/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:15:01,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:15:01,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:15:01,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:15:01,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:15:01,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:15:01,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:15:01,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:15:01,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:15:01,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:15:01,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:15:01,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:15:01,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:15:01,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:15:01,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:15:01,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:15:01,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:15:01,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:15:01,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:15:01,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:15:01,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:15:01,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:15:01,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:15:01,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:15:01,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:15:01,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:15:01,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:15:01,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:15:01,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:15:01,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:15:01,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:15:01,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:15:01,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:15:01,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:15:01,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:15:01,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:15:01,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:15:01,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:15:01,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:15:01,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:15:01,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:15:01,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:15:01,378 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:15:01,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:15:01,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:15:01,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:15:01,381 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:15:01,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:15:01,381 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:15:01,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:15:01,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:15:01,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:15:01,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:15:01,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:15:01,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:15:01,384 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:15:01,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:15:01,384 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:15:01,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:15:01,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:15:01,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:15:01,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:15:01,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:15:01,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:15:01,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:15:01,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:15:01,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:15:01,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:15:01,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:15:01,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:15:01,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:15:01,389 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:15:01,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:15:01,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:15:01,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:15:01,889 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:15:01,889 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:15:01,891 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2020-09-21 12:15:01,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6fe9f42e/d378b5531ca24137b29d452b9fd05fe9/FLAG46fb20bea [2020-09-21 12:15:02,583 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:15:02,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2020-09-21 12:15:02,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6fe9f42e/d378b5531ca24137b29d452b9fd05fe9/FLAG46fb20bea [2020-09-21 12:15:02,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6fe9f42e/d378b5531ca24137b29d452b9fd05fe9 [2020-09-21 12:15:02,861 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:15:02,867 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:15:02,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:15:02,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:15:02,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:15:02,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:15:02" (1/1) ... [2020-09-21 12:15:02,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4365ba2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:02, skipping insertion in model container [2020-09-21 12:15:02,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:15:02" (1/1) ... [2020-09-21 12:15:02,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:15:02,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:15:03,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:15:03,329 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:15:03,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:15:03,588 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:15:03,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:03 WrapperNode [2020-09-21 12:15:03,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:15:03,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:15:03,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:15:03,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:15:03,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:03" (1/1) ... [2020-09-21 12:15:03,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:03" (1/1) ... [2020-09-21 12:15:03,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:03" (1/1) ... [2020-09-21 12:15:03,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:03" (1/1) ... [2020-09-21 12:15:03,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:03" (1/1) ... [2020-09-21 12:15:03,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:03" (1/1) ... [2020-09-21 12:15:03,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:03" (1/1) ... [2020-09-21 12:15:03,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:15:03,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:15:03,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:15:03,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:15:03,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:15:03,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:15:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:15:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 12:15:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 12:15:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 12:15:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 12:15:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 12:15:03,781 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 12:15:03,781 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 12:15:03,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 12:15:03,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 12:15:03,781 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 12:15:03,782 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 12:15:03,782 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 12:15:03,782 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 12:15:03,782 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 12:15:03,782 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 12:15:03,783 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 12:15:03,783 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 12:15:03,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:15:03,784 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 12:15:03,785 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 12:15:03,785 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 12:15:03,785 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 12:15:03,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 12:15:03,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 12:15:03,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 12:15:03,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 12:15:03,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 12:15:03,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 12:15:03,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 12:15:03,787 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 12:15:03,788 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 12:15:03,789 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 12:15:03,789 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 12:15:03,789 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 12:15:03,789 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 12:15:03,789 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 12:15:03,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-21 12:15:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:15:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:15:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:15:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 12:15:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 12:15:03,791 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 12:15:03,791 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 12:15:03,791 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 12:15:03,791 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 12:15:03,791 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 12:15:03,791 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 12:15:03,792 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 12:15:03,792 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 12:15:03,792 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 12:15:03,792 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 12:15:03,792 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 12:15:03,793 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 12:15:03,793 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 12:15:03,793 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-21 12:15:03,793 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 12:15:03,793 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 12:15:03,794 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 12:15:03,794 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 12:15:03,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:15:03,794 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 12:15:03,794 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 12:15:03,794 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 12:15:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 12:15:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 12:15:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 12:15:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:15:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 12:15:03,796 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 12:15:03,797 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 12:15:03,797 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:15:03,798 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:15:03,798 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 12:15:03,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:15:03,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:15:03,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:15:03,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:15:03,799 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 12:15:03,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:15:03,799 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 12:15:03,800 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 12:15:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:15:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 12:15:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 12:15:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 12:15:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 12:15:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:15:03,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 12:15:03,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:15:04,926 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:15:04,926 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:15:04,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:15:04 BoogieIcfgContainer [2020-09-21 12:15:04,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:15:04,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:15:04,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:15:04,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:15:04,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:15:02" (1/3) ... [2020-09-21 12:15:04,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d0ee2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:15:04, skipping insertion in model container [2020-09-21 12:15:04,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:15:03" (2/3) ... [2020-09-21 12:15:04,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d0ee2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:15:04, skipping insertion in model container [2020-09-21 12:15:04,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:15:04" (3/3) ... [2020-09-21 12:15:04,948 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product36.cil.c [2020-09-21 12:15:04,960 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:15:04,972 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:15:04,993 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:15:05,019 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:15:05,020 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:15:05,020 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:15:05,020 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:15:05,020 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:15:05,020 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:15:05,020 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:15:05,020 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:15:05,047 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-09-21 12:15:05,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:15:05,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:05,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:05,060 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:05,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:05,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1806854140, now seen corresponding path program 1 times [2020-09-21 12:15:05,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:05,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465890992] [2020-09-21 12:15:05,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:05,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:05,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:06,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:06,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-21 12:15:06,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:06,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1054 [2020-09-21 12:15:06,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:06,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:06,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 12:15:06,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:06,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-21 12:15:06,894 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:06,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:06,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:06,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:06,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:06,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:06,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-21 12:15:06,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:06,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:06,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:06,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:06,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:07,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:07,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:07,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:07,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:07,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:07,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:07,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:07,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:07,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:07,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:07,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:07,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:07,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:07,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:07,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:07,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:07,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:07,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:07,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:07,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:07,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:07,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:07,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:07,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:07,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:15:07,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:07,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:07,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:07,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:07,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:07,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:07,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:07,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:07,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:07,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:07,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:07,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:07,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:07,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:07,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:07,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:07,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:15:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:07,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:07,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:07,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:07,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:07,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:15:07,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:07,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:07,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:07,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:07,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:15:07,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:15:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:07,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:07,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:07,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:07,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:07,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:07,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:07,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:07,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:07,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:07,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:15:07,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465890992] [2020-09-21 12:15:07,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:07,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:15:07,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299875466] [2020-09-21 12:15:07,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:15:07,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:07,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:15:07,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:15:07,151 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 3 states. [2020-09-21 12:15:08,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:08,284 INFO L93 Difference]: Finished difference Result 278 states and 364 transitions. [2020-09-21 12:15:08,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:15:08,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-21 12:15:08,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:08,305 INFO L225 Difference]: With dead ends: 278 [2020-09-21 12:15:08,305 INFO L226 Difference]: Without dead ends: 151 [2020-09-21 12:15:08,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:15:08,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-21 12:15:08,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 118. [2020-09-21 12:15:08,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-21 12:15:08,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-09-21 12:15:08,415 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 46 [2020-09-21 12:15:08,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:08,416 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-09-21 12:15:08,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:15:08,416 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-09-21 12:15:08,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:15:08,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:08,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:08,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:15:08,424 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:08,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:08,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1793827304, now seen corresponding path program 1 times [2020-09-21 12:15:08,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:08,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538135236] [2020-09-21 12:15:08,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:08,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:08,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:09,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:09,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:09,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:15:09,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:15:09,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1421 [2020-09-21 12:15:09,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:09,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:09,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 12:15:09,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:15:09,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:10,284 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:10,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:10,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:10,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:10,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:10,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:10,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-21 12:15:10,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:10,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:10,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:10,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:10,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:10,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:10,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:10,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:10,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:10,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:10,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:10,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:10,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:10,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:10,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:10,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:10,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:10,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:10,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:10,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:10,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:10,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:10,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:10,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:10,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:10,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:10,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:10,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:10,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:10,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:10,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:10,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:10,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:10,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:10,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:10,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:10,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:10,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:10,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:10,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:10,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:10,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:10,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:10,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:10,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:10,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:10,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:10,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:10,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:10,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:15:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:10,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:10,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:10,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:10,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:10,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:10,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:10,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:10,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:10,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:10,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:10,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 12:15:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:10,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:10,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:10,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:10,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:10,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:10,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:10,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:10,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:10,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:10,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:15:10,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538135236] [2020-09-21 12:15:10,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:10,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:15:10,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607157076] [2020-09-21 12:15:10,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:15:10,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:10,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:15:10,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:15:10,470 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 4 states. [2020-09-21 12:15:11,197 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:11,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:11,984 INFO L93 Difference]: Finished difference Result 198 states and 241 transitions. [2020-09-21 12:15:11,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:15:11,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 12:15:11,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:11,992 INFO L225 Difference]: With dead ends: 198 [2020-09-21 12:15:11,992 INFO L226 Difference]: Without dead ends: 135 [2020-09-21 12:15:11,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:15:11,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-21 12:15:12,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2020-09-21 12:15:12,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-21 12:15:12,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-09-21 12:15:12,035 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 47 [2020-09-21 12:15:12,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:12,035 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-09-21 12:15:12,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:15:12,036 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-09-21 12:15:12,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 12:15:12,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:12,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:12,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:15:12,038 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:12,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:12,039 INFO L82 PathProgramCache]: Analyzing trace with hash 25908157, now seen corresponding path program 1 times [2020-09-21 12:15:12,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:12,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726402317] [2020-09-21 12:15:12,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:12,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:12,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:13,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:13,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 12:15:13,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:13,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-09-21 12:15:13,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:13,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:15:13,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-21 12:15:13,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:13,551 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:13,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:13,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:13,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:13,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:13,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:13,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-21 12:15:13,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:13,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:15:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:13,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:13,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:13,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:13,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:13,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:13,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:13,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:13,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:13,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:13,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:13,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:13,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:13,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:13,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:13,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:13,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:13,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:13,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:13,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:13,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:13,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:13,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:13,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:13,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:13,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:13,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:13,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:13,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:15:13,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:13,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:13,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:13,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:13,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:13,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:13,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:13,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:13,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:13,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:13,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:13,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:13,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:13,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:13,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:15:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:13,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:13,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:13,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:13,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:13,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:13,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:13,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:13,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:13,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 12:15:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:13,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:13,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:13,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:13,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:13,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:13,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:13,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:13,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:13,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:13,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:13,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:15:13,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726402317] [2020-09-21 12:15:13,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:13,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:15:13,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011391197] [2020-09-21 12:15:13,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:15:13,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:13,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:15:13,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:15:13,850 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 4 states. [2020-09-21 12:15:14,177 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:15,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:15,477 INFO L93 Difference]: Finished difference Result 315 states and 385 transitions. [2020-09-21 12:15:15,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:15:15,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-21 12:15:15,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:15,484 INFO L225 Difference]: With dead ends: 315 [2020-09-21 12:15:15,484 INFO L226 Difference]: Without dead ends: 230 [2020-09-21 12:15:15,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:15:15,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-09-21 12:15:15,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 178. [2020-09-21 12:15:15,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-21 12:15:15,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 209 transitions. [2020-09-21 12:15:15,544 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 209 transitions. Word has length 52 [2020-09-21 12:15:15,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:15,544 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 209 transitions. [2020-09-21 12:15:15,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:15:15,544 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 209 transitions. [2020-09-21 12:15:15,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 12:15:15,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:15,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:15,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:15:15,548 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:15,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:15,548 INFO L82 PathProgramCache]: Analyzing trace with hash -388118307, now seen corresponding path program 1 times [2020-09-21 12:15:15,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:15,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887176489] [2020-09-21 12:15:15,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:15,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:16,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:16,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 12:15:16,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:16,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-21 12:15:16,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-21 12:15:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-21 12:15:16,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:17,056 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:17,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:17,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-21 12:15:17,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:17,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:15:17,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:17,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:17,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:17,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:17,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:17,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:17,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:17,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:17,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:17,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:17,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:17,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:17,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:17,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:17,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:15:17,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:17,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:17,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:17,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:17,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:17,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:17,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:17,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:17,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:17,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:15:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:17,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:17,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:17,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:17,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:15:17,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:17,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 12:15:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:17,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:15:17,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:17,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:17,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:17,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 12:15:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:17,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:17,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:17,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:17,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:17,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:17,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:17,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:17,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:17,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:15:17,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887176489] [2020-09-21 12:15:17,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:17,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:15:17,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339940992] [2020-09-21 12:15:17,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:15:17,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:17,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:15:17,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:15:17,456 INFO L87 Difference]: Start difference. First operand 178 states and 209 transitions. Second operand 8 states. [2020-09-21 12:15:18,160 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:19,370 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:19,794 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:15:20,105 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:15:20,466 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:20,906 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:21,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:21,708 INFO L93 Difference]: Finished difference Result 549 states and 720 transitions. [2020-09-21 12:15:21,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:15:21,709 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-09-21 12:15:21,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:21,715 INFO L225 Difference]: With dead ends: 549 [2020-09-21 12:15:21,715 INFO L226 Difference]: Without dead ends: 395 [2020-09-21 12:15:21,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:15:21,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-09-21 12:15:21,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 331. [2020-09-21 12:15:21,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-09-21 12:15:21,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 397 transitions. [2020-09-21 12:15:21,799 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 397 transitions. Word has length 57 [2020-09-21 12:15:21,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:21,800 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 397 transitions. [2020-09-21 12:15:21,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:15:21,800 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 397 transitions. [2020-09-21 12:15:21,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 12:15:21,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:21,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:21,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:15:21,805 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:21,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:21,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1713773635, now seen corresponding path program 1 times [2020-09-21 12:15:21,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:21,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119728405] [2020-09-21 12:15:21,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:21,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:22,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:22,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:22,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 12:15:22,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:22,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-21 12:15:22,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-21 12:15:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:15:22,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:23,240 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:23,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:23,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:23,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:23,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:23,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:23,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-21 12:15:23,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:23,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:23,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:23,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:23,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:23,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:23,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:23,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:23,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:23,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:23,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:23,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:23,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:23,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:23,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:23,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:23,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:23,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:23,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:23,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:23,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:23,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:23,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:23,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:23,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:23,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:23,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:23,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:23,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:23,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:23,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:23,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:23,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:23,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:23,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:23,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:23,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:23,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:23,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:23,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:23,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:23,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:23,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:23,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:15:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:23,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:23,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:23,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:23,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:23,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:15:23,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:15:23,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:23,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:15:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:23,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:23,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:23,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:23,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:23,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:23,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:23,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:23,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:23,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 12:15:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:23,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:23,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:23,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:23,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:23,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:23,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:23,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:23,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:23,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:23,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:23,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 12:15:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:23,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:23,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:23,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:23,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:23,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:23,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:23,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:23,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:23,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:23,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:15:23,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119728405] [2020-09-21 12:15:23,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:23,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:15:23,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802649512] [2020-09-21 12:15:23,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:15:23,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:23,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:15:23,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:15:23,470 INFO L87 Difference]: Start difference. First operand 331 states and 397 transitions. Second operand 6 states. [2020-09-21 12:15:24,040 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:25,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:25,964 INFO L93 Difference]: Finished difference Result 869 states and 1117 transitions. [2020-09-21 12:15:25,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:15:25,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-09-21 12:15:25,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:25,970 INFO L225 Difference]: With dead ends: 869 [2020-09-21 12:15:25,970 INFO L226 Difference]: Without dead ends: 562 [2020-09-21 12:15:25,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:15:25,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-09-21 12:15:26,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 509. [2020-09-21 12:15:26,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-09-21 12:15:26,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 620 transitions. [2020-09-21 12:15:26,087 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 620 transitions. Word has length 61 [2020-09-21 12:15:26,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:26,088 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 620 transitions. [2020-09-21 12:15:26,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:15:26,088 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 620 transitions. [2020-09-21 12:15:26,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 12:15:26,091 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:26,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:26,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:15:26,091 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:26,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:26,092 INFO L82 PathProgramCache]: Analyzing trace with hash 852833187, now seen corresponding path program 1 times [2020-09-21 12:15:26,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:26,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281234909] [2020-09-21 12:15:26,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:26,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:27,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:27,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-21 12:15:27,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:27,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-09-21 12:15:27,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-21 12:15:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-21 12:15:27,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:27,513 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:27,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:27,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:27,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:27,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:27,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:27,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-21 12:15:27,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:27,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:27,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:27,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:15:27,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:27,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:27,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:27,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:27,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:27,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:27,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:27,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:27,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:27,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:27,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:27,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:27,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:27,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:27,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:27,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:27,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:27,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:27,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:27,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:27,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:27,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:27,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:27,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:27,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:27,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:27,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:27,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:27,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:27,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:27,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:27,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:27,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:27,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:27,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:27,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:27,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:27,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:27,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:27,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:27,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:27,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:27,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:15:27,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:27,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:15:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:27,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:27,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:27,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:27,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:27,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:15:27,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:27,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:27,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:15:27,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:15:27,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:27,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:15:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:27,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:27,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:27,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:27,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:27,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:27,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:27,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:27,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:27,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:15:27,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:27,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 12:15:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:27,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:27,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:27,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:27,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:27,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:27,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:27,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:27,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:27,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:27,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 12:15:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:27,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:27,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:27,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:27,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:27,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:27,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:27,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:15:27,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281234909] [2020-09-21 12:15:27,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:27,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 12:15:27,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379815984] [2020-09-21 12:15:27,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 12:15:27,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:27,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 12:15:27,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:15:27,882 INFO L87 Difference]: Start difference. First operand 509 states and 620 transitions. Second operand 11 states. [2020-09-21 12:15:28,748 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:29,501 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:30,217 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:30,552 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:30,886 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 12:15:31,233 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 12:15:31,628 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 12:15:31,943 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 12:15:33,348 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:33,724 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 12:15:34,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:34,657 INFO L93 Difference]: Finished difference Result 1307 states and 1712 transitions. [2020-09-21 12:15:34,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-21 12:15:34,658 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-09-21 12:15:34,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:34,665 INFO L225 Difference]: With dead ends: 1307 [2020-09-21 12:15:34,665 INFO L226 Difference]: Without dead ends: 1019 [2020-09-21 12:15:34,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2020-09-21 12:15:34,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-21 12:15:34,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 933. [2020-09-21 12:15:34,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-09-21 12:15:34,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1121 transitions. [2020-09-21 12:15:34,864 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1121 transitions. Word has length 61 [2020-09-21 12:15:34,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:34,864 INFO L479 AbstractCegarLoop]: Abstraction has 933 states and 1121 transitions. [2020-09-21 12:15:34,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 12:15:34,865 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1121 transitions. [2020-09-21 12:15:34,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-21 12:15:34,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:34,868 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:34,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:15:34,869 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:34,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:34,869 INFO L82 PathProgramCache]: Analyzing trace with hash -2042706554, now seen corresponding path program 1 times [2020-09-21 12:15:34,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:34,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990085028] [2020-09-21 12:15:34,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:34,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:35,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:35,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:35,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-21 12:15:35,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:15:35,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-21 12:15:35,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:35,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:35,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-21 12:15:35,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:15:35,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:36,176 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:36,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:36,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:36,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:36,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:36,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:15:36,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:36,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:36,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:36,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:36,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:36,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:36,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:36,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:36,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:36,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:36,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:36,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:36,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:36,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:36,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:36,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:36,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:36,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:36,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:36,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:36,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:36,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:36,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:36,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:36,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:36,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:36,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:36,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:36,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:36,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:36,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:36,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:36,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:36,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:36,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:36,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:36,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:36,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:36,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:15:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:36,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:36,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:36,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:36,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:36,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:36,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:15:36,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:36,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 12:15:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:36,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:36,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:15:36,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:36,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-21 12:15:36,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:15:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-21 12:15:36,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:36,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:36,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:36,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:15:36,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:36,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-21 12:15:36,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:36,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:36,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:36,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 12:15:36,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:36,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:36,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:36,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:15:36,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:15:36,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 12:15:36,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:36,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:36,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:36,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:36,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:36,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:36,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:36,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:36,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:36,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:36,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:36,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:36,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:15:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:36,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:36,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:36,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:36,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:36,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:36,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:36,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:36,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:36,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:36,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 12:15:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:36,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:36,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:15:36,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:36,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:15:36,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:15:36,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:15:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:36,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:36,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:36,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:36,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:36,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:36,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:36,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:36,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:36,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:36,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-21 12:15:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:36,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:36,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:36,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:36,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:36,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:36,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:36,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-21 12:15:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:36,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:36,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:36,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:36,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:36,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:36,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:36,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:36,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-21 12:15:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:36,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:36,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:36,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:36,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:36,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:36,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:36,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:36,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:36,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:36,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:36,660 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 12:15:36,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990085028] [2020-09-21 12:15:36,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:15:36,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:15:36,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984340333] [2020-09-21 12:15:36,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:15:36,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:36,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:15:36,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:15:36,663 INFO L87 Difference]: Start difference. First operand 933 states and 1121 transitions. Second operand 9 states. [2020-09-21 12:15:37,088 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:37,912 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 12:15:39,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:39,486 INFO L93 Difference]: Finished difference Result 1713 states and 2112 transitions. [2020-09-21 12:15:39,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 12:15:39,487 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-09-21 12:15:39,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:39,493 INFO L225 Difference]: With dead ends: 1713 [2020-09-21 12:15:39,494 INFO L226 Difference]: Without dead ends: 804 [2020-09-21 12:15:39,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-09-21 12:15:39,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2020-09-21 12:15:39,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 680. [2020-09-21 12:15:39,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-09-21 12:15:39,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 797 transitions. [2020-09-21 12:15:39,662 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 797 transitions. Word has length 108 [2020-09-21 12:15:39,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:39,662 INFO L479 AbstractCegarLoop]: Abstraction has 680 states and 797 transitions. [2020-09-21 12:15:39,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:15:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 797 transitions. [2020-09-21 12:15:39,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-21 12:15:39,665 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:39,665 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:39,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:15:39,666 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:39,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:39,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1643767233, now seen corresponding path program 1 times [2020-09-21 12:15:39,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:39,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892615344] [2020-09-21 12:15:39,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:39,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:40,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:40,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-21 12:15:40,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:40,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-09-21 12:15:40,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:40,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:40,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-21 12:15:40,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:40,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:40,550 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:40,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:40,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:40,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:40,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:40,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:40,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-21 12:15:40,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:40,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:40,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:40,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:40,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:40,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:40,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:40,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:40,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:40,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:40,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:40,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:40,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:40,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:40,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:40,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:40,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:40,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:40,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:40,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:40,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:40,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:40,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:40,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:40,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:40,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:40,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:40,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:40,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:40,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:40,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:40,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:40,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:40,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:40,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:40,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:40,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:40,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:40,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:40,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:40,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:40,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:40,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:40,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:40,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:40,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:15:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:40,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:40,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:40,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:15:40,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:40,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-21 12:15:40,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:40,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:40,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:15:40,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:40,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:40,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:40,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:40,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:40,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:15:40,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:40,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:15:40,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:40,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:40,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:15:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:40,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:40,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:40,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:40,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:40,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:15:40,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:40,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:15:40,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:40,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:40,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 12:15:40,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:40,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:40,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:40,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:40,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:40,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:40,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:40,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:40,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:40,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:15:40,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:40,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:15:40,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:40,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:15:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:40,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:40,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:40,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:40,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:40,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:40,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:40,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:40,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:40,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:40,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:40,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 12:15:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:40,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:40,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:40,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:15:40,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:40,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:40,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:40,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:40,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:15:40,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:40,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:40,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:40,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:40,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:40,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:40,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:40,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:40,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:40,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:40,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-21 12:15:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:40,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:40,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:40,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:40,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:40,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:40,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:40,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:40,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:40,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:40,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:40,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-21 12:15:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:40,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:40,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:40,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:15:40,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:40,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:15:40,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:40,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:40,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:15:40,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:40,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:40,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:40,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:40,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:40,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:40,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:40,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:15:40,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:40,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:40,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-21 12:15:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:40,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:40,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:40,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:40,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:40,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:40,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:40,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:40,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:40,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-21 12:15:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:40,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:40,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:40,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:40,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:40,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:40,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:40,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:40,942 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 12:15:40,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892615344] [2020-09-21 12:15:40,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:15:40,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:15:40,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644697152] [2020-09-21 12:15:40,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:15:40,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:40,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:15:40,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:15:40,945 INFO L87 Difference]: Start difference. First operand 680 states and 797 transitions. Second operand 9 states. [2020-09-21 12:15:41,939 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:42,239 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:42,548 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:43,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:43,796 INFO L93 Difference]: Finished difference Result 1426 states and 1753 transitions. [2020-09-21 12:15:43,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:15:43,797 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2020-09-21 12:15:43,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:43,804 INFO L225 Difference]: With dead ends: 1426 [2020-09-21 12:15:43,805 INFO L226 Difference]: Without dead ends: 770 [2020-09-21 12:15:43,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:15:43,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2020-09-21 12:15:43,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 684. [2020-09-21 12:15:43,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2020-09-21 12:15:43,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 799 transitions. [2020-09-21 12:15:43,967 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 799 transitions. Word has length 111 [2020-09-21 12:15:43,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:43,968 INFO L479 AbstractCegarLoop]: Abstraction has 684 states and 799 transitions. [2020-09-21 12:15:43,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:15:43,968 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 799 transitions. [2020-09-21 12:15:43,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-21 12:15:43,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:43,972 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:43,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:15:43,972 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:43,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:43,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1698160131, now seen corresponding path program 1 times [2020-09-21 12:15:43,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:43,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731092474] [2020-09-21 12:15:43,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:44,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:44,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:44,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-21 12:15:44,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:44,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-09-21 12:15:44,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-09-21 12:15:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:15:44,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:44,953 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 12:15:44,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:15:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:44,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:45,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:45,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:45,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:45,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:15:45,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:45,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:45,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:45,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:45,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:45,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:15:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:45,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:45,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:45,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:45,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:45,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:45,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:45,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:45,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:15:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:45,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:45,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:45,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:45,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:45,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:45,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:45,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:45,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:45,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:45,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:45,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:15:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:45,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:45,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:45,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:45,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:45,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:45,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:45,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:45,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:45,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:45,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:45,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:15:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:45,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:45,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:45,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:45,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:45,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:45,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:45,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:45,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:45,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:45,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:45,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:15:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:45,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:45,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:45,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-21 12:15:45,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:45,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-21 12:15:45,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:45,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:45,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 12:15:45,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:15:45,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:45,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:45,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:45,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:45,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:15:45,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:45,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-21 12:15:45,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:45,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:15:45,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:15:45,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:15:45,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:45,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:45,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:45,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:45,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:15:45,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:45,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 12:15:45,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:45,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:15:45,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:45,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:15:45,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:45,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:45,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:45,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:45,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:15:45,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:45,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:15:45,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:45,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:15:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:45,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:45,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:45,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:45,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:45,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:45,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:45,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:45,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:45,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:45,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:45,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 12:15:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:45,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:45,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:45,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:15:45,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:45,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:15:45,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:45,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:45,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:15:45,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:45,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:15:45,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:15:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:45,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:45,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:45,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:45,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:45,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:45,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:45,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:45,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:45,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:45,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:45,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-21 12:15:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:45,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:45,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:45,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:45,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:45,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:15:45,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:45,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:45,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:45,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:45,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:45,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-21 12:15:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:45,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:45,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:45,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:15:45,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:45,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:15:45,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:45,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:45,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:15:45,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:45,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:45,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:15:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:45,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:45,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:45,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:15:45,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:45,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:45,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:45,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:45,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:15:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:45,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:45,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-21 12:15:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:45,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:45,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:45,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:45,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:45,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:15:45,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:45,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:45,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:45,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-21 12:15:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:15:45,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:15:45,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:15:45,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:15:45,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:15:45,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:15:45,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:15:45,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:15:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:15:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:15:45,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:15:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 12:15:45,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731092474] [2020-09-21 12:15:45,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:15:45,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:15:45,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432822673] [2020-09-21 12:15:45,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:15:45,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:15:45,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:15:45,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:15:45,536 INFO L87 Difference]: Start difference. First operand 684 states and 799 transitions. Second operand 10 states. [2020-09-21 12:15:46,669 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:46,922 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 12:15:47,226 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:47,524 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 12:15:48,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:15:48,338 INFO L93 Difference]: Finished difference Result 1351 states and 1618 transitions. [2020-09-21 12:15:48,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:15:48,338 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 111 [2020-09-21 12:15:48,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:15:48,344 INFO L225 Difference]: With dead ends: 1351 [2020-09-21 12:15:48,345 INFO L226 Difference]: Without dead ends: 691 [2020-09-21 12:15:48,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:15:48,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-09-21 12:15:48,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 634. [2020-09-21 12:15:48,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-09-21 12:15:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 732 transitions. [2020-09-21 12:15:48,481 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 732 transitions. Word has length 111 [2020-09-21 12:15:48,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:15:48,482 INFO L479 AbstractCegarLoop]: Abstraction has 634 states and 732 transitions. [2020-09-21 12:15:48,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:15:48,482 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 732 transitions. [2020-09-21 12:15:48,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-21 12:15:48,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:15:48,486 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:15:48,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:15:48,487 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:15:48,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:15:48,487 INFO L82 PathProgramCache]: Analyzing trace with hash 59332245, now seen corresponding path program 1 times [2020-09-21 12:15:48,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:15:48,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633544425] [2020-09-21 12:15:48,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:15:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:15:48,566 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:15:48,566 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:15:48,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:15:48,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:15:48 BoogieIcfgContainer [2020-09-21 12:15:48,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:15:48,633 INFO L168 Benchmark]: Toolchain (without parser) took 45767.39 ms. Allocated memory was 147.3 MB in the beginning and 712.5 MB in the end (delta: 565.2 MB). Free memory was 100.7 MB in the beginning and 85.6 MB in the end (delta: 15.1 MB). Peak memory consumption was 580.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:15:48,634 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:15:48,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.86 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 100.1 MB in the beginning and 174.4 MB in the end (delta: -74.3 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:15:48,643 INFO L168 Benchmark]: Boogie Preprocessor took 109.71 ms. Allocated memory is still 205.0 MB. Free memory was 174.4 MB in the beginning and 170.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:15:48,645 INFO L168 Benchmark]: RCFGBuilder took 1238.05 ms. Allocated memory was 205.0 MB in the beginning and 235.9 MB in the end (delta: 30.9 MB). Free memory was 170.4 MB in the beginning and 199.7 MB in the end (delta: -29.3 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:15:48,648 INFO L168 Benchmark]: TraceAbstraction took 43687.69 ms. Allocated memory was 235.9 MB in the beginning and 712.5 MB in the end (delta: 476.6 MB). Free memory was 198.3 MB in the beginning and 85.6 MB in the end (delta: 112.6 MB). Peak memory consumption was 589.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:15:48,654 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 720.86 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 100.1 MB in the beginning and 174.4 MB in the end (delta: -74.3 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.71 ms. Allocated memory is still 205.0 MB. Free memory was 174.4 MB in the beginning and 170.4 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1238.05 ms. Allocated memory was 205.0 MB in the beginning and 235.9 MB in the end (delta: 30.9 MB). Free memory was 170.4 MB in the beginning and 199.7 MB in the end (delta: -29.3 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 43687.69 ms. Allocated memory was 235.9 MB in the beginning and 712.5 MB in the end (delta: 476.6 MB). Free memory was 198.3 MB in the beginning and 85.6 MB in the end (delta: 112.6 MB). Peak memory consumption was 589.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 437]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L299] int cleanupTimeShifts = 4; [L611] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L809] int waterLevel = 1; [L810] int methaneLevelCritical = 0; [L375] int retValue_acc ; [L376] int tmp ; [L380] FCALL select_helpers() [L381] FCALL select_features() [L382] CALL, EXPR valid_product() [L424] int retValue_acc ; [L427] retValue_acc = 1 [L428] return (retValue_acc); [L382] RET, EXPR valid_product() [L382] tmp = valid_product() [L384] COND TRUE \read(tmp) [L386] FCALL setup() [L387] CALL runTest() [L366] CALL test() [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) [L68] CALL waterRise() [L827] COND TRUE waterLevel < 2 [L828] waterLevel = waterLevel + 1 [L68] RET waterRise() [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND FALSE !(\read(pumpRunning)) [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L160] int tmp ; [L163] COND TRUE ! pumpRunning [L165] CALL, EXPR isHighWaterLevel() [L257] int retValue_acc ; [L258] int tmp ; [L259] int tmp___0 ; [L263] CALL, EXPR isHighWaterSensorDry() [L889] int retValue_acc ; [L892] COND FALSE !(waterLevel < 2) [L896] retValue_acc = 0 [L897] return (retValue_acc); [L263] RET, EXPR isHighWaterSensorDry() [L263] tmp = isHighWaterSensorDry() [L265] COND FALSE !(\read(tmp)) [L268] tmp___0 = 1 [L270] retValue_acc = tmp___0 [L271] return (retValue_acc); [L165] RET, EXPR isHighWaterLevel() [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) [L169] CALL activatePump() [L188] pumpRunning = 1 [L169] RET activatePump() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR getWaterLevel() [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); [L909] RET, EXPR getWaterLevel() [L909] tmp = getWaterLevel() [L911] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L815] COND TRUE waterLevel > 0 [L816] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR getWaterLevel() [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); [L909] RET, EXPR getWaterLevel() [L909] tmp = getWaterLevel() [L911] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L815] COND TRUE waterLevel > 0 [L816] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR getWaterLevel() [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); [L909] RET, EXPR getWaterLevel() [L909] tmp = getWaterLevel() [L911] COND TRUE tmp == 0 [L913] CALL, EXPR isPumpRunning() [L212] int retValue_acc ; [L215] retValue_acc = pumpRunning [L216] return (retValue_acc); [L913] RET, EXPR isPumpRunning() [L913] tmp___0 = isPumpRunning() [L915] COND TRUE \read(tmp___0) [L917] CALL __automaton_fail() [L437] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 43.5s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 26.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1026 SDtfs, 2183 SDslu, 1050 SDs, 0 SdLazy, 4415 SolverSat, 1507 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 318 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 11.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=933occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 581 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 15.0s InterpolantComputationTime, 805 NumberOfCodeBlocks, 805 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 645 ConstructedInterpolants, 0 QuantifiedInterpolants, 195812 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 66/70 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...