/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:50:03,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:50:03,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:50:03,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:50:03,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:50:03,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:50:03,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:50:03,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:50:03,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:50:03,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:50:03,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:50:03,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:50:03,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:50:03,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:50:03,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:50:03,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:50:03,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:50:03,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:50:03,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:50:03,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:50:03,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:50:03,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:50:03,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:50:03,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:50:03,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:50:03,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:50:03,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:50:03,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:50:03,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:50:03,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:50:03,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:50:03,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:50:03,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:50:03,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:50:03,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:50:03,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:50:03,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:50:03,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:50:03,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:50:03,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:50:03,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:50:03,645 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 [2020-08-21 14:50:03,686 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:50:03,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:50:03,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:50:03,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:50:03,689 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:50:03,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:50:03,689 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:50:03,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:50:03,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:50:03,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:50:03,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:50:03,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:50:03,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:50:03,692 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:50:03,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:50:03,692 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:50:03,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:50:03,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:50:03,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:50:03,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:50:03,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:50:03,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:50:03,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:50:03,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:50:03,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:50:03,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:50:03,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:50:03,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:50:03,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:50:03,695 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 -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 14:50:03,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:50:04,009 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:50:04,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:50:04,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:50:04,015 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:50:04,015 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-21 14:50:04,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94912c357/71ff19d699a9420d8f6586284102b8d9/FLAG20775ea9f [2020-08-21 14:50:04,540 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:50:04,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-21 14:50:04,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94912c357/71ff19d699a9420d8f6586284102b8d9/FLAG20775ea9f [2020-08-21 14:50:04,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94912c357/71ff19d699a9420d8f6586284102b8d9 [2020-08-21 14:50:04,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:50:04,915 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:50:04,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:50:04,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:50:04,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:50:04,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:50:04" (1/1) ... [2020-08-21 14:50:04,924 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afe831a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:50:04, skipping insertion in model container [2020-08-21 14:50:04,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:50:04" (1/1) ... [2020-08-21 14:50:04,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:50:04,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:50:05,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:50:05,552 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:50:05,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:50:05,700 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:50:05,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:50:05 WrapperNode [2020-08-21 14:50:05,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:50:05,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:50:05,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:50:05,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:50:05,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:50:05" (1/1) ... [2020-08-21 14:50:05,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:50:05" (1/1) ... [2020-08-21 14:50:05,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:50:05" (1/1) ... [2020-08-21 14:50:05,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:50:05" (1/1) ... [2020-08-21 14:50:05,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:50:05" (1/1) ... [2020-08-21 14:50:05,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:50:05" (1/1) ... [2020-08-21 14:50:05,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:50:05" (1/1) ... [2020-08-21 14:50:05,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:50:05,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:50:05,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:50:05,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:50:05,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:50:05" (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 [2020-08-21 14:50:05,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:50:05,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:50:05,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 14:50:05,885 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 14:50:05,885 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 14:50:05,886 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 14:50:05,886 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 14:50:05,886 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 14:50:05,886 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 14:50:05,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 14:50:05,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 14:50:05,887 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 14:50:05,887 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 14:50:05,887 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 14:50:05,887 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 14:50:05,888 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 14:50:05,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 14:50:05,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 14:50:05,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 14:50:05,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 14:50:05,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 14:50:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 14:50:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 14:50:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 14:50:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 14:50:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 14:50:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 14:50:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 14:50:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 14:50:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:50:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 14:50:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 14:50:05,891 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 14:50:05,891 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 14:50:05,891 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 14:50:05,891 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 14:50:05,891 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 14:50:05,891 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 14:50:05,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 14:50:05,892 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 14:50:05,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 14:50:05,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 14:50:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:50:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:50:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 14:50:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 14:50:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 14:50:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 14:50:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 14:50:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 14:50:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 14:50:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 14:50:05,894 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 14:50:05,894 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 14:50:05,894 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 14:50:05,894 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 14:50:05,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 14:50:05,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 14:50:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 14:50:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 14:50:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 14:50:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 14:50:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 14:50:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:50:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 14:50:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 14:50:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 14:50:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 14:50:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 14:50:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:50:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 14:50:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 14:50:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:50:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 14:50:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:50:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 14:50:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 14:50:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:50:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 14:50:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 14:50:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:50:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 14:50:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 14:50:05,898 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 14:50:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 14:50:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 14:50:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 14:50:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 14:50:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 14:50:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 14:50:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 14:50:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 14:50:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 14:50:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:50:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 14:50:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:50:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 14:50:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:50:07,025 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:50:07,026 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 14:50:07,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:50:07 BoogieIcfgContainer [2020-08-21 14:50:07,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:50:07,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:50:07,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:50:07,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:50:07,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:50:04" (1/3) ... [2020-08-21 14:50:07,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5731ac0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:50:07, skipping insertion in model container [2020-08-21 14:50:07,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:50:05" (2/3) ... [2020-08-21 14:50:07,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5731ac0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:50:07, skipping insertion in model container [2020-08-21 14:50:07,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:50:07" (3/3) ... [2020-08-21 14:50:07,045 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product40.cil.c [2020-08-21 14:50:07,055 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:50:07,064 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:50:07,078 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:50:07,104 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:50:07,104 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:50:07,104 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:50:07,104 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:50:07,104 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:50:07,104 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:50:07,105 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:50:07,105 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:50:07,125 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-08-21 14:50:07,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 14:50:07,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:50:07,137 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:50:07,137 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:50:07,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:50:07,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1231866733, now seen corresponding path program 1 times [2020-08-21 14:50:07,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:50:07,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144117637] [2020-08-21 14:50:07,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:50:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:07,833 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:50:07,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:07,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:50:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:07,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:50:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:07,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:50:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:07,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:50:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:07,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:50:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:07,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:50:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:07,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:07,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:50:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:07,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 14:50:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:50:07,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144117637] [2020-08-21 14:50:07,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:50:07,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:50:07,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415328210] [2020-08-21 14:50:07,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:50:07,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:50:07,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:50:07,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:50:07,995 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 4 states. [2020-08-21 14:50:09,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:50:09,099 INFO L93 Difference]: Finished difference Result 324 states and 416 transitions. [2020-08-21 14:50:09,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 14:50:09,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 14:50:09,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:50:09,116 INFO L225 Difference]: With dead ends: 324 [2020-08-21 14:50:09,116 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 14:50:09,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:50:09,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 14:50:09,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 146. [2020-08-21 14:50:09,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-21 14:50:09,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2020-08-21 14:50:09,213 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 59 [2020-08-21 14:50:09,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:50:09,214 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2020-08-21 14:50:09,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:50:09,214 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2020-08-21 14:50:09,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 14:50:09,218 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:50:09,218 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:50:09,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:50:09,219 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:50:09,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:50:09,219 INFO L82 PathProgramCache]: Analyzing trace with hash 735941424, now seen corresponding path program 1 times [2020-08-21 14:50:09,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:50:09,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634039610] [2020-08-21 14:50:09,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:50:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:09,535 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:50:09,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:09,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:50:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:09,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:50:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:09,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:50:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:09,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:50:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:09,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:50:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:09,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:50:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:09,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:09,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 14:50:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:09,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 14:50:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:50:09,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634039610] [2020-08-21 14:50:09,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:50:09,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 14:50:09,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159952166] [2020-08-21 14:50:09,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 14:50:09,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:50:09,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 14:50:09,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:50:09,597 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 5 states. [2020-08-21 14:50:10,098 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:50:11,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:50:11,001 INFO L93 Difference]: Finished difference Result 259 states and 316 transitions. [2020-08-21 14:50:11,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 14:50:11,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 14:50:11,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:50:11,006 INFO L225 Difference]: With dead ends: 259 [2020-08-21 14:50:11,006 INFO L226 Difference]: Without dead ends: 169 [2020-08-21 14:50:11,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 14:50:11,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-21 14:50:11,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 137. [2020-08-21 14:50:11,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-21 14:50:11,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2020-08-21 14:50:11,049 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 60 [2020-08-21 14:50:11,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:50:11,049 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2020-08-21 14:50:11,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 14:50:11,049 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2020-08-21 14:50:11,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 14:50:11,051 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:50:11,052 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:50:11,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:50:11,052 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:50:11,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:50:11,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1019781836, now seen corresponding path program 1 times [2020-08-21 14:50:11,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:50:11,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812853933] [2020-08-21 14:50:11,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:50:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:11,393 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:50:11,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:11,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:50:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:11,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:50:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:11,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:50:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:11,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:50:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:11,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:50:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:11,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:50:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:11,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:11,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 14:50:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:11,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 14:50:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:50:11,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812853933] [2020-08-21 14:50:11,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:50:11,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:50:11,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487096174] [2020-08-21 14:50:11,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:50:11,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:50:11,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:50:11,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:50:11,509 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 9 states. [2020-08-21 14:50:11,881 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:50:12,179 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:50:12,411 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:50:12,649 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:50:13,499 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:50:15,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:50:15,134 INFO L93 Difference]: Finished difference Result 460 states and 568 transitions. [2020-08-21 14:50:15,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 14:50:15,137 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 14:50:15,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:50:15,148 INFO L225 Difference]: With dead ends: 460 [2020-08-21 14:50:15,148 INFO L226 Difference]: Without dead ends: 351 [2020-08-21 14:50:15,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 14:50:15,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-08-21 14:50:15,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 290. [2020-08-21 14:50:15,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-08-21 14:50:15,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 350 transitions. [2020-08-21 14:50:15,237 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 350 transitions. Word has length 65 [2020-08-21 14:50:15,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:50:15,237 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 350 transitions. [2020-08-21 14:50:15,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:50:15,238 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 350 transitions. [2020-08-21 14:50:15,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 14:50:15,240 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:50:15,240 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:50:15,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:50:15,241 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:50:15,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:50:15,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1071873071, now seen corresponding path program 1 times [2020-08-21 14:50:15,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:50:15,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588965924] [2020-08-21 14:50:15,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:50:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:15,543 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:50:15,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:15,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:50:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:15,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:50:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:15,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:50:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:15,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:50:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:15,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:50:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:15,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:50:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:15,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 14:50:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:15,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:15,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 14:50:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:15,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:50:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:15,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 14:50:15,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588965924] [2020-08-21 14:50:15,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:50:15,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:50:15,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487928663] [2020-08-21 14:50:15,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:50:15,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:50:15,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:50:15,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:50:15,681 INFO L87 Difference]: Start difference. First operand 290 states and 350 transitions. Second operand 9 states. [2020-08-21 14:50:16,042 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:50:16,725 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:50:17,481 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:50:17,770 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:50:18,018 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:50:18,273 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:50:19,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:50:19,046 INFO L93 Difference]: Finished difference Result 747 states and 974 transitions. [2020-08-21 14:50:19,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 14:50:19,046 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 14:50:19,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:50:19,052 INFO L225 Difference]: With dead ends: 747 [2020-08-21 14:50:19,052 INFO L226 Difference]: Without dead ends: 485 [2020-08-21 14:50:19,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 14:50:19,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-21 14:50:19,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 417. [2020-08-21 14:50:19,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-08-21 14:50:19,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 501 transitions. [2020-08-21 14:50:19,135 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 501 transitions. Word has length 70 [2020-08-21 14:50:19,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:50:19,135 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 501 transitions. [2020-08-21 14:50:19,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:50:19,136 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 501 transitions. [2020-08-21 14:50:19,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 14:50:19,138 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:50:19,138 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:50:19,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:50:19,139 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:50:19,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:50:19,139 INFO L82 PathProgramCache]: Analyzing trace with hash -573764694, now seen corresponding path program 1 times [2020-08-21 14:50:19,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:50:19,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769069087] [2020-08-21 14:50:19,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:50:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:19,387 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:50:19,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:19,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:50:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:19,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:50:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:19,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:50:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:19,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:50:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:19,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:50:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:19,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:50:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:19,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:19,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 14:50:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:19,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:19,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:19,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:19,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:50:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:19,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 14:50:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:19,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 14:50:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:50:19,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769069087] [2020-08-21 14:50:19,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:50:19,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:50:19,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717681282] [2020-08-21 14:50:19,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:50:19,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:50:19,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:50:19,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:50:19,553 INFO L87 Difference]: Start difference. First operand 417 states and 501 transitions. Second operand 9 states. [2020-08-21 14:50:19,877 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:50:20,916 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:50:21,156 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:50:21,408 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:50:21,668 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:50:22,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:50:22,865 INFO L93 Difference]: Finished difference Result 1260 states and 1685 transitions. [2020-08-21 14:50:22,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 14:50:22,866 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-21 14:50:22,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:50:22,873 INFO L225 Difference]: With dead ends: 1260 [2020-08-21 14:50:22,873 INFO L226 Difference]: Without dead ends: 871 [2020-08-21 14:50:22,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 14:50:22,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-08-21 14:50:23,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 743. [2020-08-21 14:50:23,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-21 14:50:23,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 897 transitions. [2020-08-21 14:50:23,019 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 897 transitions. Word has length 93 [2020-08-21 14:50:23,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:50:23,020 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 897 transitions. [2020-08-21 14:50:23,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:50:23,020 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 897 transitions. [2020-08-21 14:50:23,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 14:50:23,022 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:50:23,023 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:50:23,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 14:50:23,023 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:50:23,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:50:23,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1995721705, now seen corresponding path program 1 times [2020-08-21 14:50:23,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:50:23,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683912662] [2020-08-21 14:50:23,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:50:23,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:23,317 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:50:23,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:23,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:50:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:23,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:50:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:23,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:50:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:23,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:50:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:23,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:50:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:23,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:50:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:23,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:23,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 14:50:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:23,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:23,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:23,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:23,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:50:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:23,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 14:50:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:23,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 14:50:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:50:23,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683912662] [2020-08-21 14:50:23,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:50:23,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:50:23,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875695632] [2020-08-21 14:50:23,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:50:23,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:50:23,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:50:23,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:50:23,444 INFO L87 Difference]: Start difference. First operand 743 states and 897 transitions. Second operand 9 states. [2020-08-21 14:50:24,458 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:50:24,698 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 14:50:24,955 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:50:25,202 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:50:26,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:50:26,005 INFO L93 Difference]: Finished difference Result 1585 states and 2019 transitions. [2020-08-21 14:50:26,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 14:50:26,006 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-21 14:50:26,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:50:26,015 INFO L225 Difference]: With dead ends: 1585 [2020-08-21 14:50:26,015 INFO L226 Difference]: Without dead ends: 870 [2020-08-21 14:50:26,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 14:50:26,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-08-21 14:50:26,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 763. [2020-08-21 14:50:26,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-08-21 14:50:26,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 917 transitions. [2020-08-21 14:50:26,187 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 917 transitions. Word has length 93 [2020-08-21 14:50:26,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:50:26,189 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 917 transitions. [2020-08-21 14:50:26,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:50:26,189 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 917 transitions. [2020-08-21 14:50:26,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 14:50:26,191 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:50:26,192 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:50:26,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 14:50:26,192 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:50:26,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:50:26,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1597645717, now seen corresponding path program 1 times [2020-08-21 14:50:26,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:50:26,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143398031] [2020-08-21 14:50:26,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:50:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:26,455 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:50:26,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:26,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:50:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:26,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:50:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:26,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:50:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:26,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:50:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:26,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:50:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:26,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:50:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:26,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:26,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 14:50:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:26,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:26,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:26,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:26,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:50:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:26,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 14:50:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:26,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 14:50:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:26,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:50:26,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143398031] [2020-08-21 14:50:26,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:50:26,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 14:50:26,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000113696] [2020-08-21 14:50:26,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 14:50:26,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:50:26,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 14:50:26,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:50:26,603 INFO L87 Difference]: Start difference. First operand 763 states and 917 transitions. Second operand 11 states. [2020-08-21 14:50:27,032 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:50:27,260 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:50:27,485 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:50:28,280 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:50:28,539 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:50:28,785 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:50:29,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:50:29,708 INFO L93 Difference]: Finished difference Result 1442 states and 1826 transitions. [2020-08-21 14:50:29,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 14:50:29,711 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-21 14:50:29,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:50:29,720 INFO L225 Difference]: With dead ends: 1442 [2020-08-21 14:50:29,720 INFO L226 Difference]: Without dead ends: 707 [2020-08-21 14:50:29,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 14:50:29,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-21 14:50:29,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 630. [2020-08-21 14:50:29,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-08-21 14:50:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 739 transitions. [2020-08-21 14:50:29,836 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 739 transitions. Word has length 93 [2020-08-21 14:50:29,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:50:29,837 INFO L479 AbstractCegarLoop]: Abstraction has 630 states and 739 transitions. [2020-08-21 14:50:29,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 14:50:29,837 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 739 transitions. [2020-08-21 14:50:29,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 14:50:29,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:50:29,840 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:50:29,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 14:50:29,841 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:50:29,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:50:29,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1394866514, now seen corresponding path program 1 times [2020-08-21 14:50:29,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:50:29,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1397967823] [2020-08-21 14:50:29,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:50:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:30,181 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:50:30,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:30,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:50:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:30,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:50:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:30,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:50:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:30,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:50:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:30,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:50:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:30,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:50:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:30,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 14:50:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:30,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:30,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 14:50:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:30,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:30,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:30,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:30,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:50:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:30,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 14:50:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:30,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:50:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:30,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 14:50:30,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1397967823] [2020-08-21 14:50:30,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:50:30,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 14:50:30,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299972073] [2020-08-21 14:50:30,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:50:30,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:50:30,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:50:30,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:50:30,328 INFO L87 Difference]: Start difference. First operand 630 states and 739 transitions. Second operand 12 states. [2020-08-21 14:50:30,849 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:50:31,536 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:50:32,214 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:50:32,525 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:50:32,769 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:50:33,075 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:50:33,385 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:50:35,114 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:50:35,399 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:50:35,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:50:35,821 INFO L93 Difference]: Finished difference Result 1853 states and 2361 transitions. [2020-08-21 14:50:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 14:50:35,822 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-21 14:50:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:50:35,832 INFO L225 Difference]: With dead ends: 1853 [2020-08-21 14:50:35,832 INFO L226 Difference]: Without dead ends: 1437 [2020-08-21 14:50:35,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 14:50:35,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2020-08-21 14:50:36,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1299. [2020-08-21 14:50:36,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-08-21 14:50:36,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1525 transitions. [2020-08-21 14:50:36,070 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1525 transitions. Word has length 97 [2020-08-21 14:50:36,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:50:36,071 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1525 transitions. [2020-08-21 14:50:36,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:50:36,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1525 transitions. [2020-08-21 14:50:36,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 14:50:36,076 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:50:36,076 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:50:36,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 14:50:36,077 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:50:36,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:50:36,077 INFO L82 PathProgramCache]: Analyzing trace with hash 773750625, now seen corresponding path program 1 times [2020-08-21 14:50:36,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:50:36,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060153747] [2020-08-21 14:50:36,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:50:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,383 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:50:36,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:50:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:50:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:50:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:50:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:50:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:50:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 14:50:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 14:50:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:50:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:50:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 14:50:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 14:50:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-21 14:50:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:50:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-21 14:50:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-21 14:50:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 14:50:36,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060153747] [2020-08-21 14:50:36,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:50:36,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 14:50:36,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840981386] [2020-08-21 14:50:36,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 14:50:36,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:50:36,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 14:50:36,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 14:50:36,728 INFO L87 Difference]: Start difference. First operand 1299 states and 1525 transitions. Second operand 16 states. [2020-08-21 14:50:37,431 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 14:50:37,930 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 14:50:38,325 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 14:50:38,619 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 14:50:39,270 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-21 14:50:39,625 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 14:50:39,952 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 14:50:40,320 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 14:50:40,655 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 14:50:41,757 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:50:42,692 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-21 14:50:43,213 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-21 14:50:43,534 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:50:44,087 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:50:44,494 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 14:50:45,102 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-21 14:50:45,650 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-08-21 14:50:46,140 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 14:50:46,654 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-21 14:50:47,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:50:47,446 INFO L93 Difference]: Finished difference Result 2875 states and 3500 transitions. [2020-08-21 14:50:47,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-08-21 14:50:47,447 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-21 14:50:47,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:50:47,457 INFO L225 Difference]: With dead ends: 2875 [2020-08-21 14:50:47,457 INFO L226 Difference]: Without dead ends: 1784 [2020-08-21 14:50:47,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=751, Invalid=3031, Unknown=0, NotChecked=0, Total=3782 [2020-08-21 14:50:47,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2020-08-21 14:50:47,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1573. [2020-08-21 14:50:47,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-08-21 14:50:47,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 1829 transitions. [2020-08-21 14:50:47,782 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 1829 transitions. Word has length 157 [2020-08-21 14:50:47,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:50:47,782 INFO L479 AbstractCegarLoop]: Abstraction has 1573 states and 1829 transitions. [2020-08-21 14:50:47,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 14:50:47,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 1829 transitions. [2020-08-21 14:50:47,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-21 14:50:47,790 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:50:47,791 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 14:50:47,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 14:50:47,792 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:50:47,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:50:47,792 INFO L82 PathProgramCache]: Analyzing trace with hash -2117575381, now seen corresponding path program 1 times [2020-08-21 14:50:47,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:50:47,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941664385] [2020-08-21 14:50:47,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:50:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,090 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:50:48,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:50:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:50:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:50:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:50:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:50:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:50:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 14:50:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 14:50:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:50:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:50:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 14:50:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:50:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:50:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:50:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:50:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-21 14:50:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:50:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:50:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:50:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 14:50:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-21 14:50:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-21 14:50:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:50:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-21 14:50:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-21 14:50:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:48,524 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 81 proven. 31 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-21 14:50:48,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941664385] [2020-08-21 14:50:48,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:50:48,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 14:50:48,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698874299] [2020-08-21 14:50:48,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 14:50:48,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:50:48,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 14:50:48,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:50:48,528 INFO L87 Difference]: Start difference. First operand 1573 states and 1829 transitions. Second operand 15 states. [2020-08-21 14:50:49,830 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:50:50,090 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:50:50,321 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:50:50,557 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:50:50,791 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:50:51,762 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:50:52,251 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 14:50:52,692 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 14:50:53,049 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:50:55,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:50:55,446 INFO L93 Difference]: Finished difference Result 4467 states and 5409 transitions. [2020-08-21 14:50:55,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 14:50:55,447 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-21 14:50:55,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:50:55,462 INFO L225 Difference]: With dead ends: 4467 [2020-08-21 14:50:55,462 INFO L226 Difference]: Without dead ends: 2691 [2020-08-21 14:50:55,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 14:50:55,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2020-08-21 14:50:55,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2317. [2020-08-21 14:50:55,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2317 states. [2020-08-21 14:50:55,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2705 transitions. [2020-08-21 14:50:55,886 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2705 transitions. Word has length 273 [2020-08-21 14:50:55,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:50:55,886 INFO L479 AbstractCegarLoop]: Abstraction has 2317 states and 2705 transitions. [2020-08-21 14:50:55,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 14:50:55,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2705 transitions. [2020-08-21 14:50:55,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-08-21 14:50:55,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:50:55,896 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 14:50:55,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 14:50:55,897 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:50:55,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:50:55,897 INFO L82 PathProgramCache]: Analyzing trace with hash 856417488, now seen corresponding path program 1 times [2020-08-21 14:50:55,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:50:55,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705562511] [2020-08-21 14:50:55,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:50:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,268 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:50:56,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:50:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:50:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:50:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:50:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:50:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:50:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 14:50:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 14:50:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:50:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:50:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 14:50:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:50:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:50:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:50:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 14:50:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:50:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-21 14:50:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:50:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:50:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:50:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 14:50:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-21 14:50:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:50:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-21 14:50:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:50:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:50:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:50:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-21 14:50:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-08-21 14:50:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:50:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-08-21 14:50:56,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705562511] [2020-08-21 14:50:56,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:50:56,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 14:50:56,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359991444] [2020-08-21 14:50:56,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 14:50:56,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:50:56,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 14:50:56,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 14:50:56,654 INFO L87 Difference]: Start difference. First operand 2317 states and 2705 transitions. Second operand 16 states. [2020-08-21 14:50:57,205 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:50:57,514 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 14:50:57,765 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:50:57,996 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:50:58,683 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:50:59,589 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:50:59,892 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:51:00,130 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:51:00,689 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:51:01,505 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:51:01,746 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:51:02,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:51:02,304 INFO L93 Difference]: Finished difference Result 4381 states and 5179 transitions. [2020-08-21 14:51:02,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 14:51:02,305 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 279 [2020-08-21 14:51:02,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:51:02,317 INFO L225 Difference]: With dead ends: 4381 [2020-08-21 14:51:02,317 INFO L226 Difference]: Without dead ends: 2342 [2020-08-21 14:51:02,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-21 14:51:02,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2020-08-21 14:51:02,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2266. [2020-08-21 14:51:02,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2266 states. [2020-08-21 14:51:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2266 states to 2266 states and 2610 transitions. [2020-08-21 14:51:02,746 INFO L78 Accepts]: Start accepts. Automaton has 2266 states and 2610 transitions. Word has length 279 [2020-08-21 14:51:02,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:51:02,747 INFO L479 AbstractCegarLoop]: Abstraction has 2266 states and 2610 transitions. [2020-08-21 14:51:02,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 14:51:02,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2266 states and 2610 transitions. [2020-08-21 14:51:02,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-08-21 14:51:02,757 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:51:02,757 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 14:51:02,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 14:51:02,758 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:51:02,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:51:02,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1108213713, now seen corresponding path program 1 times [2020-08-21 14:51:02,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:51:02,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763700748] [2020-08-21 14:51:02,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:51:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:03,040 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:51:03,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:03,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:51:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:03,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:51:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:03,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:51:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:03,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:51:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:03,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:51:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat