:02:37,234 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:02:37,234 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:02:37,277 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 02:02:37,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 02:02:37,284 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:37,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:37,286 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:37,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:37,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 02:02:37,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:37,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159804191] [2020-09-25 02:02:37,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:37,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:37,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:37,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:37,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:02:37,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:02:37,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-25 02:02:37,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:02:37,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:02:37,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:37,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:37,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:37,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:37,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:37,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:02:37,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:37,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:37,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:37,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:37,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:37,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:37,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:37,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:37,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:37,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:37,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:02:37,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:37,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:37,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:37,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:37,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:02:37,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159804191] [2020-09-25 02:02:37,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:02:37,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:02:37,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371544124] [2020-09-25 02:02:37,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:02:37,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:37,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:02:37,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:02:37,872 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 02:02:37,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:37,982 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 02:02:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:02:37,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 02:02:37,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:38,007 INFO L225 Difference]: With dead ends: 44 [2020-09-25 02:02:38,007 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 02:02:38,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:02:38,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 02:02:38,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 02:02:38,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:02:38,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:02:38,069 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 02:02:38,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:38,070 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:02:38,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:02:38,071 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:02:38,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 02:02:38,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:38,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:38,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:02:38,074 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:38,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:38,075 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 02:02:38,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:38,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959243662] [2020-09-25 02:02:38,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:38,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:38,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:38,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:38,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 02:02:38,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:02:38,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 02:02:38,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:02:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:38,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:38,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:38,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:38,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:38,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:38,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:38,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:02:38,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:38,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:38,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:38,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:38,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:38,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:38,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:38,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:02:38,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:38,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:02:38,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:38,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:38,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:02:38,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959243662] [2020-09-25 02:02:38,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:02:38,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:02:38,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611612938] [2020-09-25 02:02:38,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:02:38,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:38,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:02:38,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:02:38,347 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 02:02:38,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:38,381 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 02:02:38,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:02:38,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 02:02:38,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:38,383 INFO L225 Difference]: With dead ends: 36 [2020-09-25 02:02:38,383 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:02:38,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:02:38,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:02:38,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 02:02:38,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:02:38,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:02:38,393 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 02:02:38,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:38,393 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:02:38,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:02:38,394 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:02:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 02:02:38,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:38,396 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:38,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:02:38,396 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:38,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:38,397 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 02:02:38,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:38,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340644380] [2020-09-25 02:02:38,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:38,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:38,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:38,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:38,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:40,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:40,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 02:02:40,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:02:40,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2038 [2020-09-25 02:02:40,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:40,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:02:40,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:40,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:40,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:40,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:40,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:40,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:40,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:40,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:40,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:02:40,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:40,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:40,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:40,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:40,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:40,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:40,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 02:02:40,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:40,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 02:02:40,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:40,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:40,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:02:40,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:40,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:40,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:40,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:40,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:40,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:40,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:40,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:02:40,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:40,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:40,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:02:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:40,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:40,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:40,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:40,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:40,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:02:40,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:40,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:40,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:02:40,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:40,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:02:40,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340644380] [2020-09-25 02:02:40,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:40,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:02:40,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023713880] [2020-09-25 02:02:40,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:02:40,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:40,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:02:40,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:02:40,640 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 02:02:40,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:40,723 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-25 02:02:40,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:02:40,724 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 02:02:40,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:40,726 INFO L225 Difference]: With dead ends: 52 [2020-09-25 02:02:40,726 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:02:40,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:02:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:02:40,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 02:02:40,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 02:02:40,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 02:02:40,735 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-25 02:02:40,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:40,738 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 02:02:40,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:02:40,739 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 02:02:40,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 02:02:40,740 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:40,740 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:40,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:02:40,742 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:40,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:40,742 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 02:02:40,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:40,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563313165] [2020-09-25 02:02:40,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:40,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:40,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:40,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:41,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:41,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:02:41,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:02:41,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-25 02:02:41,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:41,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:02:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:02:41,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:41,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:41,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:41,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:41,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:41,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:41,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:02:41,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:41,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:41,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:41,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:41,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:41,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:41,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:41,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:42,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:42,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:42,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:02:42,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-25 02:02:42,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:42,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:02:42,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:42,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:02:42,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:42,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:42,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:42,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:42,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:42,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:42,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:02:42,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:42,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:42,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:42,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:42,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:42,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:42,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:42,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:42,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:42,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:42,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:02:42,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:42,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:42,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:42,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:42,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:42,149 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:02:42,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563313165] [2020-09-25 02:02:42,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:42,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:02:42,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571938687] [2020-09-25 02:02:42,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:02:42,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:42,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:02:42,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:02:42,153 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-09-25 02:02:42,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:42,221 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-09-25 02:02:42,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:02:42,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-25 02:02:42,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:42,223 INFO L225 Difference]: With dead ends: 42 [2020-09-25 02:02:42,223 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 02:02:42,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:02:42,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 02:02:42,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-25 02:02:42,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 02:02:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 02:02:42,233 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 34 [2020-09-25 02:02:42,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:42,233 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 02:02:42,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:02:42,234 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 02:02:42,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:02:42,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:42,236 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:42,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:02:42,236 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:42,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:42,237 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 02:02:42,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:42,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915801541] [2020-09-25 02:02:42,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:42,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:42,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:42,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:42,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:42,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:43,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:43,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 02:02:43,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:02:43,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1559 [2020-09-25 02:02:43,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:02:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:43,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:02:43,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:43,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:43,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:43,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:43,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:43,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:43,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:02:43,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:43,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:43,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:43,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:43,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:43,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:43,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:43,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:43,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:43,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:44,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:44,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:02:44,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:02:44,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-09-25 02:02:44,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:02:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:02:44,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:02:44,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:44,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:44,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:44,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:44,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:44,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:44,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:02:44,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:44,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:44,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:44,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:02:44,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:44,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:44,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:44,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:44,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:44,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:44,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:02:44,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:02:44,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:44,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:44,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:44,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:44,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:44,384 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:02:44,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915801541] [2020-09-25 02:02:44,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:44,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:02:44,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009066965] [2020-09-25 02:02:44,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:02:44,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:44,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:02:44,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:02:44,387 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states. [2020-09-25 02:02:44,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:44,524 INFO L93 Difference]: Finished difference Result 74 states and 96 transitions. [2020-09-25 02:02:44,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:02:44,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 02:02:44,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:44,527 INFO L225 Difference]: With dead ends: 74 [2020-09-25 02:02:44,527 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:02:44,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:02:44,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:02:44,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 02:02:44,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:02:44,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 02:02:44,538 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-25 02:02:44,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:44,538 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 02:02:44,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:02:44,538 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 02:02:44,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:02:44,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:44,541 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:44,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:02:44,541 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:44,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:44,542 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-25 02:02:44,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:44,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402742048] [2020-09-25 02:02:44,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:44,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:44,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:44,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:45,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:49,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:49,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:02:49,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:02:49,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 02:02:49,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:49,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:02:49,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:49,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:02:49,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:49,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:49,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:49,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:49,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:49,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:49,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:02:49,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:49,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:49,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:02:49,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:49,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:49,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:49,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:51,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:51,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:02:51,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:02:51,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1788 [2020-09-25 02:02:51,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:02:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:51,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:02:51,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:51,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:51,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:51,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:51,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:51,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:02:51,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-25 02:02:51,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:02:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:51,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:02:51,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:51,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:51,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:51,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:51,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:51,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:51,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 02:02:51,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:51,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:51,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:51,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:02:51,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:51,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:51,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:51,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:51,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:51,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:51,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:02:51,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:51,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:51,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:51,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:51,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:51,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:02:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:51,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:51,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:51,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:51,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:51,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:02:51,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:51,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:51,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:51,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:51,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 02:02:51,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402742048] [2020-09-25 02:02:51,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:51,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:02:51,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037124] [2020-09-25 02:02:51,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:02:51,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:51,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:02:51,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:02:51,725 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-25 02:02:51,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:51,825 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2020-09-25 02:02:51,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:02:51,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 02:02:51,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:51,829 INFO L225 Difference]: With dead ends: 60 [2020-09-25 02:02:51,830 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 02:02:51,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:02:51,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 02:02:51,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-09-25 02:02:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 02:02:51,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2020-09-25 02:02:51,850 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 52 [2020-09-25 02:02:51,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:51,854 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2020-09-25 02:02:51,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:02:51,854 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2020-09-25 02:02:51,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 02:02:51,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:51,860 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:51,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:02:51,861 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:51,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:51,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1108116753, now seen corresponding path program 3 times [2020-09-25 02:02:51,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:51,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134118801] [2020-09-25 02:02:51,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:51,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:51,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:51,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:52,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:52,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:52,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:52,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:52,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:52,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:52,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:53,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:56,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:56,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:56,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 02:02:56,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 02:02:56,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-25 02:02:56,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:02:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:56,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:02:56,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:56,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:56,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:56,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:56,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:56,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:56,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:02:56,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:56,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:56,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:56,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:56,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:56,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:56,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:57,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:57,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:57,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:57,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:57,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:59,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:59,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:59,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:59,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:59,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:59,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:59,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:59,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:59,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:59,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:01,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:01,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 02:03:01,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-09-25 02:03:01,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 02:03:01,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:01,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:01,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 02:03:01,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:03:01,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:01,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:01,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:02,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:03,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:03,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 02:03:03,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:03:03,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1623 [2020-09-25 02:03:03,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:03,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:03,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:03,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:03,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:03,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:03,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:03,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:03:03,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:03,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:03,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:03,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:03,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:03,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:03,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:03,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:03,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:03,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:03,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:03:03,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:03,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:03,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:03,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:03,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:03,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:03,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:03,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:03:03,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:03,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:03,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:03,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:03,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:03,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:03,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:03,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:03,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:03:03,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:03,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:03,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:03,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:03,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:03,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 02:03:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:03,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:03,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:03,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:03,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:04,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:08,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:08,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 02:03:08,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 02:03:08,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:03:08,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 02:03:08,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:03:08,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:08,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:08,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:08,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:08,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:08,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:09,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:09,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 02:03:09,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:03:09,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 671 [2020-09-25 02:03:09,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:09,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:09,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:03:09,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 02:03:09,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:09,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:09,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:09,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:09,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:09,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:09,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:09,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:03:09,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 02:03:09,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:09,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:09,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:09,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:03:09,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:09,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:09,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:09,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:09,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:09,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:09,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:03:09,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 02:03:09,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:09,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:03:09,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:09,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:03:09,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:09,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:09,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:09,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:09,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:09,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:09,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:03:09,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:09,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:09,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:09,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:09,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:09,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:09,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:09,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:09,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:09,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:03:09,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:09,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:09,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 02:03:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:09,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:09,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:09,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:09,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:09,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:03:09,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:09,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:09,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 02:03:09,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:09,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 206 proven. 26 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-09-25 02:03:09,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134118801] [2020-09-25 02:03:09,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:09,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:03:09,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143142560] [2020-09-25 02:03:09,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:03:09,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:09,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:03:09,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:03:09,773 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand 9 states. [2020-09-25 02:03:09,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:09,959 INFO L93 Difference]: Finished difference Result 91 states and 123 transitions. [2020-09-25 02:03:09,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 02:03:09,959 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2020-09-25 02:03:09,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:09,961 INFO L225 Difference]: With dead ends: 91 [2020-09-25 02:03:09,962 INFO L226 Difference]: Without dead ends: 51 [2020-09-25 02:03:09,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-25 02:03:09,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-25 02:03:09,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-25 02:03:09,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 02:03:09,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-09-25 02:03:09,988 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 121 [2020-09-25 02:03:09,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:09,988 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-09-25 02:03:09,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:03:09,988 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-09-25 02:03:09,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 02:03:09,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:09,991 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:09,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:03:09,993 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:09,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:09,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 4 times [2020-09-25 02:03:09,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:09,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889695378] [2020-09-25 02:03:09,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:10,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:10,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:10,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:10,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:10,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:10,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:10,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:10,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:10,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:11,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:11,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:15,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:15,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 02:03:15,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:03:15,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 02:03:15,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:03:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:15,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:03:15,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:15,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:15,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:15,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:15,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:15,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:15,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:15,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:15,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:15,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:15,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:15,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:15,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:15,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:15,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:15,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:15,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:16,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:17,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:18,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:20,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 02:03:20,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 02:03:20,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 02:03:20,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:20,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 02:03:20,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:03:20,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:20,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:20,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:20,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:03:20,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:20,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:03:20,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:20,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:20,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:20,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:20,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:20,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:20,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:20,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:20,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:20,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:03:20,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:20,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:20,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:20,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:20,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:20,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:20,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:20,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:20,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:20,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:20,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:20,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:20,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:20,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:20,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:20,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:20,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:20,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:03:20,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:20,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:20,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:20,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:20,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:20,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:20,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:20,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:20,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:20,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:03:20,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:20,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:20,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:20,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:20,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:20,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:03:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:20,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:20,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:22,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:22,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 02:03:22,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:03:22,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2592 [2020-09-25 02:03:22,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:22,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:22,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:03:22,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:03:22,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:22,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:22,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:22,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:22,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:22,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:22,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:23,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:23,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:03:23,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:03:23,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 879 [2020-09-25 02:03:23,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:23,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:03:23,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:23,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:03:23,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:23,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:23,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:23,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:23,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:23,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:23,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:03:23,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:03:23,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-25 02:03:23,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:03:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:03:23,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:24,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:03:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:24,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:24,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:24,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:24,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:03:24,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:24,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:24,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:03:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:24,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:24,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:03:24,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:24,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:03:24,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:24,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:03:24,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:24,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:03:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:24,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:24,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:24,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:24,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:03:24,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:24,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:03:24,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:24,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:24,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:24,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:03:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:24,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:24,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:03:24,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:24,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:03:24,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:24,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:03:24,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:03:24,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:03:24,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:24,175 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 223 proven. 24 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2020-09-25 02:03:24,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889695378] [2020-09-25 02:03:24,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:03:24,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 02:03:24,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639627685] [2020-09-25 02:03:24,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:03:24,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:03:24,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:03:24,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:03:24,178 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 11 states. [2020-09-25 02:03:24,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:03:24,623 INFO L93 Difference]: Finished difference Result 103 states and 139 transitions. [2020-09-25 02:03:24,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 02:03:24,624 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 123 [2020-09-25 02:03:24,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:03:24,628 INFO L225 Difference]: With dead ends: 103 [2020-09-25 02:03:24,628 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 02:03:24,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-09-25 02:03:24,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 02:03:24,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-09-25 02:03:24,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 02:03:24,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2020-09-25 02:03:24,648 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 123 [2020-09-25 02:03:24,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:03:24,649 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2020-09-25 02:03:24,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:03:24,650 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2020-09-25 02:03:24,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 02:03:24,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:03:24,655 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:03:24,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:03:24,655 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:03:24,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:03:24,656 INFO L82 PathProgramCache]: Analyzing trace with hash 866676589, now seen corresponding path program 5 times [2020-09-25 02:03:24,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:03:24,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282212875] [2020-09-25 02:03:24,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:03:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:24,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:24,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:26,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:29,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:29,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 02:03:29,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:03:29,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 02:03:29,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:03:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:03:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:03:29,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:29,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:03:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:29,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:29,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:03:29,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:03:29,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:03:29,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:03:29,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:03:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:03:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:03:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:03:29,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:03:29,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:03:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:03:29,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:29,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:29,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:29,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:03:30,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking...