/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_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 14:51:02,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:51:02,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:51:02,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:51:02,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:51:02,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:51:02,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:51:02,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:51:02,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:51:02,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:51:02,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:51:02,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:51:02,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:51:02,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:51:02,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:51:02,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:51:02,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:51:02,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:51:02,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:51:02,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:51:02,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:51:02,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:51:02,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:51:02,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:51:02,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:51:02,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:51:02,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:51:02,676 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:51:02,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:51:02,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:51:02,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:51:02,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:51:02,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:51:02,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:51:02,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:51:02,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:51:02,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:51:02,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:51:02,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:51:02,690 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:51:02,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:51:02,692 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 14:51:02,729 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:51:02,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:51:02,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:51:02,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:51:02,733 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:51:02,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:51:02,734 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:51:02,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:51:02,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:51:02,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:51:02,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:51:02,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:51:02,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:51:02,737 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:51:02,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:51:02,738 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:51:02,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:51:02,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:51:02,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:51:02,739 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:51:02,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:51:02,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:51:02,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:51:02,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:51:02,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:51:02,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:51:02,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:51:02,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:51:02,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:51:02,741 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 14:51:03,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:51:03,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:51:03,045 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:51:03,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:51:03,054 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:51:03,055 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2020-08-21 14:51:03,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2d3d2ac4/f1d0d835f5354f6bb137a806d62c2bda/FLAG2e60fe53b [2020-08-21 14:51:03,625 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:51:03,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2020-08-21 14:51:03,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2d3d2ac4/f1d0d835f5354f6bb137a806d62c2bda/FLAG2e60fe53b [2020-08-21 14:51:03,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2d3d2ac4/f1d0d835f5354f6bb137a806d62c2bda [2020-08-21 14:51:03,894 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:51:03,896 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:51:03,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:51:03,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:51:03,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:51:03,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:51:03" (1/1) ... [2020-08-21 14:51:03,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b1d0bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:51:03, skipping insertion in model container [2020-08-21 14:51:03,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:51:03" (1/1) ... [2020-08-21 14:51:03,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:51:03,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:51:04,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:51:04,395 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:51:04,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:51:04,514 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:51:04,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:51:04 WrapperNode [2020-08-21 14:51:04,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:51:04,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:51:04,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:51:04,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:51:04,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:51:04" (1/1) ... [2020-08-21 14:51:04,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:51:04" (1/1) ... [2020-08-21 14:51:04,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:51:04" (1/1) ... [2020-08-21 14:51:04,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:51:04" (1/1) ... [2020-08-21 14:51:04,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:51:04" (1/1) ... [2020-08-21 14:51:04,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:51:04" (1/1) ... [2020-08-21 14:51:04,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:51:04" (1/1) ... [2020-08-21 14:51:04,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:51:04,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:51:04,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:51:04,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:51:04,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:51:04" (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 14:51:04,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:51:04,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:51:04,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 14:51:04,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 14:51:04,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 14:51:04,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 14:51:04,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 14:51:04,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 14:51:04,718 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 14:51:04,718 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 14:51:04,719 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 14:51:04,720 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 14:51:04,720 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 14:51:04,720 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:51:04,720 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 14:51:04,721 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 14:51:04,721 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 14:51:04,721 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 14:51:04,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 14:51:04,722 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 14:51:04,722 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 14:51:04,722 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 14:51:04,723 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 14:51:04,723 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 14:51:04,724 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 14:51:04,725 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 14:51:04,725 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 14:51:04,725 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 14:51:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 14:51:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 14:51:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 14:51:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 14:51:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 14:51:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 14:51:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 14:51:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 14:51:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 14:51:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 14:51:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 14:51:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 14:51:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 14:51:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 14:51:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 14:51:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 14:51:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:51:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:51:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 14:51:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 14:51:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:51:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 14:51:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 14:51:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:51:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 14:51:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 14:51:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 14:51:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 14:51:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:51:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 14:51:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 14:51:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 14:51:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 14:51:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 14:51:04,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:51:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 14:51:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 14:51:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 14:51:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 14:51:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 14:51:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 14:51:04,734 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 14:51:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 14:51:04,735 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 14:51:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 14:51:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 14:51:04,736 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 14:51:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 14:51:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 14:51:04,737 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:51:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 14:51:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 14:51:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 14:51:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 14:51:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 14:51:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 14:51:04,738 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 14:51:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 14:51:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 14:51:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 14:51:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 14:51:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 14:51:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 14:51:04,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 14:51:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 14:51:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 14:51:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 14:51:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 14:51:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 14:51:04,740 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 14:51:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 14:51:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:51:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 14:51:04,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:51:05,947 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:51:05,948 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 14:51:05,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:51:05 BoogieIcfgContainer [2020-08-21 14:51:05,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:51:05,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:51:05,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:51:05,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:51:05,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:51:03" (1/3) ... [2020-08-21 14:51:05,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1c6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:51:05, skipping insertion in model container [2020-08-21 14:51:05,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:51:04" (2/3) ... [2020-08-21 14:51:05,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1c6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:51:05, skipping insertion in model container [2020-08-21 14:51:05,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:51:05" (3/3) ... [2020-08-21 14:51:05,962 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product55.cil.c [2020-08-21 14:51:05,973 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:51:05,981 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 14:51:05,995 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 14:51:06,019 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:51:06,019 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:51:06,019 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:51:06,019 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:51:06,020 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:51:06,020 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:51:06,020 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:51:06,020 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:51:06,043 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states. [2020-08-21 14:51:06,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 14:51:06,055 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:51:06,056 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 14:51:06,057 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:51:06,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:51:06,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1039510468, now seen corresponding path program 1 times [2020-08-21 14:51:06,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:51:06,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491733315] [2020-08-21 14:51:06,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:51:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:06,763 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:51:06,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:06,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:51:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:06,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:51:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:06,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:51:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:06,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:51:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:06,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:51:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:06,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:51:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:06,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:06,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 14:51:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:06,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 14:51:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:06,900 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 14:51:06,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491733315] [2020-08-21 14:51:06,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:51:06,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:51:06,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002010001] [2020-08-21 14:51:06,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:51:06,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:51:06,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:51:06,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:51:06,932 INFO L87 Difference]: Start difference. First operand 205 states. Second operand 4 states. [2020-08-21 14:51:08,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:51:08,168 INFO L93 Difference]: Finished difference Result 356 states and 457 transitions. [2020-08-21 14:51:08,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 14:51:08,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 14:51:08,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:51:08,185 INFO L225 Difference]: With dead ends: 356 [2020-08-21 14:51:08,185 INFO L226 Difference]: Without dead ends: 195 [2020-08-21 14:51:08,191 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 14:51:08,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-21 14:51:08,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 162. [2020-08-21 14:51:08,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-21 14:51:08,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 192 transitions. [2020-08-21 14:51:08,304 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 192 transitions. Word has length 59 [2020-08-21 14:51:08,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:51:08,304 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 192 transitions. [2020-08-21 14:51:08,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:51:08,305 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 192 transitions. [2020-08-21 14:51:08,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 14:51:08,309 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:51:08,310 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 14:51:08,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:51:08,310 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:51:08,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:51:08,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1700142027, now seen corresponding path program 1 times [2020-08-21 14:51:08,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:51:08,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878837253] [2020-08-21 14:51:08,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:51:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:08,675 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:51:08,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:08,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:51:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:08,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:51:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:08,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:51:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:08,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:51:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:08,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:51:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:08,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:51:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:08,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:08,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 14:51:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:08,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 14:51:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:08,759 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 14:51:08,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878837253] [2020-08-21 14:51:08,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:51:08,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 14:51:08,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445306527] [2020-08-21 14:51:08,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 14:51:08,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:51:08,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 14:51:08,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 14:51:08,764 INFO L87 Difference]: Start difference. First operand 162 states and 192 transitions. Second operand 5 states. [2020-08-21 14:51:09,256 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:51:10,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:51:10,384 INFO L93 Difference]: Finished difference Result 295 states and 361 transitions. [2020-08-21 14:51:10,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 14:51:10,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 14:51:10,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:51:10,389 INFO L225 Difference]: With dead ends: 295 [2020-08-21 14:51:10,390 INFO L226 Difference]: Without dead ends: 185 [2020-08-21 14:51:10,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 14:51:10,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-08-21 14:51:10,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-08-21 14:51:10,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-21 14:51:10,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2020-08-21 14:51:10,438 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 60 [2020-08-21 14:51:10,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:51:10,439 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2020-08-21 14:51:10,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 14:51:10,439 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2020-08-21 14:51:10,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 14:51:10,442 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:51:10,442 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] [2020-08-21 14:51:10,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:51:10,443 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:51:10,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:51:10,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1740397712, now seen corresponding path program 1 times [2020-08-21 14:51:10,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:51:10,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119371509] [2020-08-21 14:51:10,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:51:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:10,781 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:51:10,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:10,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:51:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:10,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:51:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:10,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:51:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:10,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:51:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:10,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:51:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:10,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:51:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:10,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:10,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 14:51:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:10,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 14:51:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:10,885 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 14:51:10,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119371509] [2020-08-21 14:51:10,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:51:10,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:51:10,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942731139] [2020-08-21 14:51:10,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:51:10,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:51:10,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:51:10,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:51:10,889 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand 9 states. [2020-08-21 14:51:11,256 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:51:11,562 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:51:11,815 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:51:12,038 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:51:12,904 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:51:14,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:51:14,884 INFO L93 Difference]: Finished difference Result 508 states and 630 transitions. [2020-08-21 14:51:14,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 14:51:14,884 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 14:51:14,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:51:14,890 INFO L225 Difference]: With dead ends: 508 [2020-08-21 14:51:14,890 INFO L226 Difference]: Without dead ends: 383 [2020-08-21 14:51:14,892 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 14:51:14,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-08-21 14:51:14,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 326. [2020-08-21 14:51:14,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-08-21 14:51:14,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 396 transitions. [2020-08-21 14:51:14,974 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 396 transitions. Word has length 64 [2020-08-21 14:51:14,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:51:14,975 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 396 transitions. [2020-08-21 14:51:14,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:51:14,975 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 396 transitions. [2020-08-21 14:51:14,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 14:51:14,978 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:51:14,978 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 14:51:14,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:51:14,979 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:51:14,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:51:14,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1889366184, now seen corresponding path program 1 times [2020-08-21 14:51:14,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:51:14,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132336895] [2020-08-21 14:51:14,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:51:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:15,346 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:51:15,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:15,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:51:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:15,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:51:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:15,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:51:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:15,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:51:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:15,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:51:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:15,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:51:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:15,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 14:51:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:15,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:15,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 14:51:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:15,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 14:51:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:15,441 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 14:51:15,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132336895] [2020-08-21 14:51:15,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:51:15,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:51:15,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348929663] [2020-08-21 14:51:15,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:51:15,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:51:15,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:51:15,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:51:15,444 INFO L87 Difference]: Start difference. First operand 326 states and 396 transitions. Second operand 9 states. [2020-08-21 14:51:15,811 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:51:16,413 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:51:17,331 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:51:17,661 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:51:17,981 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:51:18,296 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:51:19,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:51:19,235 INFO L93 Difference]: Finished difference Result 827 states and 1076 transitions. [2020-08-21 14:51:19,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 14:51:19,235 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 14:51:19,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:51:19,242 INFO L225 Difference]: With dead ends: 827 [2020-08-21 14:51:19,242 INFO L226 Difference]: Without dead ends: 529 [2020-08-21 14:51:19,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 14:51:19,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-21 14:51:19,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 465. [2020-08-21 14:51:19,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-08-21 14:51:19,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 561 transitions. [2020-08-21 14:51:19,334 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 561 transitions. Word has length 70 [2020-08-21 14:51:19,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:51:19,335 INFO L479 AbstractCegarLoop]: Abstraction has 465 states and 561 transitions. [2020-08-21 14:51:19,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:51:19,335 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 561 transitions. [2020-08-21 14:51:19,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 14:51:19,338 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:51:19,339 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 14:51:19,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:51:19,339 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:51:19,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:51:19,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1315837753, now seen corresponding path program 1 times [2020-08-21 14:51:19,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:51:19,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056768044] [2020-08-21 14:51:19,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:51:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:19,649 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:51:19,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:19,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:51:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:19,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:51:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:19,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:51:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:19,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:51:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:19,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:51:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:19,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:51:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:19,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:19,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:51:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:19,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:19,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:19,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:19,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:19,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:51:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:19,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 14:51:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:19,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:51:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:19,820 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 14:51:19,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056768044] [2020-08-21 14:51:19,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:51:19,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 14:51:19,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36363075] [2020-08-21 14:51:19,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 14:51:19,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:51:19,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 14:51:19,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 14:51:19,824 INFO L87 Difference]: Start difference. First operand 465 states and 561 transitions. Second operand 9 states. [2020-08-21 14:51:20,928 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:51:21,205 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 14:51:21,470 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:51:21,748 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:51:22,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:51:22,695 INFO L93 Difference]: Finished difference Result 988 states and 1255 transitions. [2020-08-21 14:51:22,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 14:51:22,699 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-08-21 14:51:22,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:51:22,703 INFO L225 Difference]: With dead ends: 988 [2020-08-21 14:51:22,703 INFO L226 Difference]: Without dead ends: 551 [2020-08-21 14:51:22,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 14:51:22,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-08-21 14:51:22,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 478. [2020-08-21 14:51:22,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-21 14:51:22,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 575 transitions. [2020-08-21 14:51:22,786 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 575 transitions. Word has length 97 [2020-08-21 14:51:22,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:51:22,786 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 575 transitions. [2020-08-21 14:51:22,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 14:51:22,787 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 575 transitions. [2020-08-21 14:51:22,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 14:51:22,789 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:51:22,789 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 14:51:22,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 14:51:22,789 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:51:22,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:51:22,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1243451195, now seen corresponding path program 1 times [2020-08-21 14:51:22,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:51:22,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438960149] [2020-08-21 14:51:22,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:51:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:23,058 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:51:23,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:23,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:51:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:23,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:51:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:23,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:51:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:23,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:51:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:23,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:51:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:23,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:51:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:23,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:23,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:51:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:23,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:23,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:23,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:23,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:23,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:51:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:23,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 14:51:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:23,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:51:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:23,246 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 14:51:23,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438960149] [2020-08-21 14:51:23,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:51:23,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 14:51:23,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731192268] [2020-08-21 14:51:23,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 14:51:23,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:51:23,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 14:51:23,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 14:51:23,249 INFO L87 Difference]: Start difference. First operand 478 states and 575 transitions. Second operand 11 states. [2020-08-21 14:51:23,797 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:51:24,045 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:51:24,282 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:51:25,100 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:51:25,412 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:51:25,665 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:51:26,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:51:26,664 INFO L93 Difference]: Finished difference Result 1015 states and 1308 transitions. [2020-08-21 14:51:26,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 14:51:26,665 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-08-21 14:51:26,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:51:26,670 INFO L225 Difference]: With dead ends: 1015 [2020-08-21 14:51:26,671 INFO L226 Difference]: Without dead ends: 565 [2020-08-21 14:51:26,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 14:51:26,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-08-21 14:51:26,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 486. [2020-08-21 14:51:26,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-08-21 14:51:26,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 583 transitions. [2020-08-21 14:51:26,778 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 583 transitions. Word has length 97 [2020-08-21 14:51:26,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:51:26,781 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 583 transitions. [2020-08-21 14:51:26,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 14:51:26,782 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 583 transitions. [2020-08-21 14:51:26,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 14:51:26,785 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:51:26,786 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 14:51:26,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 14:51:26,786 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:51:26,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:51:26,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1573216956, now seen corresponding path program 1 times [2020-08-21 14:51:26,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:51:26,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15323302] [2020-08-21 14:51:26,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:51:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:27,065 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:51:27,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:27,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:51:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:27,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:51:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:27,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:51:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:27,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:51:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:27,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:51:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:27,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 14:51:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:27,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:27,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 14:51:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:27,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:27,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:27,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:27,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:27,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:51:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:27,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 14:51:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:27,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 14:51:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:27,264 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 14:51:27,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15323302] [2020-08-21 14:51:27,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:51:27,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 14:51:27,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791478116] [2020-08-21 14:51:27,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 14:51:27,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:51:27,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 14:51:27,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 14:51:27,272 INFO L87 Difference]: Start difference. First operand 486 states and 583 transitions. Second operand 7 states. [2020-08-21 14:51:27,578 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:51:28,122 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:51:30,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:51:30,461 INFO L93 Difference]: Finished difference Result 1503 states and 1948 transitions. [2020-08-21 14:51:30,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 14:51:30,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-08-21 14:51:30,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:51:30,471 INFO L225 Difference]: With dead ends: 1503 [2020-08-21 14:51:30,472 INFO L226 Difference]: Without dead ends: 1045 [2020-08-21 14:51:30,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:51:30,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-08-21 14:51:30,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 971. [2020-08-21 14:51:30,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-08-21 14:51:30,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1183 transitions. [2020-08-21 14:51:30,658 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1183 transitions. Word has length 97 [2020-08-21 14:51:30,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:51:30,660 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1183 transitions. [2020-08-21 14:51:30,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 14:51:30,661 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1183 transitions. [2020-08-21 14:51:30,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-08-21 14:51:30,670 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:51:30,670 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, 1, 1, 1, 1] [2020-08-21 14:51:30,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 14:51:30,671 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:51:30,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:51:30,671 INFO L82 PathProgramCache]: Analyzing trace with hash 164101122, now seen corresponding path program 1 times [2020-08-21 14:51:30,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:51:30,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770945844] [2020-08-21 14:51:30,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:51:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:31,011 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:51:31,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:31,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:51:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:31,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:51:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:31,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:51:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:31,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:51:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:31,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:51:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:31,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:51:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:31,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 14:51:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:31,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:31,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 14:51:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:31,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:31,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:31,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:31,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:31,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:51:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:31,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 14:51:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:31,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 14:51:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:31,217 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 14:51:31,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770945844] [2020-08-21 14:51:31,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:51:31,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 14:51:31,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001218642] [2020-08-21 14:51:31,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 14:51:31,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:51:31,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 14:51:31,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 14:51:31,222 INFO L87 Difference]: Start difference. First operand 971 states and 1183 transitions. Second operand 12 states. [2020-08-21 14:51:31,697 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:51:32,308 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:51:33,000 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:51:33,333 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:51:33,591 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:51:33,883 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:51:34,147 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:51:36,149 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:51:36,473 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:51:37,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:51:37,151 INFO L93 Difference]: Finished difference Result 2749 states and 3568 transitions. [2020-08-21 14:51:37,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 14:51:37,152 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2020-08-21 14:51:37,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:51:37,166 INFO L225 Difference]: With dead ends: 2749 [2020-08-21 14:51:37,166 INFO L226 Difference]: Without dead ends: 2004 [2020-08-21 14:51:37,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 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 14:51:37,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2020-08-21 14:51:37,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1704. [2020-08-21 14:51:37,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1704 states. [2020-08-21 14:51:37,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2058 transitions. [2020-08-21 14:51:37,572 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2058 transitions. Word has length 101 [2020-08-21 14:51:37,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:51:37,575 INFO L479 AbstractCegarLoop]: Abstraction has 1704 states and 2058 transitions. [2020-08-21 14:51:37,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 14:51:37,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2058 transitions. [2020-08-21 14:51:37,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-21 14:51:37,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:51:37,584 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 14:51:37,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 14:51:37,585 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:51:37,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:51:37,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1947078735, now seen corresponding path program 1 times [2020-08-21 14:51:37,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:51:37,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395264667] [2020-08-21 14:51:37,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:51:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,008 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:51:38,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:51:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:51:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:51:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:51:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:51:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:51:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:51:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 14:51:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:51:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 14:51:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 14:51:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 14:51:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 14:51:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:51:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 14:51:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-21 14:51:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-21 14:51:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 14:51:38,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395264667] [2020-08-21 14:51:38,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:51:38,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 14:51:38,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037298660] [2020-08-21 14:51:38,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 14:51:38,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:51:38,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 14:51:38,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 14:51:38,319 INFO L87 Difference]: Start difference. First operand 1704 states and 2058 transitions. Second operand 16 states. [2020-08-21 14:51:38,957 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 14:51:39,454 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 14:51:39,858 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 14:51:40,108 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 14:51:40,731 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 14:51:40,981 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:51:41,312 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 14:51:41,752 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 14:51:42,880 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:51:43,478 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:51:44,012 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-21 14:51:44,382 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:51:44,919 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:51:45,318 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:51:45,879 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 14:51:46,307 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 14:51:47,037 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-21 14:51:47,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:51:47,683 INFO L93 Difference]: Finished difference Result 3639 states and 4528 transitions. [2020-08-21 14:51:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-08-21 14:51:47,684 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2020-08-21 14:51:47,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:51:47,697 INFO L225 Difference]: With dead ends: 3639 [2020-08-21 14:51:47,697 INFO L226 Difference]: Without dead ends: 2149 [2020-08-21 14:51:47,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=682, Invalid=2740, Unknown=0, NotChecked=0, Total=3422 [2020-08-21 14:51:47,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2020-08-21 14:51:48,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 1971. [2020-08-21 14:51:48,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1971 states. [2020-08-21 14:51:48,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2328 transitions. [2020-08-21 14:51:48,091 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2328 transitions. Word has length 178 [2020-08-21 14:51:48,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:51:48,092 INFO L479 AbstractCegarLoop]: Abstraction has 1971 states and 2328 transitions. [2020-08-21 14:51:48,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 14:51:48,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2328 transitions. [2020-08-21 14:51:48,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-08-21 14:51:48,102 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:51:48,103 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, 3, 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, 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] [2020-08-21 14:51:48,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 14:51:48,104 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:51:48,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:51:48,104 INFO L82 PathProgramCache]: Analyzing trace with hash 477472839, now seen corresponding path program 1 times [2020-08-21 14:51:48,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:51:48,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534990699] [2020-08-21 14:51:48,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:51:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,463 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:51:48,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:51:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:51:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:51:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:51:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:51:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:51:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:51:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 14:51:48,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:51:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 14:51:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 14:51:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:51:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:51:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:51:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 14:51:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 14:51:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-21 14:51:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:51:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:51:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:51:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 14:51:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-21 14:51:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-21 14:51:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-21 14:51:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:51:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-21 14:51:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:48,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-21 14:51:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 77 proven. 31 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-08-21 14:51:49,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534990699] [2020-08-21 14:51:49,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:51:49,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 14:51:49,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873121439] [2020-08-21 14:51:49,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 14:51:49,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:51:49,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 14:51:49,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:51:49,011 INFO L87 Difference]: Start difference. First operand 1971 states and 2328 transitions. Second operand 15 states. [2020-08-21 14:51:50,246 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:51:50,511 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:51:50,790 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:51:51,019 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 14:51:51,255 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:51:52,368 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:51:52,884 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 14:51:53,337 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 14:51:53,666 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 14:51:56,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:51:56,901 INFO L93 Difference]: Finished difference Result 5414 states and 6621 transitions. [2020-08-21 14:51:56,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 14:51:56,901 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 301 [2020-08-21 14:51:56,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:51:56,920 INFO L225 Difference]: With dead ends: 5414 [2020-08-21 14:51:56,920 INFO L226 Difference]: Without dead ends: 3267 [2020-08-21 14:51:56,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 14:51:56,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2020-08-21 14:51:57,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 2803. [2020-08-21 14:51:57,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2803 states. [2020-08-21 14:51:57,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 3345 transitions. [2020-08-21 14:51:57,546 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 3345 transitions. Word has length 301 [2020-08-21 14:51:57,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:51:57,546 INFO L479 AbstractCegarLoop]: Abstraction has 2803 states and 3345 transitions. [2020-08-21 14:51:57,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 14:51:57,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 3345 transitions. [2020-08-21 14:51:57,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-08-21 14:51:57,559 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:51:57,559 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, 3, 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, 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] [2020-08-21 14:51:57,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 14:51:57,560 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:51:57,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:51:57,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1744919842, now seen corresponding path program 1 times [2020-08-21 14:51:57,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:51:57,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130871876] [2020-08-21 14:51:57,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:51:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:57,925 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 14:51:57,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:57,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:51:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:57,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:51:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:57,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 14:51:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:57,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 14:51:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:57,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 14:51:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:57,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 14:51:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 14:51:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 14:51:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:51:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 14:51:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:58,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 14:51:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:51:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:51:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:51:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 14:51:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 14:51:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 14:51:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-21 14:51:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:51:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 14:51:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 14:51:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 14:51:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-21 14:51:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:51:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 14:51:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 14:51:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:51:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 14:51:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-21 14:51:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-21 14:51:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:51:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 85 proven. 42 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-08-21 14:51:58,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130871876] [2020-08-21 14:51:58,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:51:58,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 14:51:58,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241218959] [2020-08-21 14:51:58,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 14:51:58,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:51:58,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 14:51:58,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 14:51:58,436 INFO L87 Difference]: Start difference. First operand 2803 states and 3345 transitions. Second operand 16 states. [2020-08-21 14:51:58,883 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 14:51:59,198 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:51:59,459 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:51:59,695 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 14:52:00,305 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191