/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:38:42,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:38:42,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:38:42,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:38:42,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:38:42,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:38:42,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:38:42,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:38:42,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:38:42,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:38:42,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:38:42,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:38:42,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:38:42,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:38:42,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:38:42,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:38:42,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:38:42,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:38:42,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:38:42,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:38:42,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:38:42,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:38:42,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:38:42,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:38:42,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:38:42,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:38:42,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:38:42,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:38:42,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:38:42,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:38:42,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:38:42,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:38:42,750 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:38:42,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:38:42,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:38:42,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:38:42,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:38:42,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:38:42,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:38:42,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:38:42,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:38:42,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:38:42,781 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:38:42,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:38:42,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:38:42,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:38:42,787 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:38:42,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:38:42,787 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:38:42,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:38:42,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:38:42,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:38:42,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:38:42,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:38:42,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:38:42,788 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:38:42,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:38:42,789 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:38:42,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:38:42,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:38:42,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:38:42,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:38:42,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:38:42,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:38:42,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:38:42,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:38:42,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:38:42,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:38:42,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:38:42,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:38:42,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:38:42,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:38:43,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:38:43,295 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:38:43,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:38:43,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:38:43,303 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:38:43,305 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_15-1.c [2020-09-24 22:38:43,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f55898075/25729b1ffceb42d081a8ba9418e1f75f/FLAGc0168a369 [2020-09-24 22:38:43,910 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:38:43,911 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_15-1.c [2020-09-24 22:38:43,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f55898075/25729b1ffceb42d081a8ba9418e1f75f/FLAGc0168a369 [2020-09-24 22:38:44,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f55898075/25729b1ffceb42d081a8ba9418e1f75f [2020-09-24 22:38:44,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:38:44,287 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:38:44,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:38:44,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:38:44,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:38:44,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:38:44" (1/1) ... [2020-09-24 22:38:44,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176ea22d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:44, skipping insertion in model container [2020-09-24 22:38:44,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:38:44" (1/1) ... [2020-09-24 22:38:44,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:38:44,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:38:44,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:38:44,561 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:38:44,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:38:44,599 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:38:44,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:44 WrapperNode [2020-09-24 22:38:44,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:38:44,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:38:44,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:38:44,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:38:44,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:44" (1/1) ... [2020-09-24 22:38:44,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:44" (1/1) ... [2020-09-24 22:38:44,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:44" (1/1) ... [2020-09-24 22:38:44,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:44" (1/1) ... [2020-09-24 22:38:44,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:44" (1/1) ... [2020-09-24 22:38:44,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:44" (1/1) ... [2020-09-24 22:38:44,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:44" (1/1) ... [2020-09-24 22:38:44,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:38:44,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:38:44,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:38:44,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:38:44,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:38:44,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:38:44,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:38:44,807 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 22:38:44,807 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:38:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:38:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:38:44,807 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 22:38:44,809 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:38:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:38:44,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:38:45,037 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:38:45,038 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:38:45,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:38:45 BoogieIcfgContainer [2020-09-24 22:38:45,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:38:45,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:38:45,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:38:45,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:38:45,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:38:44" (1/3) ... [2020-09-24 22:38:45,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3611c6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:38:45, skipping insertion in model container [2020-09-24 22:38:45,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:44" (2/3) ... [2020-09-24 22:38:45,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3611c6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:38:45, skipping insertion in model container [2020-09-24 22:38:45,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:38:45" (3/3) ... [2020-09-24 22:38:45,054 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_15-1.c [2020-09-24 22:38:45,072 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:38:45,082 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:38:45,111 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:38:45,156 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:38:45,156 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:38:45,156 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:38:45,156 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:38:45,157 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:38:45,157 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:38:45,157 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:38:45,157 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:38:45,184 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 22:38:45,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 22:38:45,195 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:45,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:45,197 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:45,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:45,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 22:38:45,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:45,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866303957] [2020-09-24 22:38:45,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:45,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:45,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:45,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:38:45,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:45,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 22:38:45,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:38:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:38:45,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:38:45,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:45,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:45,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:45,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:45,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:45,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:38:45,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:45,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:45,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:38:45,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:45,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:45,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:45,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:45,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:45,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:38:45,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:45,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:45,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:45,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:45,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:38:45,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866303957] [2020-09-24 22:38:45,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:45,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:38:45,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366563176] [2020-09-24 22:38:45,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:38:45,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:45,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:38:45,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:38:45,602 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 22:38:45,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:45,729 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 22:38:45,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:38:45,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 22:38:45,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:45,747 INFO L225 Difference]: With dead ends: 44 [2020-09-24 22:38:45,747 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 22:38:45,754 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 [2020-09-24 22:38:45,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 22:38:45,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 22:38:45,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 22:38:45,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 22:38:45,815 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 22:38:45,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:45,816 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 22:38:45,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:38:45,816 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 22:38:45,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 22:38:45,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:45,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:45,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:38:45,820 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:45,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:45,820 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 22:38:45,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:45,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138827021] [2020-09-24 22:38:45,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:45,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:45,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:45,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 22:38:45,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:45,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-24 22:38:45,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:38:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:45,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:45,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:45,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:45,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:45,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:45,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:45,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:38:45,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:45,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:45,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:45,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:45,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:45,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:45,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:46,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:46,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:46,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:46,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 22:38:46,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:46,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:46,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:46,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:38:46,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138827021] [2020-09-24 22:38:46,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:46,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:38:46,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321350741] [2020-09-24 22:38:46,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:38:46,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:46,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:38:46,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:38:46,070 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 22:38:46,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:46,155 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 22:38:46,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:38:46,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 22:38:46,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:46,158 INFO L225 Difference]: With dead ends: 36 [2020-09-24 22:38:46,158 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 22:38:46,159 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 [2020-09-24 22:38:46,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 22:38:46,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 22:38:46,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 22:38:46,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 22:38:46,168 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 22:38:46,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:46,169 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 22:38:46,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:38:46,169 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 22:38:46,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:38:46,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:46,171 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:46,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:38:46,172 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:46,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:46,172 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 22:38:46,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:46,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794169767] [2020-09-24 22:38:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:46,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:46,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:46,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:46,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:46,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 22:38:46,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:46,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-09-24 22:38:46,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:46,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:46,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 22:38:46,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:46,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:38:46,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:46,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:46,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:46,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:46,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:46,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:38:46,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:46,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:46,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:46,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:46,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:46,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:46,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:46,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:46,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:38:46,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:46,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 22:38:46,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:46,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:46,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:38:46,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:46,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:46,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:46,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:46,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:46,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:46,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:46,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:38:46,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:46,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:46,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:38:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:46,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:46,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:46,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:46,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:46,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:38:46,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:46,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:46,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:38:46,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:46,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:46,935 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 22:38:46,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794169767] [2020-09-24 22:38:46,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:46,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 22:38:46,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905865369] [2020-09-24 22:38:46,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:38:46,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:46,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:38:46,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:38:46,939 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-24 22:38:47,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:47,052 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-24 22:38:47,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:38:47,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 22:38:47,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:47,054 INFO L225 Difference]: With dead ends: 52 [2020-09-24 22:38:47,055 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 22:38:47,056 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 [2020-09-24 22:38:47,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 22:38:47,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 22:38:47,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 22:38:47,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-24 22:38:47,066 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-24 22:38:47,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:47,066 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-24 22:38:47,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:38:47,067 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-24 22:38:47,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 22:38:47,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:47,069 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:47,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:38:47,070 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:47,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:47,071 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-24 22:38:47,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:47,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448401273] [2020-09-24 22:38:47,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:47,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:47,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:47,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:47,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:38:47,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:47,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-09-24 22:38:47,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:47,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:47,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:38:47,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:38:47,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:47,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:47,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:47,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:47,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:47,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:47,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:38:47,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:47,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:47,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:47,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:47,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:47,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:47,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:47,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:47,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:47,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:38:47,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:47,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-09-24 22:38:47,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:47,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:47,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:47,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:38:47,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:47,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:47,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:47,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:47,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:47,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:47,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:38:47,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:38:47,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:47,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:47,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:47,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:47,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:47,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:47,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:47,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:47,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:38:47,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:47,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:47,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:47,927 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 22:38:47,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448401273] [2020-09-24 22:38:47,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:47,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:38:47,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181202194] [2020-09-24 22:38:47,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:38:47,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:47,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:38:47,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:38:47,930 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-24 22:38:48,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:48,023 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-09-24 22:38:48,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:38:48,024 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-24 22:38:48,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:48,026 INFO L225 Difference]: With dead ends: 42 [2020-09-24 22:38:48,026 INFO L226 Difference]: Without dead ends: 36 [2020-09-24 22:38:48,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:38:48,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-24 22:38:48,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-24 22:38:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 22:38:48,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-24 22:38:48,036 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 34 [2020-09-24 22:38:48,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:48,036 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-24 22:38:48,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:38:48,037 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-24 22:38:48,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 22:38:48,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:48,039 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:48,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:38:48,040 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:48,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:48,041 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 22:38:48,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:48,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155129920] [2020-09-24 22:38:48,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:48,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:48,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:48,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:48,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:48,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:48,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 22:38:48,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:38:48,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-09-24 22:38:48,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:38:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:38:48,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:48,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:48,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:48,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:48,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:48,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:48,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:38:48,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:48,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:48,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:48,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:48,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:48,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:48,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:38:48,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:48,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-24 22:38:48,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:38:48,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:38:48,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:48,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:48,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:48,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:48,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:48,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:48,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 22:38:48,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:48,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:48,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:38:48,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:48,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:48,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:48,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:48,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:48,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:48,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:48,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 22:38:48,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:48,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:48,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:48,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:48,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 22:38:48,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155129920] [2020-09-24 22:38:48,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:48,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:38:48,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80700231] [2020-09-24 22:38:48,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:38:48,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:48,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:38:48,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:38:48,829 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2020-09-24 22:38:48,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:48,926 INFO L93 Difference]: Finished difference Result 78 states and 102 transitions. [2020-09-24 22:38:48,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:38:48,927 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-09-24 22:38:48,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:48,931 INFO L225 Difference]: With dead ends: 78 [2020-09-24 22:38:48,932 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 22:38:48,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:38:48,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 22:38:48,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-09-24 22:38:48,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 22:38:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-09-24 22:38:48,948 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 35 [2020-09-24 22:38:48,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:48,948 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-09-24 22:38:48,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:38:48,949 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-09-24 22:38:48,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:38:48,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:48,951 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:48,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:38:48,951 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:48,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:48,952 INFO L82 PathProgramCache]: Analyzing trace with hash -154171110, now seen corresponding path program 2 times [2020-09-24 22:38:48,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:48,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633027550] [2020-09-24 22:38:48,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:48,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:48,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:49,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:49,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:49,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:49,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:38:52,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:38:52,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3089 [2020-09-24 22:38:52,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:38:52,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:38:52,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:38:52,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:52,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:52,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:52,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:38:52,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:52,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:52,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:52,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:52,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:38:52,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:52,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-24 22:38:52,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:38:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:38:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:38:52,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:52,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:52,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:52,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:38:52,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:52,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:52,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:38:52,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:52,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:38:52,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:52,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-24 22:38:52,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:52,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:52,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:38:52,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:52,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:52,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:52,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:38:52,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:52,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:52,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:38:52,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:52,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:52,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:52,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:38:52,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:38:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:52,712 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 28 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 22:38:52,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633027550] [2020-09-24 22:38:52,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:52,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:38:52,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468705446] [2020-09-24 22:38:52,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:38:52,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:52,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:38:52,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:38:52,714 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 9 states. [2020-09-24 22:38:52,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:52,898 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2020-09-24 22:38:52,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:38:52,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-09-24 22:38:52,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:52,900 INFO L225 Difference]: With dead ends: 79 [2020-09-24 22:38:52,901 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 22:38:52,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:38:52,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 22:38:52,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-24 22:38:52,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 22:38:52,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-24 22:38:52,910 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 52 [2020-09-24 22:38:52,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:52,910 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-24 22:38:52,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:38:52,910 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-24 22:38:52,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:38:52,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:52,912 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:52,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:38:52,913 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:52,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:52,913 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 3 times [2020-09-24 22:38:52,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:52,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773652139] [2020-09-24 22:38:52,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:54,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:54,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:38:54,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:54,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1749 [2020-09-24 22:38:54,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:38:54,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 22:38:54,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:54,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:54,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:54,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:54,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:54,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:54,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:38:54,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:54,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:54,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:54,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:54,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:54,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:54,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:54,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:54,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:56,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:38:56,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:56,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1733 [2020-09-24 22:38:56,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:38:56,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:56,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:56,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:56,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:38:56,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:56,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 22:38:56,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:56,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:38:56,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:56,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:38:56,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:56,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:56,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:56,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:56,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:56,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:38:56,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:56,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:56,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:56,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:56,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:56,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:56,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:56,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:38:56,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:56,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:56,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:56,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:56,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:38:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:56,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:56,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:56,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:56,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:38:56,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:56,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:56,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:56,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:38:56,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 22:38:56,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773652139] [2020-09-24 22:38:56,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:56,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:38:56,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324994351] [2020-09-24 22:38:56,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:38:56,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:56,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:38:56,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:38:56,582 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-24 22:38:56,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:56,702 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-09-24 22:38:56,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:38:56,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-24 22:38:56,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:56,704 INFO L225 Difference]: With dead ends: 52 [2020-09-24 22:38:56,704 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 22:38:56,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:38:56,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 22:38:56,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-24 22:38:56,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 22:38:56,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-24 22:38:56,712 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 52 [2020-09-24 22:38:56,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:56,713 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-24 22:38:56,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:38:56,713 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-24 22:38:56,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 22:38:56,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:56,715 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:56,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:38:56,715 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:56,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:56,715 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 4 times [2020-09-24 22:38:56,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:56,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673770959] [2020-09-24 22:38:56,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:56,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:56,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:01,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 22:39:01,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:39:01,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 22:39:01,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:01,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:01,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:01,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 22:39:01,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:01,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:01,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:01,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:01,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:01,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:01,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:01,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:01,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:01,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:01,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:01,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:01,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:06,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 22:39:06,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:39:06,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:39:06,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:06,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:06,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:06,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 22:39:06,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:06,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:06,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:06,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:06,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:06,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-24 22:39:06,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:06,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:06,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:06,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:39:06,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:07,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:07,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:07,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:07,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:39:07,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:07,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:07,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:07,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:07,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:07,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:07,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:07,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:07,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:39:07,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:07,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:07,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:07,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:09,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:09,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:39:09,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2112 [2020-09-24 22:39:09,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:09,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:09,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:09,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:39:09,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:09,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:09,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:09,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:09,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:09,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 22:39:09,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:09,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:09,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:09,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:09,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:09,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:09,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:09,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:09,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:09,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:09,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:09,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:09,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:09,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:09,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:09,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:09,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:09,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:09,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:09,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:09,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:09,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:09,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:09,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:09,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:09,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:39:09,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:09,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:09,307 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 79 proven. 62 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-09-24 22:39:09,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673770959] [2020-09-24 22:39:09,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:09,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:39:09,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111048773] [2020-09-24 22:39:09,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:09,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:09,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:09,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:09,310 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 9 states. [2020-09-24 22:39:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:09,537 INFO L93 Difference]: Finished difference Result 104 states and 150 transitions. [2020-09-24 22:39:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:39:09,538 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-24 22:39:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:09,541 INFO L225 Difference]: With dead ends: 104 [2020-09-24 22:39:09,541 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 22:39:09,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:39:09,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 22:39:09,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 60. [2020-09-24 22:39:09,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 22:39:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2020-09-24 22:39:09,554 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 87 [2020-09-24 22:39:09,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:09,555 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2020-09-24 22:39:09,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:09,555 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2020-09-24 22:39:09,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 22:39:09,557 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:09,557 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:09,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:39:09,557 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:09,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:09,558 INFO L82 PathProgramCache]: Analyzing trace with hash -758395752, now seen corresponding path program 5 times [2020-09-24 22:39:09,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:09,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135841799] [2020-09-24 22:39:09,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:09,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:13,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:13,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:13,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:14,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:14,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 22:39:14,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 22:39:14,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:39:14,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:14,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:14,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:14,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:39:14,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:14,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:14,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:14,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:14,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:14,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:14,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:14,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:14,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:14,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:14,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:14,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:14,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:14,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:14,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:14,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:14,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:14,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:14,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:19,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 22:39:19,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:39:19,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:39:19,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:19,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:19,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:19,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:39:19,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:19,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:19,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:19,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:19,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:19,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-24 22:39:19,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:19,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:19,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:19,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:39:19,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:19,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:19,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:19,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:19,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:19,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:39:19,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:19,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:19,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:19,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:19,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:19,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:19,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:19,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:19,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:19,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:39:19,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:19,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:19,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:19,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:19,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:19,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:19,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:20,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:20,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:20,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-24 22:39:20,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:20,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:20,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:20,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:20,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:20,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:20,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:20,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 22:39:20,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:20,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:20,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:20,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:20,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:20,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:20,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:20,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:20,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:20,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:39:20,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:20,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:20,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:20,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:20,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 47 proven. 38 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-24 22:39:20,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135841799] [2020-09-24 22:39:20,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:20,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:39:20,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217522324] [2020-09-24 22:39:20,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:20,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:20,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:20,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:20,204 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand 9 states. [2020-09-24 22:39:20,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:20,456 INFO L93 Difference]: Finished difference Result 120 states and 168 transitions. [2020-09-24 22:39:20,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 22:39:20,457 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-24 22:39:20,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:20,460 INFO L225 Difference]: With dead ends: 120 [2020-09-24 22:39:20,460 INFO L226 Difference]: Without dead ends: 59 [2020-09-24 22:39:20,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:39:20,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-24 22:39:20,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2020-09-24 22:39:20,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 22:39:20,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-09-24 22:39:20,475 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 69 [2020-09-24 22:39:20,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:20,475 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-09-24 22:39:20,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:20,477 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-09-24 22:39:20,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 22:39:20,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:20,479 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] [2020-09-24 22:39:20,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:39:20,480 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:20,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:20,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 6 times [2020-09-24 22:39:20,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:20,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000389513] [2020-09-24 22:39:20,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:20,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:22,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:25,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 22:39:25,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 22:39:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:39:25,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:39:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 22:39:25,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:25,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:25,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:25,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:25,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:25,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:25,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:25,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:25,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:25,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:30,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 22:39:30,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:39:30,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 22:39:30,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-24 22:39:30,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 22:39:30,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:30,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:30,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:30,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:30,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:30,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:39:30,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:30,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:30,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:30,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:30,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:30,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:30,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:30,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:39:30,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:30,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:30,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:30,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:30,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:30,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:30,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:30,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:30,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:30,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:30,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:30,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:30,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:30,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:30,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:30,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:30,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:30,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:30,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:30,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:30,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:30,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:30,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:30,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:30,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:30,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:30,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:30,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:30,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:30,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:30,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:30,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:30,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:30,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 22:39:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:30,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:30,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:32,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 22:39:32,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:32,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2347 [2020-09-24 22:39:32,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:32,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 22:39:32,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:32,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:32,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:33,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:33,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:33,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:33,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:33,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:36,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:39:36,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3087 [2020-09-24 22:39:36,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 22:39:36,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:36,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:36,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 22:39:36,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:36,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:36,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:36,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:36,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:36,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:36,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:36,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:36,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:36,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:36,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:36,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:36,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:36,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:36,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:36,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:36,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:36,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:39:36,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:36,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:36,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:36,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 22:39:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:36,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:36,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:39:36,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:36,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 218 proven. 12 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-09-24 22:39:36,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000389513] [2020-09-24 22:39:36,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:36,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:39:36,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819289290] [2020-09-24 22:39:36,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:39:36,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:36,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:39:36,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:39:36,242 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 8 states. [2020-09-24 22:39:36,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:36,367 INFO L93 Difference]: Finished difference Result 102 states and 125 transitions. [2020-09-24 22:39:36,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:39:36,367 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 123 [2020-09-24 22:39:36,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:36,368 INFO L225 Difference]: With dead ends: 102 [2020-09-24 22:39:36,369 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 22:39:36,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:39:36,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 22:39:36,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-09-24 22:39:36,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 22:39:36,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-09-24 22:39:36,382 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 123 [2020-09-24 22:39:36,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:36,383 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-09-24 22:39:36,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:39:36,383 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-09-24 22:39:36,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-24 22:39:36,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:36,385 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:36,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:39:36,385 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:36,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:36,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1885389560, now seen corresponding path program 7 times [2020-09-24 22:39:36,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:36,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523831755] [2020-09-24 22:39:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking...