/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 interpolation-heuristic=FIRST --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/Fibonacci04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:56:46,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:56:46,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:56:46,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:56:46,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:56:46,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:56:46,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:56:46,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:56:46,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:56:46,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:56:46,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:56:46,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:56:46,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:56:46,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:56:46,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:56:46,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:56:46,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:56:46,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:56:46,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:56:46,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:56:46,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:56:46,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:56:46,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:56:46,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:56:46,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:56:46,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:56:46,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:56:46,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:56:46,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:56:46,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:56:46,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:56:46,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:56:46,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:56:46,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:56:46,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:56:46,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:56:46,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:56:46,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:56:46,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:56:46,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:56:46,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:56:46,339 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 15:56:46,366 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:56:46,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:56:46,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:56:46,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:56:46,368 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:56:46,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:56:46,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:56:46,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:56:46,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:56:46,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:56:46,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:56:46,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:56:46,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:56:46,370 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:56:46,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:56:46,370 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:56:46,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:56:46,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:56:46,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:56:46,371 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:56:46,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:56:46,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:56:46,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:56:46,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:56:46,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:56:46,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:56:46,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:56:46,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:56:46,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:56:46,373 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 15:56:46,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:56:46,865 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:56:46,872 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:56:46,874 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:56:46,876 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:56:46,878 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci04.c [2020-09-24 15:56:46,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efdf45e6e/d7f644743f754c21ac656b5bfc2fee40/FLAGa26800b9e [2020-09-24 15:56:47,483 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:56:47,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci04.c [2020-09-24 15:56:47,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efdf45e6e/d7f644743f754c21ac656b5bfc2fee40/FLAGa26800b9e [2020-09-24 15:56:47,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efdf45e6e/d7f644743f754c21ac656b5bfc2fee40 [2020-09-24 15:56:47,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:56:47,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:56:47,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:56:47,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:56:47,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:56:47,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:56:47" (1/1) ... [2020-09-24 15:56:47,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:47, skipping insertion in model container [2020-09-24 15:56:47,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:56:47" (1/1) ... [2020-09-24 15:56:47,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:56:47,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:56:48,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:56:48,127 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:56:48,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:56:48,171 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:56:48,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:48 WrapperNode [2020-09-24 15:56:48,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:56:48,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:56:48,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:56:48,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:56:48,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:48" (1/1) ... [2020-09-24 15:56:48,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:48" (1/1) ... [2020-09-24 15:56:48,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:48" (1/1) ... [2020-09-24 15:56:48,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:48" (1/1) ... [2020-09-24 15:56:48,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:48" (1/1) ... [2020-09-24 15:56:48,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:48" (1/1) ... [2020-09-24 15:56:48,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:48" (1/1) ... [2020-09-24 15:56:48,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:56:48,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:56:48,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:56:48,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:56:48,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:48" (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 15:56:48,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:56:48,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:56:48,379 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-24 15:56:48,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:56:48,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:56:48,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:56:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-24 15:56:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:56:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:56:48,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:56:48,605 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:56:48,605 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:56:48,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:56:48 BoogieIcfgContainer [2020-09-24 15:56:48,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:56:48,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:56:48,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:56:48,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:56:48,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:56:47" (1/3) ... [2020-09-24 15:56:48,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f1e7ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:56:48, skipping insertion in model container [2020-09-24 15:56:48,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:48" (2/3) ... [2020-09-24 15:56:48,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f1e7ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:56:48, skipping insertion in model container [2020-09-24 15:56:48,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:56:48" (3/3) ... [2020-09-24 15:56:48,656 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci04.c [2020-09-24 15:56:48,672 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:56:48,685 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:56:48,726 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:56:48,765 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:56:48,766 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:56:48,766 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:56:48,766 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:56:48,766 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:56:48,766 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:56:48,767 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:56:48,767 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:56:48,788 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-24 15:56:48,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-24 15:56:48,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:56:48,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:56:48,798 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:56:48,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:56:48,805 INFO L82 PathProgramCache]: Analyzing trace with hash -2064988448, now seen corresponding path program 1 times [2020-09-24 15:56:48,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:56:48,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107734605] [2020-09-24 15:56:48,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:56:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:48,966 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:48,966 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:48,966 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:48,966 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:48,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 15:56:48,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:48,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 15:56:48,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:56:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 15:56:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 15:56:48,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:49,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:56:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:49,040 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:49,040 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:49,040 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:49,041 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:49,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:56:49,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:49,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:56:49,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:49,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:49,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:56:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:49,062 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:49,062 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:49,063 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:49,063 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:49,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:56:49,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:49,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:56:49,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:49,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:56:49,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:49,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:56:49,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:49,122 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 15:56:49,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107734605] [2020-09-24 15:56:49,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:56:49,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:56:49,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049651247] [2020-09-24 15:56:49,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:56:49,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:56:49,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:56:49,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:56:49,157 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-09-24 15:56:49,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:56:49,298 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-09-24 15:56:49,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:56:49,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-24 15:56:49,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:56:49,315 INFO L225 Difference]: With dead ends: 48 [2020-09-24 15:56:49,315 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 15:56:49,320 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 15:56:49,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 15:56:49,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 15:56:49,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 15:56:49,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-24 15:56:49,376 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2020-09-24 15:56:49,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:56:49,376 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-24 15:56:49,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:56:49,377 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-24 15:56:49,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-24 15:56:49,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:56:49,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:56:49,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:56:49,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:56:49,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:56:49,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1678486471, now seen corresponding path program 1 times [2020-09-24 15:56:49,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:56:49,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524201981] [2020-09-24 15:56:49,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:56:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:49,405 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:49,406 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:49,406 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:49,406 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:49,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 15:56:49,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:49,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:56:49,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:56:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 15:56:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 15:56:49,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:49,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:56:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:49,437 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:49,438 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:49,438 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:49,438 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:49,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:56:49,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:49,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:49,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:49,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:49,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:49,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:49,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:56:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:49,462 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:56:49,462 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:49,462 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:49,463 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:49,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:49,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:49,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:56:49,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:56:49,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:49,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 15:56:49,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:49,518 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 15:56:49,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524201981] [2020-09-24 15:56:49,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:56:49,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:56:49,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454325939] [2020-09-24 15:56:49,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:56:49,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:56:49,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:56:49,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:56:49,525 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-09-24 15:56:49,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:56:49,638 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-09-24 15:56:49,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 15:56:49,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-24 15:56:49,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:56:49,641 INFO L225 Difference]: With dead ends: 38 [2020-09-24 15:56:49,641 INFO L226 Difference]: Without dead ends: 32 [2020-09-24 15:56:49,642 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 15:56:49,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-24 15:56:49,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-24 15:56:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 15:56:49,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-24 15:56:49,651 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2020-09-24 15:56:49,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:56:49,652 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-24 15:56:49,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:56:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-24 15:56:49,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 15:56:49,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:56:49,654 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, 1, 1] [2020-09-24 15:56:49,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:56:49,655 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:56:49,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:56:49,655 INFO L82 PathProgramCache]: Analyzing trace with hash 961212118, now seen corresponding path program 1 times [2020-09-24 15:56:49,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:56:49,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513394491] [2020-09-24 15:56:49,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:56:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:49,684 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:49,684 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:49,685 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:49,685 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:49,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 15:56:49,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:49,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 15:56:49,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:49,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:56:49,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 15:56:49,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:56:49,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:49,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:56:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:49,705 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:49,706 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:49,706 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:49,706 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:49,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:56:49,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:49,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:49,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:49,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:49,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:49,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:56:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:49,755 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:49,755 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:49,755 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:49,756 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:49,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 15:56:49,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:49,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 15:56:49,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:56:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 15:56:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:56:49,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:49,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:49,833 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:49,836 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:49,836 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:49,836 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:49,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:56:49,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:49,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 15:56:49,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:56:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:56:49,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:56:49,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:49,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 15:56:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:49,868 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:49,868 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:49,868 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:49,869 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:49,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:56:49,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:49,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:49,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:49,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:49,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 15:56:49,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:49,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:49,879 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 15:56:49,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513394491] [2020-09-24 15:56:49,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:56:49,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 15:56:49,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024263425] [2020-09-24 15:56:49,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 15:56:49,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:56:49,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 15:56:49,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:56:49,882 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-09-24 15:56:50,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:56:50,000 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2020-09-24 15:56:50,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:56:50,001 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-24 15:56:50,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:56:50,002 INFO L225 Difference]: With dead ends: 54 [2020-09-24 15:56:50,004 INFO L226 Difference]: Without dead ends: 32 [2020-09-24 15:56:50,005 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 15:56:50,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-24 15:56:50,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-24 15:56:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-24 15:56:50,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-09-24 15:56:50,023 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 35 [2020-09-24 15:56:50,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:56:50,023 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-09-24 15:56:50,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 15:56:50,024 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-09-24 15:56:50,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 15:56:50,028 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:56:50,028 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, 1, 1] [2020-09-24 15:56:50,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:56:50,029 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:56:50,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:56:50,029 INFO L82 PathProgramCache]: Analyzing trace with hash -125795935, now seen corresponding path program 1 times [2020-09-24 15:56:50,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:56:50,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077433164] [2020-09-24 15:56:50,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:56:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:50,073 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:50,073 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:50,074 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:50,074 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:50,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 15:56:50,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:50,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:56:50,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:50,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:56:50,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 15:56:50,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 15:56:50,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:50,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:56:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:50,097 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:50,097 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:50,097 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:50,098 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:50,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:56:50,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:50,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:50,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:50,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:50,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:50,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:50,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:50,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:56:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:50,121 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:50,121 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:50,122 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:50,122 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:50,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:56:50,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:50,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 15:56:50,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:56:50,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:50,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:56:50,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:50,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:50,179 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:50,179 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:50,180 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:50,180 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:50,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:50,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:50,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 15:56:50,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:56:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 15:56:50,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:50,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:56:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:50,211 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:50,212 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:50,212 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:50,212 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:50,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:56:50,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:50,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:56:50,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:50,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:50,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:50,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:56:50,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 15:56:50,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077433164] [2020-09-24 15:56:50,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:56:50,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 15:56:50,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736152543] [2020-09-24 15:56:50,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:56:50,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:56:50,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:56:50,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:56:50,227 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 7 states. [2020-09-24 15:56:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:56:50,379 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-09-24 15:56:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:56:50,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-24 15:56:50,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:56:50,382 INFO L225 Difference]: With dead ends: 46 [2020-09-24 15:56:50,383 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 15:56:50,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 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 15:56:50,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 15:56:50,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-24 15:56:50,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 15:56:50,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2020-09-24 15:56:50,395 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 36 [2020-09-24 15:56:50,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:56:50,396 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-09-24 15:56:50,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:56:50,396 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2020-09-24 15:56:50,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 15:56:50,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:56:50,399 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, 1, 1] [2020-09-24 15:56:50,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:56:50,400 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:56:50,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:56:50,400 INFO L82 PathProgramCache]: Analyzing trace with hash 4423077, now seen corresponding path program 2 times [2020-09-24 15:56:50,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:56:50,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487300926] [2020-09-24 15:56:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:56:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:50,484 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:56:50,484 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:50,484 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:50,485 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:50,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 15:56:50,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:50,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 15:56:50,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 15:56:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 15:56:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 15:56:50,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:50,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:56:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:50,537 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:50,538 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:50,538 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:50,538 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:50,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:56:50,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:50,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:50,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:50,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:50,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:50,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:50,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:50,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:56:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:50,572 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:56:50,573 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:50,573 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:50,573 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:50,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 15:56:50,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:50,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 15:56:50,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:50,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 15:56:50,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 15:56:50,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 15:56:50,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:50,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:50,624 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 15:56:50,624 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:50,624 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:50,625 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:50,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:56:50,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:50,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:56:50,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:56:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:56:50,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:50,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:50,684 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:56:50,684 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:50,684 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:50,685 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:50,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:50,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:50,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 15:56:50,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:50,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:56:50,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:50,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 15:56:50,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:50,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:56:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:50,709 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:50,710 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:50,710 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:50,710 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:50,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:56:50,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:50,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:56:50,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:50,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:50,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:56:50,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:50,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 15:56:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:50,732 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:56:50,732 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:50,732 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:50,733 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:50,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:56:50,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:50,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:56:50,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:56:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:56:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 15:56:50,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:50,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:50,766 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:50,766 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:50,766 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:50,767 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:50,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:56:50,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:50,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:56:50,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:50,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:50,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:50,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 15:56:50,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:50,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:50,778 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:50,778 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:50,778 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:50,779 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:50,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:50,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:50,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:50,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:50,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:50,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:50,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:50,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:50,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:56:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:50,785 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:50,785 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:50,786 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:50,786 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:50,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:56:50,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:50,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:50,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:50,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:50,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:50,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:50,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:50,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 15:56:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:50,796 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:50,796 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:50,796 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:50,797 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:50,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:50,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:50,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:56:50,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:50,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:56:50,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:50,838 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 59 proven. 70 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-09-24 15:56:50,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487300926] [2020-09-24 15:56:50,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:56:50,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 15:56:50,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069593648] [2020-09-24 15:56:50,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:56:50,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:56:50,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:56:50,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:56:50,842 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand 8 states. [2020-09-24 15:56:51,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:56:51,082 INFO L93 Difference]: Finished difference Result 92 states and 128 transitions. [2020-09-24 15:56:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 15:56:51,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-09-24 15:56:51,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:56:51,085 INFO L225 Difference]: With dead ends: 92 [2020-09-24 15:56:51,085 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 15:56:51,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:56:51,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 15:56:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-24 15:56:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 15:56:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2020-09-24 15:56:51,101 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 89 [2020-09-24 15:56:51,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:56:51,101 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2020-09-24 15:56:51,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:56:51,101 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2020-09-24 15:56:51,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-24 15:56:51,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:56:51,107 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, 1, 1] [2020-09-24 15:56:51,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:56:51,107 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:56:51,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:56:51,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1575340027, now seen corresponding path program 3 times [2020-09-24 15:56:51,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:56:51,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56035048] [2020-09-24 15:56:51,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:56:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:51,170 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:56:51,170 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:51,170 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:51,171 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:51,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-24 15:56:51,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:51,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 15:56:51,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:51,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:56:51,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 15:56:51,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 15:56:51,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:51,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:56:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:51,196 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:51,196 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:51,196 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:51,196 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:51,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:56:51,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:51,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:51,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:51,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:51,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:51,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:56:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:51,249 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:56:51,249 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:51,249 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:51,249 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:51,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 15:56:51,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:51,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 15:56:51,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:51,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:56:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 15:56:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 15:56:51,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:51,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:51,310 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 15:56:51,310 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:51,310 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:51,311 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:51,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:56:51,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:51,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 15:56:51,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 15:56:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 15:56:51,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:51,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:51,366 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 15:56:51,366 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:51,366 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:51,367 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:51,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:56:51,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:51,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:56:51,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:51,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:56:51,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:51,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:56:51,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:51,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:51,408 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:56:51,408 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:51,408 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:51,409 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:51,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:51,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:51,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:56:51,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:51,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:56:51,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:51,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 15:56:51,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:51,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:56:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:51,440 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:51,440 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:51,440 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:51,441 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:51,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:56:51,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:51,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:56:51,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:56:51,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:51,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 15:56:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:51,450 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:51,451 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:51,451 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:51,451 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:51,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:51,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:51,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:56:51,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:56:51,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:51,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 15:56:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:51,485 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:56:51,486 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:51,486 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:51,486 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:51,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 15:56:51,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:51,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:56:51,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:51,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:56:51,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:56:51,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 15:56:51,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:51,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:51,544 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:56:51,544 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:51,544 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:51,545 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:51,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:56:51,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:51,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:56:51,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:56:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 15:56:51,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:51,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:51,624 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:51,624 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:51,624 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:51,625 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:51,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:56:51,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:51,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:56:51,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:51,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:51,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:51,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 15:56:51,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:51,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:51,635 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:51,635 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:51,636 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:51,636 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:51,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:51,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:51,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:51,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:51,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:51,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:51,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:51,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:51,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:56:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:51,642 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:51,643 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:51,643 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:51,643 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:51,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:56:51,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:51,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:51,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:51,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:51,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:51,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:51,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 15:56:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:51,652 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:51,653 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:51,653 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:51,653 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:51,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:51,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:51,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:56:51,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:51,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:56:51,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:51,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 15:56:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:51,665 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:51,665 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:51,665 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:51,666 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:51,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:51,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:51,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:56:51,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:51,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:51,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:51,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:56:51,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:51,736 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 108 proven. 189 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-09-24 15:56:51,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56035048] [2020-09-24 15:56:51,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:56:51,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 15:56:51,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529170819] [2020-09-24 15:56:51,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 15:56:51,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:56:51,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 15:56:51,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-24 15:56:51,739 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand 10 states. [2020-09-24 15:56:52,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:56:52,037 INFO L93 Difference]: Finished difference Result 131 states and 196 transitions. [2020-09-24 15:56:52,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 15:56:52,038 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 125 [2020-09-24 15:56:52,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:56:52,040 INFO L225 Difference]: With dead ends: 131 [2020-09-24 15:56:52,041 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 15:56:52,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-09-24 15:56:52,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 15:56:52,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-09-24 15:56:52,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-24 15:56:52,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 96 transitions. [2020-09-24 15:56:52,059 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 96 transitions. Word has length 125 [2020-09-24 15:56:52,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:56:52,060 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 96 transitions. [2020-09-24 15:56:52,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 15:56:52,060 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 96 transitions. [2020-09-24 15:56:52,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 15:56:52,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:56:52,063 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, 1, 1] [2020-09-24 15:56:52,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 15:56:52,063 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:56:52,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:56:52,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1005193447, now seen corresponding path program 4 times [2020-09-24 15:56:52,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:56:52,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263616640] [2020-09-24 15:56:52,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:56:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:52,101 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:52,102 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:52,102 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:52,102 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:52,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 15:56:52,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:52,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 15:56:52,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:52,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:56:52,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 15:56:52,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-24 15:56:52,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:52,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:56:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:52,128 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:52,129 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:52,129 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:52,129 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:52,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:56:52,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:52,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:52,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:52,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:52,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:52,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:56:52,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:52,162 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:52,163 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:52,163 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:52,163 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:52,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 15:56:52,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:52,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 15:56:52,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:56:52,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:52,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 15:56:52,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:52,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:52,217 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:52,217 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:52,217 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:52,218 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:52,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:56:52,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:52,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 15:56:52,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:56:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 15:56:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:52,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:52,259 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:52,260 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:52,260 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:52,260 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:52,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:56:52,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:52,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 15:56:52,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:52,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:56:52,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:52,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:56:52,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:52,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:52,287 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:52,288 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:52,288 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:52,288 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:52,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:52,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:52,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:56:52,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:52,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:56:52,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:52,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 15:56:52,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:52,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:56:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:52,306 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:52,307 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:52,307 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:52,307 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:52,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:56:52,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:52,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:52,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:52,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:56:52,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:52,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 15:56:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:52,315 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:52,315 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:52,316 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:52,316 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:52,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:52,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:52,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:52,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:52,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:52,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:52,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:56:52,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:52,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 15:56:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:52,327 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:52,327 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:52,328 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:52,328 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:52,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:56:52,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:52,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:52,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:52,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 15:56:52,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:52,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:52,336 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:52,337 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:52,337 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:52,337 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:52,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:52,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:52,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:52,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:52,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:52,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:52,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:52,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:52,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:56:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:52,342 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:52,343 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:52,343 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:52,343 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:52,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:56:52,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:52,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:52,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:52,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:52,374 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 20 proven. 113 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-24 15:56:52,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263616640] [2020-09-24 15:56:52,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:56:52,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 15:56:52,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961187988] [2020-09-24 15:56:52,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 15:56:52,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:56:52,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 15:56:52,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-24 15:56:52,377 INFO L87 Difference]: Start difference. First operand 76 states and 96 transitions. Second operand 9 states. [2020-09-24 15:56:52,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:56:52,560 INFO L93 Difference]: Finished difference Result 170 states and 227 transitions. [2020-09-24 15:56:52,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 15:56:52,561 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-09-24 15:56:52,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:56:52,566 INFO L225 Difference]: With dead ends: 170 [2020-09-24 15:56:52,566 INFO L226 Difference]: Without dead ends: 164 [2020-09-24 15:56:52,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-24 15:56:52,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-24 15:56:52,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 134. [2020-09-24 15:56:52,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-24 15:56:52,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 183 transitions. [2020-09-24 15:56:52,593 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 183 transitions. Word has length 89 [2020-09-24 15:56:52,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:56:52,593 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 183 transitions. [2020-09-24 15:56:52,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 15:56:52,594 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 183 transitions. [2020-09-24 15:56:52,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-24 15:56:52,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:56:52,598 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:56:52,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 15:56:52,599 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:56:52,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:56:52,599 INFO L82 PathProgramCache]: Analyzing trace with hash -750862549, now seen corresponding path program 5 times [2020-09-24 15:56:52,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:56:52,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573539937] [2020-09-24 15:56:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:56:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:52,667 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:56:52,667 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:52,668 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:52,668 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:52,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-24 15:56:52,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:52,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 15:56:52,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:52,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:56:52,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 15:56:52,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 228 [2020-09-24 15:56:52,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:52,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:56:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:52,709 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:52,710 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:52,710 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:52,710 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:52,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:56:52,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:52,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:52,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:52,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:56:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:52,788 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:56:52,789 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:52,789 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:52,789 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:52,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-09-24 15:56:52,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:52,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 15:56:52,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:52,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 15:56:52,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 15:56:52,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-24 15:56:52,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:52,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:52,871 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 15:56:52,872 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:52,872 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:52,872 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:52,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 15:56:52,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:52,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 15:56:52,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:52,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:56:52,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:52,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 15:56:52,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:52,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:52,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:52,936 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 15:56:52,936 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:52,937 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:52,937 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:52,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:56:52,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:52,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 15:56:52,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:52,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:56:52,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:52,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 15:56:52,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:52,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:52,980 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 15:56:52,980 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:52,980 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:52,980 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:52,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:56:52,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:52,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 15:56:52,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:56:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:56:52,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:53,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:53,013 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:56:53,013 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:53,013 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:53,014 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:53,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:53,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:53,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:56:53,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:56:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:53,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 15:56:53,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:53,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:56:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:53,037 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:53,038 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:53,038 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:53,038 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:53,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:56:53,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:53,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:56:53,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:56:53,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:53,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 15:56:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:53,047 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:53,048 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:53,048 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:53,048 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:53,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:53,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:53,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:56:53,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:53,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:56:53,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:53,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 15:56:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:53,062 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:53,062 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:53,062 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:53,062 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:53,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:56:53,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:53,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:56:53,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:53,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:53,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:53,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 15:56:53,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:53,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:53,071 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:53,072 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:53,072 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:53,072 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:53,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:53,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:53,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:53,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:53,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:53,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:53,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:53,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:53,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:56:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:53,078 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:53,078 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:53,079 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:53,079 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:53,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:56:53,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:53,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:53,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:53,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 15:56:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:53,124 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:53,124 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:53,124 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:53,125 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:53,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-24 15:56:53,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:53,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 15:56:53,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:53,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:56:53,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 15:56:53,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-24 15:56:53,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:53,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:53,209 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:53,209 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:53,209 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:53,209 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:53,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 15:56:53,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:53,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 15:56:53,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 15:56:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 15:56:53,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:53,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:53,275 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:53,275 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:53,275 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:53,276 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:53,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:56:53,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:53,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:56:53,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:53,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:56:53,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 15:56:53,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:53,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:53,319 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:53,319 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:53,320 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:53,320 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:53,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:56:53,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:53,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 15:56:53,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:56:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 15:56:53,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:53,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:53,359 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:53,360 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:53,360 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:53,361 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:53,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:53,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:53,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:56:53,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:56:53,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:53,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:56:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:53,369 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:53,370 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:53,370 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:53,370 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:53,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:56:53,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:53,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:56:53,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:53,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:53,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:53,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:56:53,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:56:53,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 15:56:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:53,380 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:53,381 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:53,381 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:53,381 