/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:42:10,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:42:10,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:42:10,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:42:10,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:42:10,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:42:10,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:42:10,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:42:10,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:42:10,659 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:42:10,660 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:42:10,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:42:10,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:42:10,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:42:10,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:42:10,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:42:10,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:42:10,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:42:10,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:42:10,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:42:10,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:42:10,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:42:10,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:42:10,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:42:10,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:42:10,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:42:10,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:42:10,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:42:10,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:42:10,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:42:10,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:42:10,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:42:10,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:42:10,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:42:10,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:42:10,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:42:10,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:42:10,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:42:10,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:42:10,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:42:10,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:42:10,699 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 23:42:10,738 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:42:10,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:42:10,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:42:10,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:42:10,741 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:42:10,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:42:10,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:42:10,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:42:10,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:42:10,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:42:10,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:42:10,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:42:10,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:42:10,744 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:42:10,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:42:10,744 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:42:10,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:42:10,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:42:10,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:42:10,745 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:42:10,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:42:10,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:42:10,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:42:10,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:42:10,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:42:10,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:42:10,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:42:10,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:42:10,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:42:10,747 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 -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:42:11,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:42:11,052 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:42:11,057 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:42:11,059 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:42:11,060 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:42:11,060 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-08-21 23:42:11,131 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/455be8e43/5ec8586d5a53417295849a399cc68933/FLAGecdcd5f43 [2020-08-21 23:42:11,607 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:42:11,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product43.cil.c [2020-08-21 23:42:11,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/455be8e43/5ec8586d5a53417295849a399cc68933/FLAGecdcd5f43 [2020-08-21 23:42:11,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/455be8e43/5ec8586d5a53417295849a399cc68933 [2020-08-21 23:42:11,939 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:42:11,941 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:42:11,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:42:11,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:42:11,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:42:11,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:42:11" (1/1) ... [2020-08-21 23:42:11,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11967da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:11, skipping insertion in model container [2020-08-21 23:42:11,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:42:11" (1/1) ... [2020-08-21 23:42:11,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:42:12,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:42:12,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:42:12,450 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:42:12,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:42:12,614 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:42:12,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:12 WrapperNode [2020-08-21 23:42:12,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:42:12,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:42:12,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:42:12,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:42:12,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:12" (1/1) ... [2020-08-21 23:42:12,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:12" (1/1) ... [2020-08-21 23:42:12,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:12" (1/1) ... [2020-08-21 23:42:12,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:12" (1/1) ... [2020-08-21 23:42:12,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:12" (1/1) ... [2020-08-21 23:42:12,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:12" (1/1) ... [2020-08-21 23:42:12,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:12" (1/1) ... [2020-08-21 23:42:12,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:42:12,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:42:12,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:42:12,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:42:12,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:12" (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 23:42:12,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:42:12,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:42:12,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 23:42:12,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 23:42:12,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 23:42:12,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 23:42:12,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 23:42:12,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 23:42:12,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 23:42:12,781 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 23:42:12,781 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 23:42:12,781 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 23:42:12,781 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 23:42:12,782 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:42:12,782 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 23:42:12,782 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 23:42:12,782 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 23:42:12,782 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 23:42:12,783 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 23:42:12,783 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 23:42:12,783 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 23:42:12,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 23:42:12,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 23:42:12,783 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 23:42:12,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 23:42:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 23:42:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 23:42:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 23:42:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 23:42:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 23:42:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 23:42:12,785 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 23:42:12,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 23:42:12,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 23:42:12,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 23:42:12,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 23:42:12,785 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 23:42:12,785 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 23:42:12,786 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 23:42:12,786 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 23:42:12,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 23:42:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:42:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:42:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 23:42:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 23:42:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:42:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 23:42:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 23:42:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:42:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 23:42:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:42:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 23:42:12,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 23:42:12,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:42:12,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 23:42:12,788 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 23:42:12,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:42:12,788 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 23:42:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 23:42:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:42:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 23:42:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 23:42:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 23:42:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 23:42:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 23:42:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 23:42:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 23:42:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 23:42:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 23:42:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 23:42:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 23:42:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 23:42:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 23:42:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 23:42:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:42:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 23:42:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 23:42:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 23:42:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 23:42:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 23:42:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 23:42:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 23:42:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 23:42:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 23:42:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 23:42:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 23:42:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 23:42:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 23:42:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 23:42:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 23:42:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 23:42:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 23:42:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 23:42:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:42:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 23:42:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:42:13,880 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:42:13,881 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 23:42:13,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:42:13 BoogieIcfgContainer [2020-08-21 23:42:13,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:42:13,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:42:13,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:42:13,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:42:13,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:42:11" (1/3) ... [2020-08-21 23:42:13,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193068aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:42:13, skipping insertion in model container [2020-08-21 23:42:13,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:42:12" (2/3) ... [2020-08-21 23:42:13,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@193068aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:42:13, skipping insertion in model container [2020-08-21 23:42:13,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:42:13" (3/3) ... [2020-08-21 23:42:13,899 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product43.cil.c [2020-08-21 23:42:13,909 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:42:13,917 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:42:13,931 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:42:13,957 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:42:13,957 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:42:13,958 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:42:13,958 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:42:13,958 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:42:13,958 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:42:13,958 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:42:13,958 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:42:13,979 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-21 23:42:13,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 23:42:13,989 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:13,990 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 23:42:13,991 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:13,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:13,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1951083148, now seen corresponding path program 1 times [2020-08-21 23:42:14,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:14,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339871269] [2020-08-21 23:42:14,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:14,622 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:14,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:14,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:14,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:14,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:14,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:14,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:14,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:14,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:42:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:14,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:14,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:42:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:14,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 23:42:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:14,789 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 23:42:14,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339871269] [2020-08-21 23:42:14,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:42:14,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:42:14,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984160531] [2020-08-21 23:42:14,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:42:14,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:14,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:42:14,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:42:14,815 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 4 states. [2020-08-21 23:42:15,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:15,873 INFO L93 Difference]: Finished difference Result 308 states and 391 transitions. [2020-08-21 23:42:15,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 23:42:15,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 23:42:15,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:15,891 INFO L225 Difference]: With dead ends: 308 [2020-08-21 23:42:15,891 INFO L226 Difference]: Without dead ends: 170 [2020-08-21 23:42:15,896 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 23:42:15,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-21 23:42:15,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 139. [2020-08-21 23:42:15,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-21 23:42:15,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 161 transitions. [2020-08-21 23:42:16,002 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 161 transitions. Word has length 59 [2020-08-21 23:42:16,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:16,002 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 161 transitions. [2020-08-21 23:42:16,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:42:16,003 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 161 transitions. [2020-08-21 23:42:16,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 23:42:16,015 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:16,016 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 23:42:16,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:42:16,016 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:16,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:16,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1220523940, now seen corresponding path program 1 times [2020-08-21 23:42:16,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:16,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062081455] [2020-08-21 23:42:16,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,380 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:16,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 23:42:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 23:42:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 23:42:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:16,464 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 23:42:16,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062081455] [2020-08-21 23:42:16,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:42:16,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:42:16,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048315867] [2020-08-21 23:42:16,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:42:16,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:16,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:42:16,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:42:16,468 INFO L87 Difference]: Start difference. First operand 139 states and 161 transitions. Second operand 5 states. [2020-08-21 23:42:16,919 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:17,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:17,731 INFO L93 Difference]: Finished difference Result 244 states and 293 transitions. [2020-08-21 23:42:17,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:42:17,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 23:42:17,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:17,738 INFO L225 Difference]: With dead ends: 244 [2020-08-21 23:42:17,738 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 23:42:17,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:42:17,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 23:42:17,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 130. [2020-08-21 23:42:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-21 23:42:17,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2020-08-21 23:42:17,778 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 60 [2020-08-21 23:42:17,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:17,779 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2020-08-21 23:42:17,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:42:17,779 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2020-08-21 23:42:17,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 23:42:17,781 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:17,781 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 23:42:17,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:42:17,781 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:17,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:17,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1125066517, now seen corresponding path program 1 times [2020-08-21 23:42:17,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:17,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213414501] [2020-08-21 23:42:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:18,121 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:18,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:18,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:18,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:18,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:18,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:18,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:18,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:42:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:18,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:18,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 23:42:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:18,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 23:42:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:18,249 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 23:42:18,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213414501] [2020-08-21 23:42:18,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:42:18,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:42:18,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877806052] [2020-08-21 23:42:18,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:42:18,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:18,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:42:18,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:42:18,253 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand 9 states. [2020-08-21 23:42:18,648 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:18,954 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:19,203 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:19,431 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:20,280 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:21,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:21,782 INFO L93 Difference]: Finished difference Result 435 states and 529 transitions. [2020-08-21 23:42:21,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 23:42:21,783 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 23:42:21,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:21,788 INFO L225 Difference]: With dead ends: 435 [2020-08-21 23:42:21,788 INFO L226 Difference]: Without dead ends: 333 [2020-08-21 23:42:21,790 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 23:42:21,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-08-21 23:42:21,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 268. [2020-08-21 23:42:21,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-21 23:42:21,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 318 transitions. [2020-08-21 23:42:21,855 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 318 transitions. Word has length 64 [2020-08-21 23:42:21,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:21,856 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 318 transitions. [2020-08-21 23:42:21,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:42:21,856 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 318 transitions. [2020-08-21 23:42:21,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 23:42:21,858 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:21,858 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 23:42:21,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:42:21,858 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:21,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:21,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1836372268, now seen corresponding path program 1 times [2020-08-21 23:42:21,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:21,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982144836] [2020-08-21 23:42:21,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,136 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:22,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:42:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 23:42:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 23:42:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 23:42:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:22,266 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 23:42:22,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982144836] [2020-08-21 23:42:22,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:42:22,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:42:22,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176789392] [2020-08-21 23:42:22,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:42:22,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:22,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:42:22,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:42:22,269 INFO L87 Difference]: Start difference. First operand 268 states and 318 transitions. Second operand 9 states. [2020-08-21 23:42:22,609 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:23,234 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:24,094 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:24,324 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:24,599 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:24,860 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:25,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:25,281 INFO L93 Difference]: Finished difference Result 679 states and 862 transitions. [2020-08-21 23:42:25,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 23:42:25,282 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 23:42:25,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:25,287 INFO L225 Difference]: With dead ends: 679 [2020-08-21 23:42:25,287 INFO L226 Difference]: Without dead ends: 439 [2020-08-21 23:42:25,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 23:42:25,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-08-21 23:42:25,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 379. [2020-08-21 23:42:25,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-21 23:42:25,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 451 transitions. [2020-08-21 23:42:25,398 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 451 transitions. Word has length 70 [2020-08-21 23:42:25,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:25,399 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 451 transitions. [2020-08-21 23:42:25,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:42:25,399 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 451 transitions. [2020-08-21 23:42:25,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 23:42:25,401 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:25,401 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, 1] [2020-08-21 23:42:25,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:42:25,402 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:25,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:25,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1329110427, now seen corresponding path program 1 times [2020-08-21 23:42:25,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:25,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302586839] [2020-08-21 23:42:25,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,655 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:25,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:42:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:42:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 23:42:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 23:42:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:25,805 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 23:42:25,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302586839] [2020-08-21 23:42:25,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:42:25,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:42:25,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281543146] [2020-08-21 23:42:25,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:42:25,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:25,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:42:25,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:42:25,809 INFO L87 Difference]: Start difference. First operand 379 states and 451 transitions. Second operand 9 states. [2020-08-21 23:42:26,224 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:27,132 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:27,360 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:27,615 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:27,873 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:29,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:29,097 INFO L93 Difference]: Finished difference Result 1185 states and 1563 transitions. [2020-08-21 23:42:29,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 23:42:29,098 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-08-21 23:42:29,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:29,104 INFO L225 Difference]: With dead ends: 1185 [2020-08-21 23:42:29,104 INFO L226 Difference]: Without dead ends: 834 [2020-08-21 23:42:29,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 23:42:29,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-08-21 23:42:29,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 717. [2020-08-21 23:42:29,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 717 states. [2020-08-21 23:42:29,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 858 transitions. [2020-08-21 23:42:29,238 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 858 transitions. Word has length 102 [2020-08-21 23:42:29,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:29,238 INFO L479 AbstractCegarLoop]: Abstraction has 717 states and 858 transitions. [2020-08-21 23:42:29,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:42:29,239 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 858 transitions. [2020-08-21 23:42:29,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 23:42:29,242 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:29,242 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, 1] [2020-08-21 23:42:29,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:42:29,242 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:29,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:29,243 INFO L82 PathProgramCache]: Analyzing trace with hash 359529404, now seen corresponding path program 1 times [2020-08-21 23:42:29,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:29,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1199441068] [2020-08-21 23:42:29,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,496 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:29,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:42:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:42:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 23:42:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 23:42:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:29,604 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 23:42:29,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1199441068] [2020-08-21 23:42:29,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:42:29,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:42:29,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025907751] [2020-08-21 23:42:29,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:42:29,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:29,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:42:29,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:42:29,606 INFO L87 Difference]: Start difference. First operand 717 states and 858 transitions. Second operand 9 states. [2020-08-21 23:42:30,591 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:30,830 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:31,079 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:31,325 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:31,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:31,985 INFO L93 Difference]: Finished difference Result 1536 states and 1964 transitions. [2020-08-21 23:42:31,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 23:42:31,985 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-08-21 23:42:31,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:31,992 INFO L225 Difference]: With dead ends: 1536 [2020-08-21 23:42:31,996 INFO L226 Difference]: Without dead ends: 847 [2020-08-21 23:42:32,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:42:32,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-08-21 23:42:32,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 737. [2020-08-21 23:42:32,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-08-21 23:42:32,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 878 transitions. [2020-08-21 23:42:32,157 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 878 transitions. Word has length 102 [2020-08-21 23:42:32,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:32,158 INFO L479 AbstractCegarLoop]: Abstraction has 737 states and 878 transitions. [2020-08-21 23:42:32,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:42:32,158 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 878 transitions. [2020-08-21 23:42:32,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-08-21 23:42:32,163 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:32,164 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, 1] [2020-08-21 23:42:32,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:42:32,165 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:32,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:32,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1689858438, now seen corresponding path program 1 times [2020-08-21 23:42:32,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:32,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274156868] [2020-08-21 23:42:32,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,436 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:32,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:32,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 23:42:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 23:42:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:32,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 23:42:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 23:42:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:32,579 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 23:42:32,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274156868] [2020-08-21 23:42:32,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:42:32,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 23:42:32,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741596186] [2020-08-21 23:42:32,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 23:42:32,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:32,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 23:42:32,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 23:42:32,585 INFO L87 Difference]: Start difference. First operand 737 states and 878 transitions. Second operand 11 states. [2020-08-21 23:42:33,123 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:33,367 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:33,590 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:34,334 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:34,571 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:34,800 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:35,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:35,640 INFO L93 Difference]: Finished difference Result 1360 states and 1702 transitions. [2020-08-21 23:42:35,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 23:42:35,641 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 102 [2020-08-21 23:42:35,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:35,648 INFO L225 Difference]: With dead ends: 1360 [2020-08-21 23:42:35,648 INFO L226 Difference]: Without dead ends: 651 [2020-08-21 23:42:35,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 23:42:35,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2020-08-21 23:42:35,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 578. [2020-08-21 23:42:35,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-08-21 23:42:35,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 674 transitions. [2020-08-21 23:42:35,762 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 674 transitions. Word has length 102 [2020-08-21 23:42:35,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:35,762 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 674 transitions. [2020-08-21 23:42:35,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 23:42:35,763 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 674 transitions. [2020-08-21 23:42:35,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-08-21 23:42:35,766 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:35,766 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, 1, 1, 1, 1, 1] [2020-08-21 23:42:35,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 23:42:35,766 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:35,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:35,767 INFO L82 PathProgramCache]: Analyzing trace with hash -764679949, now seen corresponding path program 1 times [2020-08-21 23:42:35,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:35,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927862131] [2020-08-21 23:42:35,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,180 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:36,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:42:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:42:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 23:42:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 23:42:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 23:42:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:36,406 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 23:42:36,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927862131] [2020-08-21 23:42:36,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:42:36,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 23:42:36,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483254329] [2020-08-21 23:42:36,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 23:42:36,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:36,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 23:42:36,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:42:36,410 INFO L87 Difference]: Start difference. First operand 578 states and 674 transitions. Second operand 12 states. [2020-08-21 23:42:36,890 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:37,492 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:38,132 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:38,459 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:38,694 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:38,971 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:39,219 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:40,453 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:40,715 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:41,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:41,250 INFO L93 Difference]: Finished difference Result 1691 states and 2129 transitions. [2020-08-21 23:42:41,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 23:42:41,251 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 106 [2020-08-21 23:42:41,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:41,260 INFO L225 Difference]: With dead ends: 1691 [2020-08-21 23:42:41,260 INFO L226 Difference]: Without dead ends: 1313 [2020-08-21 23:42:41,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 23:42:41,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-08-21 23:42:41,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1197. [2020-08-21 23:42:41,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-08-21 23:42:41,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1399 transitions. [2020-08-21 23:42:41,427 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1399 transitions. Word has length 106 [2020-08-21 23:42:41,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:41,427 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1399 transitions. [2020-08-21 23:42:41,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 23:42:41,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1399 transitions. [2020-08-21 23:42:41,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-21 23:42:41,430 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:41,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:41,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 23:42:41,431 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:41,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:41,432 INFO L82 PathProgramCache]: Analyzing trace with hash -60868023, now seen corresponding path program 1 times [2020-08-21 23:42:41,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:41,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314294365] [2020-08-21 23:42:41,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:41,808 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:41,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:41,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:41,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:41,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:41,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:41,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:41,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:42:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:41,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 23:42:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:41,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:41,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:41,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:42:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:41,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:41,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:41,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:41,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:41,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:42,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:42,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 23:42:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:42,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:42,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 23:42:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:42,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:42,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 23:42:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:42,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-21 23:42:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:42,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:42,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-21 23:42:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:42,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 23:42:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:42,211 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-21 23:42:42,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314294365] [2020-08-21 23:42:42,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:42:42,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 23:42:42,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156861549] [2020-08-21 23:42:42,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 23:42:42,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:42,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 23:42:42,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 23:42:42,215 INFO L87 Difference]: Start difference. First operand 1197 states and 1399 transitions. Second operand 16 states. [2020-08-21 23:42:42,798 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:43,121 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 23:42:43,373 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 23:42:43,620 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 23:42:44,212 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:44,508 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:44,875 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 23:42:45,143 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 23:42:46,176 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:46,627 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:46,916 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:47,252 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:47,700 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 23:42:48,186 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 23:42:48,423 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:48,671 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:48,920 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:49,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:49,356 INFO L93 Difference]: Finished difference Result 2225 states and 2688 transitions. [2020-08-21 23:42:49,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-21 23:42:49,357 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 149 [2020-08-21 23:42:49,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:49,363 INFO L225 Difference]: With dead ends: 2225 [2020-08-21 23:42:49,363 INFO L226 Difference]: Without dead ends: 1222 [2020-08-21 23:42:49,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=548, Invalid=2002, Unknown=0, NotChecked=0, Total=2550 [2020-08-21 23:42:49,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2020-08-21 23:42:49,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1102. [2020-08-21 23:42:49,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-21 23:42:49,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1268 transitions. [2020-08-21 23:42:49,576 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1268 transitions. Word has length 149 [2020-08-21 23:42:49,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:49,577 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1268 transitions. [2020-08-21 23:42:49,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 23:42:49,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1268 transitions. [2020-08-21 23:42:49,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-08-21 23:42:49,588 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:49,589 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:49,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 23:42:49,590 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:49,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:49,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1576976523, now seen corresponding path program 1 times [2020-08-21 23:42:49,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:49,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053859216] [2020-08-21 23:42:49,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:49,911 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:49,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:49,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:49,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:49,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:49,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:49,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:49,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:42:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:49,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 23:42:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:49,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:49,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:49,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:42:49,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:49,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:49,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:49,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:49,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:49,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:49,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:49,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 23:42:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 23:42:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 23:42:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-21 23:42:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 23:42:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-21 23:42:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-21 23:42:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:42:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-21 23:42:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-21 23:42:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-21 23:42:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-21 23:42:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 104 proven. 48 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2020-08-21 23:42:50,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053859216] [2020-08-21 23:42:50,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:42:50,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 23:42:50,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84688737] [2020-08-21 23:42:50,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 23:42:50,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:50,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 23:42:50,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-21 23:42:50,393 INFO L87 Difference]: Start difference. First operand 1102 states and 1268 transitions. Second operand 16 states. [2020-08-21 23:42:51,819 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:42:52,085 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:52,322 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:52,558 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:53,675 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:55,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:42:55,356 INFO L93 Difference]: Finished difference Result 3031 states and 3632 transitions. [2020-08-21 23:42:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 23:42:55,357 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 302 [2020-08-21 23:42:55,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:42:55,367 INFO L225 Difference]: With dead ends: 3031 [2020-08-21 23:42:55,367 INFO L226 Difference]: Without dead ends: 1752 [2020-08-21 23:42:55,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2020-08-21 23:42:55,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2020-08-21 23:42:55,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1430. [2020-08-21 23:42:55,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2020-08-21 23:42:55,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1674 transitions. [2020-08-21 23:42:55,604 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1674 transitions. Word has length 302 [2020-08-21 23:42:55,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:42:55,606 INFO L479 AbstractCegarLoop]: Abstraction has 1430 states and 1674 transitions. [2020-08-21 23:42:55,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 23:42:55,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1674 transitions. [2020-08-21 23:42:55,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-08-21 23:42:55,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:42:55,613 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-08-21 23:42:55,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 23:42:55,614 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:42:55,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:42:55,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1865964208, now seen corresponding path program 1 times [2020-08-21 23:42:55,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:42:55,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706120264] [2020-08-21 23:42:55,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:42:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:55,999 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:42:55,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:42:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:42:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:42:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 23:42:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:42:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 23:42:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 23:42:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 23:42:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:42:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-21 23:42:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:42:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 23:42:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:42:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-08-21 23:42:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-08-21 23:42:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:42:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-21 23:42:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:42:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-21 23:42:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:42:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:42:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:42:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:42:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-21 23:42:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-21 23:42:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:42:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 111 proven. 44 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-08-21 23:42:56,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706120264] [2020-08-21 23:42:56,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:42:56,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 23:42:56,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377168686] [2020-08-21 23:42:56,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 23:42:56,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:42:56,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 23:42:56,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-21 23:42:56,655 INFO L87 Difference]: Start difference. First operand 1430 states and 1674 transitions. Second operand 17 states. [2020-08-21 23:42:57,531 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:42:57,835 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:58,080 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:58,315 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:42:58,932 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:42:59,887 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:43:00,130 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:43:00,599 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:43:01,242 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:43:01,843 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:43:02,123 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:43:02,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:43:02,908 INFO L93 Difference]: Finished difference Result 2555 states and 3056 transitions. [2020-08-21 23:43:02,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-21 23:43:02,908 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 308 [2020-08-21 23:43:02,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:43:02,917 INFO L225 Difference]: With dead ends: 2555 [2020-08-21 23:43:02,917 INFO L226 Difference]: Without dead ends: 1457 [2020-08-21 23:43:02,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=370, Invalid=1436, Unknown=0, NotChecked=0, Total=1806 [2020-08-21 23:43:02,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2020-08-21 23:43:03,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1403. [2020-08-21 23:43:03,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1403 states. [2020-08-21 23:43:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1626 transitions. [2020-08-21 23:43:03,163 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1626 transitions. Word has length 308 [2020-08-21 23:43:03,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:43:03,165 INFO L479 AbstractCegarLoop]: Abstraction has 1403 states and 1626 transitions. [2020-08-21 23:43:03,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 23:43:03,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1626 transitions. [2020-08-21 23:43:03,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-08-21 23:43:03,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:43:03,175 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:43:03,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 23:43:03,175 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:43:03,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:43:03,176 INFO L82 PathProgramCache]: Analyzing trace with hash 2055130084, now seen corresponding path program 1 times [2020-08-21 23:43:03,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:43:03,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451078001] [2020-08-21 23:43:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:43:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,493 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:43:03,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:43:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:43:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:43:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:43:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:43:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 23:43:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:43:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:43:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 23:43:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:03,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 23:43:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:43:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 23:43:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:43:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:43:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-08-21 23:43:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:43:03,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 23:43:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:43:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-21 23:43:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-08-21 23:43:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:43:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-08-21 23:43:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-21 23:43:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:43:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-21 23:43:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-08-21 23:43:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 82 proven. 4 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-08-21 23:43:03,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451078001] [2020-08-21 23:43:03,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:43:03,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-21 23:43:03,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125622441] [2020-08-21 23:43:03,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:43:03,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:43:03,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:43:03,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:43:03,774 INFO L87 Difference]: Start difference. First operand 1403 states and 1626 transitions. Second operand 9 states. [2020-08-21 23:43:04,604 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:43:05,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:43:05,791 INFO L93 Difference]: Finished difference Result 1737 states and 2054 transitions. [2020-08-21 23:43:05,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 23:43:05,792 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 309 [2020-08-21 23:43:05,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:43:05,793 INFO L225 Difference]: With dead ends: 1737 [2020-08-21 23:43:05,793 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 23:43:05,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2020-08-21 23:43:05,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 23:43:05,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 23:43:05,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 23:43:05,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 23:43:05,798 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 309 [2020-08-21 23:43:05,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:43:05,799 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 23:43:05,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:43:05,799 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 23:43:05,799 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 23:43:05,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 23:43:05,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 23:43:06,834 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 255 [2020-08-21 23:43:08,031 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 265