/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:21:46,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:21:46,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:21:46,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:21:46,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:21:46,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:21:46,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:21:46,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:21:46,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:21:46,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:21:46,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:21:46,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:21:46,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:21:46,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:21:46,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:21:46,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:21:46,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:21:46,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:21:46,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:21:46,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:21:46,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:21:46,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:21:46,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:21:46,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:21:46,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:21:46,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:21:46,798 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:21:46,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:21:46,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:21:46,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:21:46,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:21:46,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:21:46,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:21:46,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:21:46,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:21:46,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:21:46,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:21:46,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:21:46,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:21:46,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:21:46,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:21:46,810 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 18:21:46,854 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:21:46,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:21:46,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:21:46,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:21:46,856 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:21:46,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:21:46,856 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:21:46,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:21:46,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:21:46,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:21:46,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:21:46,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:21:46,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:21:46,859 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:21:46,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:21:46,859 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:21:46,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:21:46,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:21:46,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:21:46,860 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:21:46,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:21:46,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:21:46,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:21:46,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:21:46,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:21:46,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:21:46,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:21:46,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:21:46,862 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:21:46,862 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 18:21:47,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:21:47,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:21:47,168 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:21:47,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:21:47,170 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:21:47,170 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-10-12 18:21:47,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c960c7ac2/b6807565de7b4323a2a67ab885206012/FLAG3a43ace0e [2020-10-12 18:21:47,638 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:21:47,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-10-12 18:21:47,645 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c960c7ac2/b6807565de7b4323a2a67ab885206012/FLAG3a43ace0e [2020-10-12 18:21:48,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c960c7ac2/b6807565de7b4323a2a67ab885206012 [2020-10-12 18:21:48,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:21:48,078 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:21:48,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:21:48,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:21:48,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:21:48,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:21:48" (1/1) ... [2020-10-12 18:21:48,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768abed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:21:48, skipping insertion in model container [2020-10-12 18:21:48,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:21:48" (1/1) ... [2020-10-12 18:21:48,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:21:48,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:21:48,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:21:48,277 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:21:48,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:21:48,301 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:21:48,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:21:48 WrapperNode [2020-10-12 18:21:48,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:21:48,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:21:48,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:21:48,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:21:48,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:21:48" (1/1) ... [2020-10-12 18:21:48,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:21:48" (1/1) ... [2020-10-12 18:21:48,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:21:48" (1/1) ... [2020-10-12 18:21:48,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:21:48" (1/1) ... [2020-10-12 18:21:48,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:21:48" (1/1) ... [2020-10-12 18:21:48,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:21:48" (1/1) ... [2020-10-12 18:21:48,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:21:48" (1/1) ... [2020-10-12 18:21:48,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:21:48,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:21:48,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:21:48,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:21:48,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:21:48" (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 [2020-10-12 18:21:48,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:21:48,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:21:48,478 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-10-12 18:21:48,478 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-10-12 18:21:48,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:21:48,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 18:21:48,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:21:48,478 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-10-12 18:21:48,478 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-10-12 18:21:48,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:21:48,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:21:48,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:21:48,654 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:21:48,655 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 18:21:48,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:21:48 BoogieIcfgContainer [2020-10-12 18:21:48,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:21:48,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:21:48,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:21:48,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:21:48,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:21:48" (1/3) ... [2020-10-12 18:21:48,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40782a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:21:48, skipping insertion in model container [2020-10-12 18:21:48,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:21:48" (2/3) ... [2020-10-12 18:21:48,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40782a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:21:48, skipping insertion in model container [2020-10-12 18:21:48,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:21:48" (3/3) ... [2020-10-12 18:21:48,668 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-2.c [2020-10-12 18:21:48,678 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:21:48,687 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:21:48,704 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:21:48,756 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:21:48,757 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:21:48,757 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:21:48,757 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:21:48,757 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:21:48,757 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:21:48,757 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:21:48,758 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:21:48,782 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-12 18:21:48,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-12 18:21:48,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:21:48,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:21:48,793 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:21:48,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:21:48,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-10-12 18:21:48,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:21:48,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003749494] [2020-10-12 18:21:48,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:21:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:48,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:48,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:49,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:49,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 18:21:49,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:21:49,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-12 18:21:49,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:49,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:21:49,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 18:21:49,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:21:49,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 18:21:49,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:21:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:49,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:49,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:49,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:21:49,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:21:49,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:21:49,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:21:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:21:49,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:49,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:21:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:49,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:49,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:49,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:21:49,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:21:49,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 18:21:49,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:21:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:49,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:21:49,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:21:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:21:49,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003749494] [2020-10-12 18:21:49,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:21:49,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 18:21:49,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314426967] [2020-10-12 18:21:49,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:21:49,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:21:49,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:21:49,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:21:49,199 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-10-12 18:21:49,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:21:49,247 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2020-10-12 18:21:49,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:21:49,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-12 18:21:49,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:21:49,260 INFO L225 Difference]: With dead ends: 47 [2020-10-12 18:21:49,260 INFO L226 Difference]: Without dead ends: 30 [2020-10-12 18:21:49,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:21:49,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-12 18:21:49,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-12 18:21:49,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-12 18:21:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-10-12 18:21:49,308 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-10-12 18:21:49,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:21:49,308 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-10-12 18:21:49,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:21:49,309 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-10-12 18:21:49,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 18:21:49,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:21:49,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:21:49,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:21:49,313 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:21:49,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:21:49,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-10-12 18:21:49,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:21:49,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676159375] [2020-10-12 18:21:49,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:21:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:49,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:49,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:49,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:49,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:21:49,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:21:49,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-12 18:21:49,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:21:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:21:49,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:21:49,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:21:49,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:21:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:49,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:49,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:49,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:21:49,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:21:49,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:21:49,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:21:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:49,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:21:49,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:49,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:21:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:49,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:49,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:49,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:21:49,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:21:49,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 18:21:49,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:49,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:21:49,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:21:49,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:21:49,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:21:49,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 18:21:49,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676159375] [2020-10-12 18:21:49,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:21:49,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 18:21:49,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340805431] [2020-10-12 18:21:49,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:21:49,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:21:49,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:21:49,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:21:49,558 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-10-12 18:21:49,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:21:49,622 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-10-12 18:21:49,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:21:49,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-12 18:21:49,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:21:49,625 INFO L225 Difference]: With dead ends: 36 [2020-10-12 18:21:49,625 INFO L226 Difference]: Without dead ends: 32 [2020-10-12 18:21:49,626 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 [2020-10-12 18:21:49,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-12 18:21:49,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-10-12 18:21:49,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-12 18:21:49,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-10-12 18:21:49,635 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-10-12 18:21:49,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:21:49,635 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-10-12 18:21:49,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:21:49,636 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-10-12 18:21:49,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 18:21:49,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:21:49,637 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:21:49,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:21:49,638 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:21:49,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:21:49,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-10-12 18:21:49,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:21:49,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205954412] [2020-10-12 18:21:49,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:21:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:49,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:49,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:49,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:49,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:50,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:50,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 18:21:50,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:21:50,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 939 [2020-10-12 18:21:50,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:50,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:21:50,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 18:21:50,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:21:50,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:50,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:21:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:50,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:50,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:50,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:21:50,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:21:50,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:21:50,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:50,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:21:50,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:50,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:21:50,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:21:50,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:21:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:50,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:50,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:50,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:50,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:21:50,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:21:50,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-12 18:21:50,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:21:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:21:50,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:50,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:21:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:50,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:50,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:50,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:21:50,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:21:50,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:21:50,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:21:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:21:50,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:50,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:21:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:50,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:50,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:50,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:21:50,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:21:50,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:21:50,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:21:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:21:50,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:50,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 18:21:50,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205954412] [2020-10-12 18:21:50,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:21:50,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:21:50,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597472063] [2020-10-12 18:21:50,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:21:50,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:21:50,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:21:50,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:21:50,908 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 9 states. [2020-10-12 18:21:51,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:21:51,013 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2020-10-12 18:21:51,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:21:51,015 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-12 18:21:51,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:21:51,016 INFO L225 Difference]: With dead ends: 44 [2020-10-12 18:21:51,017 INFO L226 Difference]: Without dead ends: 40 [2020-10-12 18:21:51,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:21:51,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-12 18:21:51,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2020-10-12 18:21:51,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-12 18:21:51,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-10-12 18:21:51,038 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 26 [2020-10-12 18:21:51,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:21:51,039 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-12 18:21:51,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:21:51,039 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2020-10-12 18:21:51,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 18:21:51,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:21:51,044 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:21:51,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:21:51,044 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:21:51,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:21:51,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1232971836, now seen corresponding path program 1 times [2020-10-12 18:21:51,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:21:51,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195704456] [2020-10-12 18:21:51,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:21:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:51,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:51,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:51,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:51,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:51,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:51,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:52,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:52,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 18:21:52,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:21:52,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1197 [2020-10-12 18:21:52,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:52,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:21:52,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 18:21:52,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:21:52,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:52,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:21:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:52,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:52,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:52,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:21:52,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:21:52,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:21:52,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:52,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:21:52,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:52,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:21:52,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:52,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:21:52,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:52,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:52,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:52,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:52,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:52,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:52,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 18:21:52,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:21:52,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-12 18:21:52,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:52,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:21:52,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:52,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:21:52,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:52,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:21:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:52,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:52,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:52,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:21:52,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:21:52,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:21:52,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:52,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:21:52,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:52,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:21:52,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:52,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:21:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:52,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:52,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:52,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:21:52,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:21:52,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:21:52,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:21:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:52,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:21:52,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:52,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 18:21:52,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195704456] [2020-10-12 18:21:52,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:21:52,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:21:52,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182828246] [2020-10-12 18:21:52,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:21:52,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:21:52,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:21:52,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:21:52,687 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand 9 states. [2020-10-12 18:21:52,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:21:52,757 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2020-10-12 18:21:52,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:21:52,758 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-12 18:21:52,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:21:52,760 INFO L225 Difference]: With dead ends: 47 [2020-10-12 18:21:52,760 INFO L226 Difference]: Without dead ends: 43 [2020-10-12 18:21:52,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:21:52,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-12 18:21:52,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2020-10-12 18:21:52,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 18:21:52,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2020-10-12 18:21:52,781 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 27 [2020-10-12 18:21:52,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:21:52,783 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2020-10-12 18:21:52,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:21:52,783 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2020-10-12 18:21:52,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-12 18:21:52,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:21:52,785 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:21:52,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:21:52,788 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:21:52,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:21:52,789 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 2 times [2020-10-12 18:21:52,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:21:52,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313050989] [2020-10-12 18:21:52,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:21:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:52,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:52,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:52,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:53,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:53,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 18:21:53,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:21:53,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-12 18:21:53,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:53,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:21:53,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 18:21:53,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:21:53,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:21:53,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:21:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:53,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:53,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:53,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:21:53,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:21:53,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:21:53,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:53,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:21:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:21:53,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:21:53,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:21:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:53,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:53,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:53,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 18:21:53,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:21:53,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 18:21:53,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:21:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:53,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:21:53,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:53,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:21:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:53,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:53,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:53,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:21:53,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:21:53,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:21:53,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:53,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:21:53,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:53,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:21:53,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:53,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:21:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:53,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:53,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:53,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:21:53,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:21:53,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:21:53,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:21:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:21:53,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-12 18:21:53,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313050989] [2020-10-12 18:21:53,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:21:53,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 18:21:53,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528546640] [2020-10-12 18:21:53,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:21:53,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:21:53,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:21:53,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:21:53,270 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 9 states. [2020-10-12 18:21:53,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:21:53,333 INFO L93 Difference]: Finished difference Result 47 states and 63 transitions. [2020-10-12 18:21:53,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:21:53,333 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-12 18:21:53,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:21:53,337 INFO L225 Difference]: With dead ends: 47 [2020-10-12 18:21:53,337 INFO L226 Difference]: Without dead ends: 43 [2020-10-12 18:21:53,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:21:53,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-12 18:21:53,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2020-10-12 18:21:53,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-12 18:21:53,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-10-12 18:21:53,354 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 27 [2020-10-12 18:21:53,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:21:53,356 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-10-12 18:21:53,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:21:53,356 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2020-10-12 18:21:53,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 18:21:53,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:21:53,360 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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, 1, 1] [2020-10-12 18:21:53,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:21:53,360 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:21:53,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:21:53,361 INFO L82 PathProgramCache]: Analyzing trace with hash -2100427843, now seen corresponding path program 1 times [2020-10-12 18:21:53,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:21:53,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589865906] [2020-10-12 18:21:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:21:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:53,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:53,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:53,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:53,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:53,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:54,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:57,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:57,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 18:21:57,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:21:57,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4501 [2020-10-12 18:21:57,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:57,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:21:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 18:21:57,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 18:21:57,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:57,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:21:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:57,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:57,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:57,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:21:57,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:21:57,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:21:57,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:21:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:57,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:21:57,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:57,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:21:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:57,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:57,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:57,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:58,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:58,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:58,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 18:21:58,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:21:58,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 889 [2020-10-12 18:21:58,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:58,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:21:58,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:58,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 18:21:58,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:58,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:21:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:58,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:58,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:58,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:21:58,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:21:58,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:21:58,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:58,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:21:58,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:58,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:21:58,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:21:58,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:21:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:58,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:58,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:58,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:58,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:21:58,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:21:58,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 18:21:58,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:21:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:21:58,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:58,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:21:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:58,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:58,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:58,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:21:58,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:21:58,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:21:58,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:58,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:21:58,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:58,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:21:58,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:58,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:21:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:58,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:58,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:21:58,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:21:58,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:21:58,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:21:58,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:21:58,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:21:58,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:21:58,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:21:58,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:21:59,012 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 18:21:59,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589865906] [2020-10-12 18:21:59,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:21:59,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 18:21:59,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435624911] [2020-10-12 18:21:59,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:21:59,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:21:59,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:21:59,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:21:59,015 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand 11 states. [2020-10-12 18:21:59,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:21:59,110 INFO L93 Difference]: Finished difference Result 61 states and 91 transitions. [2020-10-12 18:21:59,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:21:59,111 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-12 18:21:59,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:21:59,113 INFO L225 Difference]: With dead ends: 61 [2020-10-12 18:21:59,113 INFO L226 Difference]: Without dead ends: 57 [2020-10-12 18:21:59,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:21:59,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-12 18:21:59,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-10-12 18:21:59,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-12 18:21:59,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 79 transitions. [2020-10-12 18:21:59,137 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 79 transitions. Word has length 39 [2020-10-12 18:21:59,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:21:59,139 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 79 transitions. [2020-10-12 18:21:59,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:21:59,140 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 79 transitions. [2020-10-12 18:21:59,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 18:21:59,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:21:59,147 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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, 1] [2020-10-12 18:21:59,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:21:59,147 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:21:59,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:21:59,148 INFO L82 PathProgramCache]: Analyzing trace with hash 482300055, now seen corresponding path program 1 times [2020-10-12 18:21:59,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:21:59,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833063308] [2020-10-12 18:21:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:21:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:21:59,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:59,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:59,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:59,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:21:59,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:00,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:00,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 18:22:00,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:22:00,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1398 [2020-10-12 18:22:00,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:00,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:22:00,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 18:22:00,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 18:22:00,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:00,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:22:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:00,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:00,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:00,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:22:00,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:00,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:22:00,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:00,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:22:00,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:00,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:22:00,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:00,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:22:00,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:00,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:00,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:00,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:00,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:00,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:22:00,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:22:00,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-12 18:22:00,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:00,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:22:00,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 18:22:00,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:00,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:00,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:00,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:00,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:22:00,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:00,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:22:00,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:22:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:00,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:22:00,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:00,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:22:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:00,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:00,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:01,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:01,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:22:01,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:22:01,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 18:22:01,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:22:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:01,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:22:01,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:01,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:01,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:01,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:01,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:22:01,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:01,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:22:01,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:01,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:22:01,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:01,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:22:01,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:22:01,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:22:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:01,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:01,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:01,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:22:01,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:01,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:22:01,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:01,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:22:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:22:01,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:22:01,196 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 18:22:01,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833063308] [2020-10-12 18:22:01,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:22:01,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:22:01,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562146253] [2020-10-12 18:22:01,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:22:01,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:22:01,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:22:01,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:22:01,202 INFO L87 Difference]: Start difference. First operand 51 states and 79 transitions. Second operand 13 states. [2020-10-12 18:22:01,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:22:01,317 INFO L93 Difference]: Finished difference Result 74 states and 124 transitions. [2020-10-12 18:22:01,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:22:01,317 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-10-12 18:22:01,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:22:01,319 INFO L225 Difference]: With dead ends: 74 [2020-10-12 18:22:01,320 INFO L226 Difference]: Without dead ends: 70 [2020-10-12 18:22:01,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:22:01,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-12 18:22:01,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 56. [2020-10-12 18:22:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-12 18:22:01,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 92 transitions. [2020-10-12 18:22:01,348 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 92 transitions. Word has length 40 [2020-10-12 18:22:01,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:22:01,350 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 92 transitions. [2020-10-12 18:22:01,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:22:01,350 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 92 transitions. [2020-10-12 18:22:01,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 18:22:01,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:22:01,354 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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, 1, 1] [2020-10-12 18:22:01,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:22:01,355 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:22:01,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:22:01,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1818500623, now seen corresponding path program 1 times [2020-10-12 18:22:01,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:22:01,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197630958] [2020-10-12 18:22:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:22:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:01,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:01,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:01,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:01,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:01,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:01,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:01,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:01,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:01,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:01,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:02,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:06,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:06,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 18:22:06,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 18:22:06,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 18:22:06,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:06,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:22:06,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 18:22:06,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:22:06,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:22:06,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:22:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:06,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:06,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:06,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:22:06,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:22:06,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:22:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:06,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:22:06,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:06,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:22:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:06,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:06,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:06,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:06,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:06,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:06,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:06,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:07,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:07,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:22:07,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 18:22:07,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 812 [2020-10-12 18:22:07,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:07,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:22:07,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:07,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:22:07,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:07,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:07,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:07,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:07,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:22:07,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:07,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:22:07,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:07,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:22:07,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:07,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:22:07,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:07,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:22:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:07,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:07,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:07,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:07,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:07,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:07,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 18:22:07,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:22:07,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-12 18:22:07,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:07,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:22:07,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:07,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:22:07,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:07,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:07,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:07,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:07,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:22:07,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:07,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:22:07,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:07,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:22:07,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:07,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:22:07,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:07,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:22:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:07,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:07,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:07,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:22:07,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:07,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:22:07,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:07,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:22:07,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:07,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:22:07,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:22:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 18:22:07,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197630958] [2020-10-12 18:22:07,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:22:07,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:22:07,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479865667] [2020-10-12 18:22:07,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:22:07,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:22:07,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:22:07,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:22:07,552 INFO L87 Difference]: Start difference. First operand 56 states and 92 transitions. Second operand 13 states. [2020-10-12 18:22:07,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:22:07,713 INFO L93 Difference]: Finished difference Result 78 states and 139 transitions. [2020-10-12 18:22:07,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:22:07,714 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-12 18:22:07,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:22:07,717 INFO L225 Difference]: With dead ends: 78 [2020-10-12 18:22:07,718 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 18:22:07,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:22:07,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 18:22:07,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 57. [2020-10-12 18:22:07,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 18:22:07,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 92 transitions. [2020-10-12 18:22:07,754 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 92 transitions. Word has length 41 [2020-10-12 18:22:07,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:22:07,756 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 92 transitions. [2020-10-12 18:22:07,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:22:07,756 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 92 transitions. [2020-10-12 18:22:07,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 18:22:07,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:22:07,759 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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, 1, 1] [2020-10-12 18:22:07,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:22:07,759 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:22:07,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:22:07,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1870215323, now seen corresponding path program 2 times [2020-10-12 18:22:07,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:22:07,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400259507] [2020-10-12 18:22:07,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:22:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:07,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:07,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:07,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:07,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:08,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:08,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:08,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 18:22:08,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:22:08,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 744 [2020-10-12 18:22:08,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:22:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 18:22:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:22:08,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:08,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:22:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:08,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:08,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:08,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:22:08,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:08,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:22:08,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:22:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:08,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:22:08,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:08,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:22:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:08,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:08,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:08,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:08,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:08,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:08,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:22:08,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:22:08,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-12 18:22:08,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:08,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:22:08,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:08,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:22:08,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:08,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:08,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:08,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:08,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:22:08,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:08,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:22:08,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:08,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:22:08,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:08,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:22:08,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:08,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:22:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:08,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:08,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:08,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 18:22:08,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:08,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 18:22:08,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:08,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:22:08,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:08,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:22:08,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:08,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:08,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:08,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:08,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:22:08,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:08,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:22:08,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:08,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:22:08,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:08,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:22:08,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:08,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:22:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:08,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:08,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:08,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:22:08,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:08,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:22:08,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:22:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:08,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:22:08,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:08,909 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 18:22:08,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400259507] [2020-10-12 18:22:08,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:22:08,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 18:22:08,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894664851] [2020-10-12 18:22:08,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:22:08,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:22:08,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:22:08,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:22:08,918 INFO L87 Difference]: Start difference. First operand 57 states and 92 transitions. Second operand 12 states. [2020-10-12 18:22:09,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:22:09,015 INFO L93 Difference]: Finished difference Result 85 states and 157 transitions. [2020-10-12 18:22:09,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:22:09,016 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-12 18:22:09,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:22:09,024 INFO L225 Difference]: With dead ends: 85 [2020-10-12 18:22:09,024 INFO L226 Difference]: Without dead ends: 81 [2020-10-12 18:22:09,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:22:09,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-12 18:22:09,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 68. [2020-10-12 18:22:09,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-12 18:22:09,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 128 transitions. [2020-10-12 18:22:09,059 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 128 transitions. Word has length 41 [2020-10-12 18:22:09,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:22:09,061 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 128 transitions. [2020-10-12 18:22:09,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:22:09,061 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 128 transitions. [2020-10-12 18:22:09,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 18:22:09,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:22:09,065 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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] [2020-10-12 18:22:09,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 18:22:09,066 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:22:09,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:22:09,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1904967937, now seen corresponding path program 1 times [2020-10-12 18:22:09,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:22:09,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102544303] [2020-10-12 18:22:09,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:22:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:09,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:09,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:09,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:09,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:09,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:09,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:09,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:09,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:09,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:09,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:10,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:22:10,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 18:22:10,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1138 [2020-10-12 18:22:10,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:22:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:22:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 18:22:10,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:10,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:22:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:10,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:10,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:22:10,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:10,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:22:10,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:22:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:10,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:22:10,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:10,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:22:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:10,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:10,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:22:10,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 18:22:10,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-12 18:22:10,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:10,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:22:10,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:22:10,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 18:22:10,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:10,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:10,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:10,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:22:10,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:10,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:22:10,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:10,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:22:10,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:10,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:22:10,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:10,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:22:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:10,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:10,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:22:10,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:22:10,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 18:22:10,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:10,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:22:10,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:10,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:22:10,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:10,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:10,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:10,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:22:10,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:10,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:22:10,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:22:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:22:10,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:10,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:22:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:10,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:10,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:10,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:22:10,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:22:10,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:22:10,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:22:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:22:10,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 18:22:10,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102544303] [2020-10-12 18:22:10,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:22:10,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:22:10,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611099349] [2020-10-12 18:22:10,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:22:10,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:22:10,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:22:10,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:22:10,839 INFO L87 Difference]: Start difference. First operand 68 states and 128 transitions. Second operand 9 states. [2020-10-12 18:22:10,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:22:10,978 INFO L93 Difference]: Finished difference Result 83 states and 164 transitions. [2020-10-12 18:22:10,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:22:10,979 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-10-12 18:22:10,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:22:10,980 INFO L225 Difference]: With dead ends: 83 [2020-10-12 18:22:10,980 INFO L226 Difference]: Without dead ends: 79 [2020-10-12 18:22:10,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:22:10,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-12 18:22:10,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2020-10-12 18:22:10,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-12 18:22:10,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 143 transitions. [2020-10-12 18:22:10,991 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 143 transitions. Word has length 42 [2020-10-12 18:22:10,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:22:10,992 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 143 transitions. [2020-10-12 18:22:10,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:22:10,992 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 143 transitions. [2020-10-12 18:22:10,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 18:22:10,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:22:10,993 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:22:10,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 18:22:10,994 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:22:10,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:22:10,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1583289828, now seen corresponding path program 1 times [2020-10-12 18:22:10,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:22:10,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330855439] [2020-10-12 18:22:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:22:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:11,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:11,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:11,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:11,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:11,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:11,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:11,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:11,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:12,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:15,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:16,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 18:22:16,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 18:22:16,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:22:16,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:16,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:22:16,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 18:22:16,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:22:16,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:16,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:22:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:16,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:16,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:16,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:22:16,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:16,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:22:16,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:16,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:22:16,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:16,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:22:16,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:16,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:22:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:16,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:16,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:16,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:16,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:16,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:16,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:16,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:18,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 18:22:18,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 18:22:18,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2021 [2020-10-12 18:22:18,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:18,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:22:18,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:18,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 18:22:18,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:18,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:18,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:18,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:22:18,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:18,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:22:18,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:18,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:22:18,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:18,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:22:18,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:18,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:22:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:18,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:18,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 18:22:18,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:22:18,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-12 18:22:18,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:18,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:22:18,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:18,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 18:22:18,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:18,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:18,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:18,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:22:18,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:22:18,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 18:22:18,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:18,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:22:18,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:18,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:22:18,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:18,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:18,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:18,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:22:18,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:18,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:22:18,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:18,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:22:18,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:18,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:22:18,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:18,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:22:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:18,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:18,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:22:18,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:18,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:22:18,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:22:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:18,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:22:18,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:18,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 18:22:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:18,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:18,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:22:18,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:18,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:22:18,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:18,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:22:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:18,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:22:18,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 18:22:18,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330855439] [2020-10-12 18:22:18,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:22:18,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 18:22:18,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658264568] [2020-10-12 18:22:18,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 18:22:18,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:22:18,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 18:22:18,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:22:18,608 INFO L87 Difference]: Start difference. First operand 74 states and 143 transitions. Second operand 16 states. [2020-10-12 18:22:18,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:22:18,697 INFO L93 Difference]: Finished difference Result 112 states and 239 transitions. [2020-10-12 18:22:18,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 18:22:18,697 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-10-12 18:22:18,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:22:18,699 INFO L225 Difference]: With dead ends: 112 [2020-10-12 18:22:18,699 INFO L226 Difference]: Without dead ends: 108 [2020-10-12 18:22:18,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:22:18,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-12 18:22:18,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 88. [2020-10-12 18:22:18,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-12 18:22:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 197 transitions. [2020-10-12 18:22:18,721 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 197 transitions. Word has length 53 [2020-10-12 18:22:18,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:22:18,722 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 197 transitions. [2020-10-12 18:22:18,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 18:22:18,722 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 197 transitions. [2020-10-12 18:22:18,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 18:22:18,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:22:18,725 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:22:18,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 18:22:18,725 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:22:18,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:22:18,725 INFO L82 PathProgramCache]: Analyzing trace with hash 2105856894, now seen corresponding path program 2 times [2020-10-12 18:22:18,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:22:18,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233181030] [2020-10-12 18:22:18,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:22:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:18,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:18,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:19,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:22,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:23,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:23,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 18:22:23,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 18:22:23,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 18:22:23,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:23,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:22:23,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 18:22:23,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 18:22:23,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:23,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:22:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:23,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:23,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:23,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:22:23,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:23,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:22:23,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:23,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:22:23,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:23,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:22:23,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:23,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:22:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:23,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:23,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:23,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:23,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:23,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:23,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:24,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:24,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:24,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:24,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:26,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:26,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 18:22:26,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 18:22:26,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2924 [2020-10-12 18:22:26,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:26,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:22:26,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:26,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 18:22:26,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:26,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:26,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:26,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:26,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:22:26,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:26,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:22:26,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:22:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:22:26,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:26,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:22:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:26,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:26,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:26,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:26,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:26,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:27,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:27,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:22:27,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:22:27,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-12 18:22:27,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:22:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:22:27,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:27,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:27,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:27,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:27,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:22:27,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:27,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:22:27,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:22:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:27,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:22:27,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:27,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:22:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:27,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:27,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:27,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 18:22:27,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:27,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:22:27,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:27,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:22:27,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:27,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:22:27,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:27,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:27,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:27,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:27,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:22:27,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:27,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:22:27,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:22:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:22:27,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:27,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:22:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:27,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:27,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:27,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:22:27,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:27,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:22:27,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:27,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:22:27,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:27,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:22:27,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-12 18:22:27,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233181030] [2020-10-12 18:22:27,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:22:27,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:22:27,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910608282] [2020-10-12 18:22:27,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:22:27,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:22:27,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:22:27,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:22:27,177 INFO L87 Difference]: Start difference. First operand 88 states and 197 transitions. Second operand 15 states. [2020-10-12 18:22:27,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:22:27,290 INFO L93 Difference]: Finished difference Result 125 states and 289 transitions. [2020-10-12 18:22:27,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:22:27,292 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-12 18:22:27,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:22:27,294 INFO L225 Difference]: With dead ends: 125 [2020-10-12 18:22:27,294 INFO L226 Difference]: Without dead ends: 121 [2020-10-12 18:22:27,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:22:27,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-12 18:22:27,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 102. [2020-10-12 18:22:27,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-12 18:22:27,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 246 transitions. [2020-10-12 18:22:27,310 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 246 transitions. Word has length 53 [2020-10-12 18:22:27,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:22:27,311 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 246 transitions. [2020-10-12 18:22:27,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:22:27,311 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 246 transitions. [2020-10-12 18:22:27,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 18:22:27,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:22:27,313 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:22:27,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 18:22:27,313 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:22:27,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:22:27,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1201395334, now seen corresponding path program 3 times [2020-10-12 18:22:27,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:22:27,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968389712] [2020-10-12 18:22:27,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:22:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:27,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:27,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:27,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:27,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:27,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:27,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:27,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:27,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:29,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:32,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:32,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 18:22:32,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 18:22:32,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:22:32,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:32,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:22:32,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 18:22:32,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:22:32,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:32,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:22:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:32,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:32,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:32,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:22:32,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:32,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:22:32,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:32,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:22:32,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:32,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:22:32,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:32,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:22:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:32,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:32,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:32,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:32,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:32,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:32,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:34,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:34,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 18:22:34,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:22:34,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2072 [2020-10-12 18:22:34,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:34,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:22:34,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:34,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 18:22:34,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:34,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:34,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:34,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:34,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:22:34,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:34,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:22:34,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:34,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:22:34,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:22:34,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:34,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:22:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:34,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:34,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:34,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:34,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:34,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:34,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 18:22:34,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:22:34,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-12 18:22:34,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:34,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:22:34,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:34,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 18:22:34,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:34,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:34,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:34,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:34,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:22:34,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:34,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:22:34,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:34,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:22:34,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:34,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:22:34,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:34,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:22:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:34,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:34,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:34,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:35,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:22:35,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:22:35,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 18:22:35,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:35,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:22:35,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:35,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:22:35,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:35,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:35,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:35,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:35,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:22:35,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:35,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:22:35,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:35,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:22:35,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:35,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:22:35,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:35,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:22:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:35,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:35,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:35,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:22:35,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:35,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:22:35,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:35,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:22:35,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:35,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:22:35,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 18:22:35,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968389712] [2020-10-12 18:22:35,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:22:35,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:22:35,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809043674] [2020-10-12 18:22:35,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:22:35,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:22:35,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:22:35,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:22:35,066 INFO L87 Difference]: Start difference. First operand 102 states and 246 transitions. Second operand 15 states. [2020-10-12 18:22:35,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:22:35,204 INFO L93 Difference]: Finished difference Result 142 states and 360 transitions. [2020-10-12 18:22:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 18:22:35,205 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-12 18:22:35,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:22:35,207 INFO L225 Difference]: With dead ends: 142 [2020-10-12 18:22:35,207 INFO L226 Difference]: Without dead ends: 138 [2020-10-12 18:22:35,208 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:22:35,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-12 18:22:35,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 86. [2020-10-12 18:22:35,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-12 18:22:35,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 188 transitions. [2020-10-12 18:22:35,227 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 188 transitions. Word has length 53 [2020-10-12 18:22:35,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:22:35,228 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 188 transitions. [2020-10-12 18:22:35,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:22:35,228 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 188 transitions. [2020-10-12 18:22:35,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 18:22:35,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:22:35,230 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:22:35,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 18:22:35,230 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:22:35,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:22:35,230 INFO L82 PathProgramCache]: Analyzing trace with hash -521781538, now seen corresponding path program 4 times [2020-10-12 18:22:35,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:22:35,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100533879] [2020-10-12 18:22:35,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:22:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:35,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:35,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:35,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:35,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:35,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:35,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:35,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:35,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:35,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:35,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:35,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:36,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:36,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:36,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:36,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:40,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:40,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 18:22:40,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 18:22:40,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:22:40,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:22:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:22:40,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 18:22:40,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:40,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:22:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:40,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:40,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:40,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:22:40,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:40,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:22:40,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:40,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:22:40,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:40,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:22:40,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:40,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:22:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:40,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:40,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:40,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:40,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:40,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:40,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:40,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:40,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:40,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:40,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:40,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:41,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:41,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:41,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:45,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:45,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:22:45,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 18:22:45,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 18:22:45,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:45,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:22:45,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:22:45,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:22:45,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:45,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:45,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:45,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:45,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:22:45,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:45,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:22:45,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:45,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:22:45,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:45,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:22:45,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:45,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:22:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:45,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:45,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:45,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:45,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:45,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:45,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:45,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:45,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:46,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:22:46,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 18:22:46,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 864 [2020-10-12 18:22:46,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:22:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:46,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:22:46,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:46,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:46,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:46,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:22:46,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:46,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:22:46,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:22:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:22:46,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:46,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:22:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:46,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:46,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 18:22:46,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:22:46,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-12 18:22:46,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:46,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:22:46,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:46,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 18:22:46,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:46,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:46,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:46,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:22:46,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:22:46,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:22:46,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:46,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:22:46,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:46,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:22:46,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:46,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:22:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:46,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:46,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:22:46,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:46,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:22:46,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:46,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:22:46,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:46,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:22:46,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 22 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 18:22:46,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100533879] [2020-10-12 18:22:46,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:22:46,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:22:46,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27673692] [2020-10-12 18:22:46,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:22:46,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:22:46,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:22:46,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:22:46,316 INFO L87 Difference]: Start difference. First operand 86 states and 188 transitions. Second operand 13 states. [2020-10-12 18:22:46,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:22:46,617 INFO L93 Difference]: Finished difference Result 217 states and 618 transitions. [2020-10-12 18:22:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:22:46,619 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-12 18:22:46,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:22:46,627 INFO L225 Difference]: With dead ends: 217 [2020-10-12 18:22:46,627 INFO L226 Difference]: Without dead ends: 137 [2020-10-12 18:22:46,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:22:46,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-12 18:22:46,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 129. [2020-10-12 18:22:46,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-12 18:22:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 339 transitions. [2020-10-12 18:22:46,668 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 339 transitions. Word has length 54 [2020-10-12 18:22:46,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:22:46,669 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 339 transitions. [2020-10-12 18:22:46,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:22:46,669 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 339 transitions. [2020-10-12 18:22:46,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 18:22:46,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:22:46,672 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:22:46,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 18:22:46,672 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:22:46,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:22:46,673 INFO L82 PathProgramCache]: Analyzing trace with hash 102341336, now seen corresponding path program 5 times [2020-10-12 18:22:46,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:22:46,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620232114] [2020-10-12 18:22:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:22:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:46,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:47,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:48,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:51,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:51,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 18:22:51,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 18:22:51,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:22:51,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:22:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 18:22:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 18:22:51,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:51,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:22:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:51,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:51,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:51,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:22:51,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:51,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:22:51,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:51,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:22:51,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:51,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:22:51,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:51,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:22:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:51,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:51,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:51,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:51,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:51,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:51,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:51,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:51,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:51,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:53,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:22:53,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 18:22:53,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1412 [2020-10-12 18:22:53,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:22:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:22:53,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:53,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:53,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:53,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:22:53,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:53,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:22:53,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:22:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:53,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:22:53,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:53,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:22:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:53,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:53,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:22:53,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:22:53,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-12 18:22:53,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:53,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:22:53,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:53,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:22:53,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:53,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:53,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:53,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:22:53,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:53,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:22:53,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:22:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:22:53,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:53,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:22:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:53,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:53,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 18:22:53,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:53,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 18:22:53,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:53,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:22:53,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:53,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:22:53,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:53,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:22:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:53,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:53,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:22:53,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:53,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:22:53,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:22:53,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:53,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:22:53,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:53,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:22:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:53,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:53,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:22:53,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:53,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:22:53,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:53,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:22:53,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:53,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:22:53,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-12 18:22:53,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620232114] [2020-10-12 18:22:53,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:22:53,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 18:22:53,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371973161] [2020-10-12 18:22:53,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 18:22:53,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:22:53,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 18:22:53,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:22:53,561 INFO L87 Difference]: Start difference. First operand 129 states and 339 transitions. Second operand 16 states. [2020-10-12 18:22:53,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:22:53,698 INFO L93 Difference]: Finished difference Result 191 states and 535 transitions. [2020-10-12 18:22:53,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 18:22:53,698 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-10-12 18:22:53,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:22:53,702 INFO L225 Difference]: With dead ends: 191 [2020-10-12 18:22:53,703 INFO L226 Difference]: Without dead ends: 187 [2020-10-12 18:22:53,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:22:53,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-12 18:22:53,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 146. [2020-10-12 18:22:53,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-12 18:22:53,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 410 transitions. [2020-10-12 18:22:53,725 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 410 transitions. Word has length 54 [2020-10-12 18:22:53,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:22:53,725 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 410 transitions. [2020-10-12 18:22:53,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 18:22:53,726 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 410 transitions. [2020-10-12 18:22:53,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 18:22:53,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:22:53,728 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:22:53,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 18:22:53,729 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:22:53,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:22:53,729 INFO L82 PathProgramCache]: Analyzing trace with hash 447406468, now seen corresponding path program 6 times [2020-10-12 18:22:53,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:22:53,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470557823] [2020-10-12 18:22:53,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:22:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:53,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:53,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:54,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:54,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:54,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:55,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:55,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:55,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:55,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:58,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:58,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 18:22:58,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 18:22:58,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:22:58,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:58,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:22:58,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:22:58,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 18:22:58,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:58,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:22:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:58,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:58,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:22:58,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:22:58,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:22:58,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:22:58,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:22:58,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:22:58,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:22:58,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:22:58,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:22:58,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:22:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:22:58,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:58,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:58,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:58,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:58,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:58,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:58,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:58,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:58,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:58,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:59,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:59,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:22:59,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:03,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:03,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 18:23:03,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 18:23:03,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:23:03,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:03,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:23:03,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 18:23:03,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 18:23:03,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:03,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:03,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:03,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:03,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:03,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:23:03,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:03,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:23:03,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:03,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:23:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:23:03,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:03,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:23:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:03,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:03,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:03,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:03,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:03,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:03,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:03,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:03,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:03,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:04,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:04,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:04,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:05,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:05,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:23:05,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 18:23:05,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1761 [2020-10-12 18:23:05,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:23:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:23:05,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:23:05,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:05,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:05,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:05,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:05,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:05,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:05,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:05,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:05,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 18:23:05,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:23:05,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 18:23:05,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:05,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:23:05,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:05,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 18:23:05,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:05,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:05,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:05,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:05,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:23:05,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:05,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:23:05,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:05,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:23:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:23:05,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:23:05,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:23:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:05,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:05,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:05,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:05,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:23:05,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:23:05,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:23:05,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:23:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:23:05,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:23:05,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:23:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:05,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:05,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:05,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:23:05,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:05,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:23:05,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:23:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:05,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:23:05,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:23:05,715 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 18:23:05,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470557823] [2020-10-12 18:23:05,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:23:05,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 18:23:05,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510837159] [2020-10-12 18:23:05,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:23:05,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:23:05,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:23:05,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:23:05,726 INFO L87 Difference]: Start difference. First operand 146 states and 410 transitions. Second operand 11 states. [2020-10-12 18:23:06,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:23:06,015 INFO L93 Difference]: Finished difference Result 306 states and 1143 transitions. [2020-10-12 18:23:06,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:23:06,015 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-10-12 18:23:06,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:23:06,019 INFO L225 Difference]: With dead ends: 306 [2020-10-12 18:23:06,020 INFO L226 Difference]: Without dead ends: 166 [2020-10-12 18:23:06,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:23:06,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-12 18:23:06,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 127. [2020-10-12 18:23:06,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-12 18:23:06,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 320 transitions. [2020-10-12 18:23:06,049 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 320 transitions. Word has length 53 [2020-10-12 18:23:06,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:23:06,049 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 320 transitions. [2020-10-12 18:23:06,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:23:06,049 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 320 transitions. [2020-10-12 18:23:06,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 18:23:06,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:23:06,052 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:23:06,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 18:23:06,052 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:23:06,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:23:06,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1444454744, now seen corresponding path program 7 times [2020-10-12 18:23:06,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:23:06,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924321170] [2020-10-12 18:23:06,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:23:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:06,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:06,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:06,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:06,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:06,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:06,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:06,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:06,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:06,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:06,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:06,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:06,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:08,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:11,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:11,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 18:23:11,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 18:23:11,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:23:11,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:11,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:23:11,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-12 18:23:11,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 18:23:11,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:11,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:23:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:11,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:11,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:11,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:23:11,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:11,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:23:11,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:11,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:23:11,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:11,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:23:11,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:11,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:23:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:11,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:11,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:11,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:11,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:11,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:11,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:11,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:11,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:11,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:13,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:13,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:23:13,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 18:23:13,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2197 [2020-10-12 18:23:13,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:13,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:23:13,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:13,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:23:13,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:13,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:13,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:13,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:13,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:23:13,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:13,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:23:13,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:13,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:23:13,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:13,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:23:13,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:13,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:23:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:13,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:13,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:13,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:13,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:13,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:13,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:13,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:23:13,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:23:13,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-12 18:23:13,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:13,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:23:13,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:13,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:23:13,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:13,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:13,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:13,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:13,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 18:23:13,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:13,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:23:13,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:23:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:23:13,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:13,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:13,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:13,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:13,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:23:13,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:13,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:23:13,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:13,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:23:13,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:13,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:23:13,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:13,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:23:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:13,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:13,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:13,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:23:13,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:13,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:23:13,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:13,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:23:13,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:13,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:23:13,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:13,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:23:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:13,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:13,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:23:13,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:13,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:23:13,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:23:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:23:13,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 18:23:13,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924321170] [2020-10-12 18:23:13,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:23:13,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:23:13,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371621506] [2020-10-12 18:23:13,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:23:13,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:23:13,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:23:13,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:23:13,803 INFO L87 Difference]: Start difference. First operand 127 states and 320 transitions. Second operand 15 states. [2020-10-12 18:23:13,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:23:13,904 INFO L93 Difference]: Finished difference Result 191 states and 547 transitions. [2020-10-12 18:23:13,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:23:13,904 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-10-12 18:23:13,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:23:13,912 INFO L225 Difference]: With dead ends: 191 [2020-10-12 18:23:13,912 INFO L226 Difference]: Without dead ends: 187 [2020-10-12 18:23:13,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:23:13,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-12 18:23:13,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 141. [2020-10-12 18:23:13,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-12 18:23:13,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 377 transitions. [2020-10-12 18:23:13,950 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 377 transitions. Word has length 54 [2020-10-12 18:23:13,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:23:13,950 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 377 transitions. [2020-10-12 18:23:13,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:23:13,950 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 377 transitions. [2020-10-12 18:23:13,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 18:23:13,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:23:13,957 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:23:13,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 18:23:13,958 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:23:13,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:23:13,958 INFO L82 PathProgramCache]: Analyzing trace with hash 156462085, now seen corresponding path program 2 times [2020-10-12 18:23:13,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:23:13,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580587759] [2020-10-12 18:23:13,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:23:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:13,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:13,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:13,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:13,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:14,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:14,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:14,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:14,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:14,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:14,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:14,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:14,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:18,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:18,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 18:23:18,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 18:23:18,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:23:18,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:18,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:23:18,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:23:18,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:23:18,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:18,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:23:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:18,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:18,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:18,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:23:18,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:18,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:23:18,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:18,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:23:18,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:18,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:23:18,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:18,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:23:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:18,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:19,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:19,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:19,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:19,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:19,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:19,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:19,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:19,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:19,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:19,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:22,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:24,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:24,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 18:23:24,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 18:23:24,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:23:24,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:24,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:23:24,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 18:23:24,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:23:24,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:24,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:24,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:24,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:24,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:23:24,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:24,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:23:24,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:24,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:23:24,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:24,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:23:24,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:24,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:23:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:24,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:24,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:24,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:24,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:24,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:24,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:24,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:24,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:24,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:24,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:24,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:24,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:26,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:26,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 18:23:26,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 18:23:26,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2908 [2020-10-12 18:23:26,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:26,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:23:26,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 18:23:26,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 18:23:26,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:26,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:26,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:26,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:26,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:23:26,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:26,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:23:26,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:26,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:23:26,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:26,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:23:26,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:26,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:23:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:26,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:26,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:27,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:23:27,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:23:27,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-12 18:23:27,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:23:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:23:27,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:23:27,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:27,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:27,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:27,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:23:27,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:23:27,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:23:27,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:23:27,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:27,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:23:27,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:27,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:23:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:27,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:27,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:23:27,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:23:27,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 18:23:27,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:27,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:23:27,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:23:27,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:23:27,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:27,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:27,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:27,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:23:27,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:27,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:23:27,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:23:27,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:23:27,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:23:27,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:27,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:23:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:27,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:27,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:23:27,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:27,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:23:27,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:27,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:23:27,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 18:23:27,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:23:27,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 30 proven. 21 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-12 18:23:27,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580587759] [2020-10-12 18:23:27,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:23:27,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:23:27,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63986762] [2020-10-12 18:23:27,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:23:27,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:23:27,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:23:27,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:23:27,456 INFO L87 Difference]: Start difference. First operand 141 states and 377 transitions. Second operand 13 states. [2020-10-12 18:23:27,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:23:27,737 INFO L93 Difference]: Finished difference Result 265 states and 832 transitions. [2020-10-12 18:23:27,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 18:23:27,737 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-10-12 18:23:27,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:23:27,740 INFO L225 Difference]: With dead ends: 265 [2020-10-12 18:23:27,740 INFO L226 Difference]: Without dead ends: 125 [2020-10-12 18:23:27,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:23:27,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-12 18:23:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2020-10-12 18:23:27,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-12 18:23:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 261 transitions. [2020-10-12 18:23:27,762 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 261 transitions. Word has length 67 [2020-10-12 18:23:27,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:23:27,762 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 261 transitions. [2020-10-12 18:23:27,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:23:27,763 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 261 transitions. [2020-10-12 18:23:27,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-12 18:23:27,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:23:27,766 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 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, 1] [2020-10-12 18:23:27,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 18:23:27,766 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:23:27,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:23:27,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1962502433, now seen corresponding path program 1 times [2020-10-12 18:23:27,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:23:27,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961722071] [2020-10-12 18:23:27,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:23:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:27,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:27,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:28,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:29,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:32,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:32,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 18:23:32,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 18:23:32,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 18:23:32,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:23:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 18:23:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:23:32,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:32,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:23:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:32,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:32,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:32,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:23:32,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:32,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:23:32,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:32,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:23:32,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:32,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:23:32,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:32,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:23:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:32,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:32,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:32,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:32,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:32,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:32,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:32,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:33,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:33,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:34,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:23:34,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 18:23:34,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1366 [2020-10-12 18:23:34,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:23:34,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:34,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:23:34,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:34,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:34,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:34,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:23:34,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:23:34,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 18:23:34,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:34,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:23:34,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:23:34,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:34,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:34,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:34,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:23:34,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:34,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:23:34,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:23:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:34,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:23:34,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:34,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:23:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:34,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:34,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:23:34,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:34,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:23:34,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:34,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:23:34,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:34,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:23:34,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:34,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 18:23:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:34,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:34,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:23:34,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:34,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:23:34,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:34,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:23:34,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:34,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:23:34,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 18:23:34,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961722071] [2020-10-12 18:23:34,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:23:34,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 18:23:34,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092568241] [2020-10-12 18:23:34,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:23:34,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:23:34,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:23:34,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:23:34,317 INFO L87 Difference]: Start difference. First operand 119 states and 261 transitions. Second operand 12 states. [2020-10-12 18:23:34,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:23:34,403 INFO L93 Difference]: Finished difference Result 150 states and 349 transitions. [2020-10-12 18:23:34,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:23:34,405 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-12 18:23:34,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:23:34,408 INFO L225 Difference]: With dead ends: 150 [2020-10-12 18:23:34,408 INFO L226 Difference]: Without dead ends: 146 [2020-10-12 18:23:34,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:23:34,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-12 18:23:34,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 126. [2020-10-12 18:23:34,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-12 18:23:34,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 299 transitions. [2020-10-12 18:23:34,423 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 299 transitions. Word has length 41 [2020-10-12 18:23:34,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:23:34,423 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 299 transitions. [2020-10-12 18:23:34,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:23:34,424 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 299 transitions. [2020-10-12 18:23:34,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 18:23:34,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:23:34,425 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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] [2020-10-12 18:23:34,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 18:23:34,425 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:23:34,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:23:34,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1607083547, now seen corresponding path program 2 times [2020-10-12 18:23:34,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:23:34,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700616098] [2020-10-12 18:23:34,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:23:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:34,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:34,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:23:34,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:23:34,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-12 18:23:34,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:34,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:23:34,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:23:34,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:23:34,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:34,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:23:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:34,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:34,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:23:34,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:34,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:23:34,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:34,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:23:34,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:34,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:23:34,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:34,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:23:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:34,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:34,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:23:34,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:23:34,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-12 18:23:34,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:23:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 18:23:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:23:34,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:34,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:34,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:34,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:23:34,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:23:34,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 18:23:34,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:34,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:23:34,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:34,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:23:34,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:34,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:34,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:34,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:23:34,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:34,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:23:34,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:23:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:34,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:23:34,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:34,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:23:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:34,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:34,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:34,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:23:34,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:23:34,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:23:34,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:34,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:23:34,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:34,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:23:34,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:35,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 18:23:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:35,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:35,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:35,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:23:35,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:35,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:23:35,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:35,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:23:35,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:23:35,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:23:35,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:35,043 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 18:23:35,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700616098] [2020-10-12 18:23:35,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:23:35,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:23:35,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352935079] [2020-10-12 18:23:35,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:23:35,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:23:35,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:23:35,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:23:35,045 INFO L87 Difference]: Start difference. First operand 126 states and 299 transitions. Second operand 9 states. [2020-10-12 18:23:35,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:23:35,222 INFO L93 Difference]: Finished difference Result 276 states and 871 transitions. [2020-10-12 18:23:35,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:23:35,222 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-10-12 18:23:35,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:23:35,227 INFO L225 Difference]: With dead ends: 276 [2020-10-12 18:23:35,227 INFO L226 Difference]: Without dead ends: 160 [2020-10-12 18:23:35,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:23:35,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-12 18:23:35,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 150. [2020-10-12 18:23:35,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-12 18:23:35,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 392 transitions. [2020-10-12 18:23:35,254 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 392 transitions. Word has length 42 [2020-10-12 18:23:35,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:23:35,254 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 392 transitions. [2020-10-12 18:23:35,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:23:35,255 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 392 transitions. [2020-10-12 18:23:35,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 18:23:35,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:23:35,256 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:23:35,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 18:23:35,256 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:23:35,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:23:35,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1590762135, now seen corresponding path program 1 times [2020-10-12 18:23:35,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:23:35,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032346164] [2020-10-12 18:23:35,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:23:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:35,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:35,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:35,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:35,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:35,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:35,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:35,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:35,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:35,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:35,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:36,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:36,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:36,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:36,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:36,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:37,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:40,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:40,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 18:23:40,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 18:23:40,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:23:40,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:40,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:23:40,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:23:40,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 18:23:40,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:40,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:23:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:40,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:40,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:40,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:23:40,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:40,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:23:40,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:40,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:23:40,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:40,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:23:40,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:40,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:23:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:40,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:40,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:40,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:40,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:40,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:40,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:40,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:41,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:41,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:43,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:43,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:43,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:43,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:45,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:45,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 18:23:45,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 18:23:45,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:23:45,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:45,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:23:45,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 18:23:45,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 18:23:45,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:45,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:45,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:45,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:45,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:45,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:45,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 18:23:45,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:23:45,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-12 18:23:45,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:45,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:23:45,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:45,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 18:23:45,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:45,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:45,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:45,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:45,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:45,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:23:45,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:23:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:23:45,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:23:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:23:45,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:45,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:23:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:45,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:45,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:45,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:23:45,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:45,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:23:45,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:45,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:23:45,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:45,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:23:45,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:45,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:23:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:45,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:45,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:45,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:45,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:45,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:45,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:45,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:45,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:23:45,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:23:45,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-12 18:23:45,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:45,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:23:45,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 18:23:45,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:23:45,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:45,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:45,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:45,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:45,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:23:45,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:45,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:23:45,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:45,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:23:45,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:45,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:23:45,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:45,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:23:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:45,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:45,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:45,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:45,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:23:45,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:23:45,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 18:23:45,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:45,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:23:45,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:23:45,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:23:45,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:45,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:45,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:45,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:45,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:23:45,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:45,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:23:45,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:45,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:23:45,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:23:45,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:23:45,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:45,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 18:23:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:45,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:45,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:45,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:23:45,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:45,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:23:45,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:23:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 18:23:45,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:23:45,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:45,755 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 29 proven. 27 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-12 18:23:45,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032346164] [2020-10-12 18:23:45,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:23:45,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:23:45,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361185294] [2020-10-12 18:23:45,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:23:45,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:23:45,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:23:45,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:23:45,757 INFO L87 Difference]: Start difference. First operand 150 states and 392 transitions. Second operand 15 states. [2020-10-12 18:23:46,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:23:46,124 INFO L93 Difference]: Finished difference Result 255 states and 791 transitions. [2020-10-12 18:23:46,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 18:23:46,124 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-10-12 18:23:46,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:23:46,126 INFO L225 Difference]: With dead ends: 255 [2020-10-12 18:23:46,126 INFO L226 Difference]: Without dead ends: 111 [2020-10-12 18:23:46,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2020-10-12 18:23:46,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-12 18:23:46,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2020-10-12 18:23:46,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-12 18:23:46,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 181 transitions. [2020-10-12 18:23:46,139 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 181 transitions. Word has length 67 [2020-10-12 18:23:46,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:23:46,139 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 181 transitions. [2020-10-12 18:23:46,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:23:46,140 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 181 transitions. [2020-10-12 18:23:46,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 18:23:46,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:23:46,142 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:23:46,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 18:23:46,142 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:23:46,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:23:46,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1653062642, now seen corresponding path program 1 times [2020-10-12 18:23:46,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:23:46,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032483068] [2020-10-12 18:23:46,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:23:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:46,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:46,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:46,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:46,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:46,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:48,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:48,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:48,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:48,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:48,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:48,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:49,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:49,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:49,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:50,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:50,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:50,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:50,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:50,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:50,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:50,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:50,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:50,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:50,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:51,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:51,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-12 18:23:51,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-12 18:23:51,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 18:23:51,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:23:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 18:23:51,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:23:51,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:51,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:23:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:51,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:51,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:51,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 18:23:51,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:51,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:23:51,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:51,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:23:51,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:51,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:23:51,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:51,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 18:23:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:51,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:51,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:51,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:51,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:51,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:51,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:51,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:51,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:51,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:51,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:51,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:51,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:51,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:51,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:52,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:53,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:53,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:53,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:56,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:56,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-12 18:23:56,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-12 18:23:56,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 18:23:56,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:56,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:23:56,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:23:56,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:23:56,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:56,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:56,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:56,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:56,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:56,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:56,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:56,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:56,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:57,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:57,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:23:57,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 18:23:57,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-10-12 18:23:57,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:23:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 18:23:57,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:57,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:57,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:57,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:57,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:57,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 18:23:57,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:23:57,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 18:23:57,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:57,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:23:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 18:23:57,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:57,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:23:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:57,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:57,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:57,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:23:57,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:57,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:23:57,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:57,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:23:57,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:57,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:23:57,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:23:57,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:23:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:57,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:57,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:57,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:23:57,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:23:57,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:23:57,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:57,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:23:57,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:57,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:23:57,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:23:57,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:23:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:57,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:57,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:57,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:23:57,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:23:57,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:23:57,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:23:57,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:23:57,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:23:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:23:57,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:23:57,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:23:57,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-12 18:23:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:23:57,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:57,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:57,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:57,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:57,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:57,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:57,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:57,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:58,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:23:58,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:02,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:02,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:24:02,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 18:24:02,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:24:02,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:02,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:24:02,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:24:02,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 18:24:02,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:02,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:24:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:02,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:02,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:02,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:02,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:02,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:02,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:02,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:02,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:24:02,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:24:02,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-12 18:24:02,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:24:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 18:24:02,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:02,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:24:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:02,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:02,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:02,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:02,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:02,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 18:24:02,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:24:02,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 18:24:02,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:24:02,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:02,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 18:24:02,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:03,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:24:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:03,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:03,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:03,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:03,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:24:03,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:24:03,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:24:03,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:03,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:24:03,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:03,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:24:03,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:03,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:24:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:03,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:03,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:03,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:24:03,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:03,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:24:03,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:03,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:24:03,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:03,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:24:03,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:03,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:24:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:03,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:03,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:03,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:24:03,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:03,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:24:03,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:24:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:24:03,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:03,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-12 18:24:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:03,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:03,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:03,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 18:24:03,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:03,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:24:03,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:03,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:24:03,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:03,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:24:03,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:03,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-12 18:24:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:03,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:03,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:03,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:24:03,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:03,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:24:03,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:24:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:24:03,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:03,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-12 18:24:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:24:03,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:24:03,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:24:03,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 18:24:03,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:24:03,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:24:03,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:24:03,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:24:03,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:24:03,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:24:03,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:24:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 49 proven. 131 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-12 18:24:03,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032483068] [2020-10-12 18:24:03,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:24:03,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 18:24:03,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073891458] [2020-10-12 18:24:03,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 18:24:03,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:24:03,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 18:24:03,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:24:03,063 INFO L87 Difference]: Start difference. First operand 107 states and 181 transitions. Second operand 19 states. [2020-10-12 18:24:03,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:24:03,487 INFO L93 Difference]: Finished difference Result 206 states and 435 transitions. [2020-10-12 18:24:03,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 18:24:03,488 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 109 [2020-10-12 18:24:03,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:24:03,490 INFO L225 Difference]: With dead ends: 206 [2020-10-12 18:24:03,490 INFO L226 Difference]: Without dead ends: 109 [2020-10-12 18:24:03,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2020-10-12 18:24:03,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-12 18:24:03,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 102. [2020-10-12 18:24:03,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-12 18:24:03,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 148 transitions. [2020-10-12 18:24:03,500 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 148 transitions. Word has length 109 [2020-10-12 18:24:03,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:24:03,500 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 148 transitions. [2020-10-12 18:24:03,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 18:24:03,501 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 148 transitions. [2020-10-12 18:24:03,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 18:24:03,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:24:03,502 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:24:03,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 18:24:03,502 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:24:03,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:24:03,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1156896337, now seen corresponding path program 2 times [2020-10-12 18:24:03,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:24:03,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093620748] [2020-10-12 18:24:03,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:24:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 18:24:03,510 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 18:24:03,510 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 18:24:03,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 18:24:03,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 06:24:03 BoogieIcfgContainer [2020-10-12 18:24:03,540 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 18:24:03,542 INFO L168 Benchmark]: Toolchain (without parser) took 135463.57 ms. Allocated memory was 141.6 MB in the beginning and 727.7 MB in the end (delta: 586.2 MB). Free memory was 103.3 MB in the beginning and 601.4 MB in the end (delta: -498.1 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. [2020-10-12 18:24:03,543 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 18:24:03,544 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.79 ms. Allocated memory is still 141.6 MB. Free memory was 102.9 MB in the beginning and 93.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-10-12 18:24:03,544 INFO L168 Benchmark]: Boogie Preprocessor took 109.97 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 93.4 MB in the beginning and 183.2 MB in the end (delta: -89.8 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-10-12 18:24:03,545 INFO L168 Benchmark]: RCFGBuilder took 246.87 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 170.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-10-12 18:24:03,545 INFO L168 Benchmark]: TraceAbstraction took 134879.23 ms. Allocated memory was 204.5 MB in the beginning and 727.7 MB in the end (delta: 523.2 MB). Free memory was 169.8 MB in the beginning and 601.4 MB in the end (delta: -431.6 MB). Peak memory consumption was 91.6 MB. Max. memory is 7.1 GB. [2020-10-12 18:24:03,548 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 222.79 ms. Allocated memory is still 141.6 MB. Free memory was 102.9 MB in the beginning and 93.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.97 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 93.4 MB in the beginning and 183.2 MB in the end (delta: -89.8 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 246.87 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 170.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 134879.23 ms. Allocated memory was 204.5 MB in the beginning and 727.7 MB in the end (delta: 523.2 MB). Free memory was 169.8 MB in the beginning and 601.4 MB in the end (delta: -431.6 MB). Peak memory consumption was 91.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 39]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L36] int x = 4; [L37] CALL, EXPR fibo1(x) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L37] RET, EXPR fibo1(x) [L37] int result = fibo1(x); [L38] COND TRUE result == 3 [L39] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 134.7s, OverallIterations: 23, TraceHistogramMax: 8, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 730 SDtfs, 296 SDslu, 5208 SDs, 0 SdLazy, 2477 SolverSat, 305 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 653 GetRequests, 361 SyntacticMatches, 4 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 22 MinimizatonAttempts, 348 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 130.0s InterpolantComputationTime, 1078 NumberOfCodeBlocks, 1078 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 988 ConstructedInterpolants, 0 QuantifiedInterpolants, 118399 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 3 PerfectInterpolantSequences, 543/860 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...