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:53,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:53,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:53,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:53,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:53,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:56:53,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 23 [2020-09-24 15:56:53,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 15:56:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:53,427 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:53,427 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:53,427 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:53,428 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:53,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:56:53,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:53,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:56:53,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:56:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:53,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 15:56:53,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:53,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:56:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:53,435 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:53,436 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:53,436 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:53,436 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:53,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:53,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:53,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:56:53,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:53,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:53,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:53,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:53,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:53,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:56:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:53,442 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:56:53,442 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:53,443 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:53,443 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:53,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:56:53,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:53,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:56:53,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:53,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:56:53,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:56:53,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:56:53,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:53,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 15:56:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:56:53,459 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-24 15:56:53,460 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:56:53,460 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:56:53,460 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:56:53,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:56:53,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:56:53,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:56:53,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:56:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:56:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:56:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 15:56:53,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:56:53,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1318 backedges. 377 proven. 439 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2020-09-24 15:56:53,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573539937] [2020-09-24 15:56:53,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:56:53,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 15:56:53,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852219501] [2020-09-24 15:56:53,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 15:56:53,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:56:53,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 15:56:53,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-24 15:56:53,555 INFO L87 Difference]: Start difference. First operand 134 states and 183 transitions. Second operand 14 states. [2020-09-24 15:56:54,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:56:54,023 INFO L93 Difference]: Finished difference Result 282 states and 447 transitions. [2020-09-24 15:56:54,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 15:56:54,025 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 195 [2020-09-24 15:56:54,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:56:54,027 INFO L225 Difference]: With dead ends: 282 [2020-09-24 15:56:54,027 INFO L226 Difference]: Without dead ends: 89 [2020-09-24 15:56:54,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-09-24 15:56:54,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-24 15:56:54,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 76. [2020-09-24 15:56:54,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-24 15:56:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-09-24 15:56:54,062 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 195 [2020-09-24 15:56:54,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:56:54,063 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-09-24 15:56:54,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 15:56:54,063 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-09-24 15:56:54,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 15:56:54,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:56:54,067 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:56:54,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 15:56:54,068 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:56:54,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:56:54,068 INFO L82 PathProgramCache]: Analyzing trace with hash -311463261, now seen corresponding path program 6 times [2020-09-24 15:56:54,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:56:54,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375328271] [2020-09-24 15:56:54,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:56:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 15:56:54,099 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 15:56:54,099 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 15:56:54,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 15:56:54,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:56:54 BoogieIcfgContainer [2020-09-24 15:56:54,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:56:54,140 INFO L168 Benchmark]: Toolchain (without parser) took 6325.31 ms. Allocated memory was 138.4 MB in the beginning and 330.8 MB in the end (delta: 192.4 MB). Free memory was 101.8 MB in the beginning and 268.6 MB in the end (delta: -166.9 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-09-24 15:56:54,141 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:56:54,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.70 ms. Allocated memory is still 138.4 MB. Free memory was 101.1 MB in the beginning and 91.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-24 15:56:54,143 INFO L168 Benchmark]: Boogie Preprocessor took 113.57 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 91.8 MB in the beginning and 181.4 MB in the end (delta: -89.7 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-09-24 15:56:54,143 INFO L168 Benchmark]: RCFGBuilder took 324.36 ms. Allocated memory is still 202.4 MB. Free memory was 181.4 MB in the beginning and 168.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-09-24 15:56:54,144 INFO L168 Benchmark]: TraceAbstraction took 5509.55 ms. Allocated memory was 202.4 MB in the beginning and 330.8 MB in the end (delta: 128.5 MB). Free memory was 167.6 MB in the beginning and 268.6 MB in the end (delta: -101.1 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2020-09-24 15:56:54,148 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 138.4 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 352.70 ms. Allocated memory is still 138.4 MB. Free memory was 101.1 MB in the beginning and 91.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.57 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 91.8 MB in the beginning and 181.4 MB in the end (delta: -89.7 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 324.36 ms. Allocated memory is still 202.4 MB. Free memory was 181.4 MB in the beginning and 168.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5509.55 ms. Allocated memory was 202.4 MB in the beginning and 330.8 MB in the end (delta: 128.5 MB). Free memory was 167.6 MB in the beginning and 268.6 MB in the end (delta: -101.1 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 33]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L28] int x = __VERIFIER_nondet_int(); [L29] CALL, EXPR fibonacci(x) [L17] COND FALSE !(n < 1) [L19] COND FALSE !(n == 1) [L22] CALL, EXPR fibonacci(n-1) [L17] COND FALSE !(n < 1) [L19] COND FALSE !(n == 1) [L22] CALL, EXPR fibonacci(n-1) [L17] COND FALSE !(n < 1) [L19] COND FALSE !(n == 1) [L22] CALL, EXPR fibonacci(n-1) [L17] COND FALSE !(n < 1) [L19] COND FALSE !(n == 1) [L22] CALL, EXPR fibonacci(n-1) [L17] COND FALSE !(n < 1) [L19] COND TRUE n == 1 [L20] return 1; [L22] RET, EXPR fibonacci(n-1) [L22] CALL, EXPR fibonacci(n-2) [L17] COND TRUE n < 1 [L18] return 0; [L22] RET, EXPR fibonacci(n-2) [L22] return fibonacci(n-1) + fibonacci(n-2); [L22] RET, EXPR fibonacci(n-1) [L22] CALL, EXPR fibonacci(n-2) [L17] COND FALSE !(n < 1) [L19] COND TRUE n == 1 [L20] return 1; [L22] RET, EXPR fibonacci(n-2) [L22] return fibonacci(n-1) + fibonacci(n-2); [L22] RET, EXPR fibonacci(n-1) [L22] CALL, EXPR fibonacci(n-2) [L17] COND FALSE !(n < 1) [L19] COND FALSE !(n == 1) [L22] CALL, EXPR fibonacci(n-1) [L17] COND FALSE !(n < 1) [L19] COND TRUE n == 1 [L20] return 1; [L22] RET, EXPR fibonacci(n-1) [L22] CALL, EXPR fibonacci(n-2) [L17] COND TRUE n < 1 [L18] return 0; [L22] RET, EXPR fibonacci(n-2) [L22] return fibonacci(n-1) + fibonacci(n-2); [L22] RET, EXPR fibonacci(n-2) [L22] return fibonacci(n-1) + fibonacci(n-2); [L22] RET, EXPR fibonacci(n-1) [L22] CALL, EXPR fibonacci(n-2) [L17] COND FALSE !(n < 1) [L19] COND FALSE !(n == 1) [L22] CALL, EXPR fibonacci(n-1) [L17] COND FALSE !(n < 1) [L19] COND FALSE !(n == 1) [L22] CALL, EXPR fibonacci(n-1) [L17] COND FALSE !(n < 1) [L19] COND TRUE n == 1 [L20] return 1; [L22] RET, EXPR fibonacci(n-1) [L22] CALL, EXPR fibonacci(n-2) [L17] COND TRUE n < 1 [L18] return 0; [L22] RET, EXPR fibonacci(n-2) [L22] return fibonacci(n-1) + fibonacci(n-2); [L22] RET, EXPR fibonacci(n-1) [L22] CALL, EXPR fibonacci(n-2) [L17] COND FALSE !(n < 1) [L19] COND TRUE n == 1 [L20] return 1; [L22] RET, EXPR fibonacci(n-2) [L22] return fibonacci(n-1) + fibonacci(n-2); [L22] RET, EXPR fibonacci(n-2) [L22] return fibonacci(n-1) + fibonacci(n-2); [L29] RET, EXPR fibonacci(x) [L29] int result = fibonacci(x); [L30] COND FALSE !(x != 5 || result == 3) [L33] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.3s, OverallIterations: 9, TraceHistogramMax: 21, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 258 SDtfs, 341 SDslu, 826 SDs, 0 SdLazy, 809 SolverSat, 182 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 144 SyntacticMatches, 6 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 48 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 748 NumberOfCodeBlocks, 748 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 598 ConstructedInterpolants, 0 QuantifiedInterpolants, 200534 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1426/2249 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...