/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:26:36,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:26:36,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:26:36,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:26:36,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:26:36,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:26:36,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:26:36,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:26:36,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:26:36,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:26:36,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:26:36,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:26:36,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:26:36,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:26:36,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:26:36,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:26:36,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:26:36,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:26:36,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:26:36,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:26:36,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:26:36,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:26:36,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:26:36,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:26:36,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:26:36,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:26:36,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:26:36,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:26:36,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:26:36,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:26:36,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:26:36,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:26:36,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:26:36,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:26:36,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:26:36,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:26:36,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:26:36,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:26:36,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:26:36,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:26:36,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:26:36,742 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 [2020-08-18 10:26:36,779 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:26:36,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:26:36,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:26:36,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:26:36,782 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:26:36,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:26:36,783 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:26:36,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:26:36,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:26:36,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:26:36,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:26:36,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:26:36,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:26:36,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:26:36,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:26:36,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:26:36,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:26:36,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:26:36,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:26:36,787 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:26:36,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:26:36,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:26:36,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:26:36,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:26:36,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:26:36,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:26:36,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:26:36,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:26:36,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:26:36,789 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 -> false [2020-08-18 10:26:37,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:26:37,144 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:26:37,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:26:37,151 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:26:37,151 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:26:37,152 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2020-08-18 10:26:37,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2261718ff/5fcd7274a0af4d80a372786ac5a3d961/FLAG105e0135a [2020-08-18 10:26:37,749 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:26:37,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2020-08-18 10:26:37,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2261718ff/5fcd7274a0af4d80a372786ac5a3d961/FLAG105e0135a [2020-08-18 10:26:37,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2261718ff/5fcd7274a0af4d80a372786ac5a3d961 [2020-08-18 10:26:38,005 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:26:38,007 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:26:38,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:26:38,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:26:38,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:26:38,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:26:37" (1/1) ... [2020-08-18 10:26:38,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ff0ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:38, skipping insertion in model container [2020-08-18 10:26:38,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:26:37" (1/1) ... [2020-08-18 10:26:38,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:26:38,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:26:38,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:26:38,507 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:26:38,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:26:38,630 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:26:38,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:38 WrapperNode [2020-08-18 10:26:38,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:26:38,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:26:38,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:26:38,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:26:38,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:38" (1/1) ... [2020-08-18 10:26:38,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:38" (1/1) ... [2020-08-18 10:26:38,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:38" (1/1) ... [2020-08-18 10:26:38,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:38" (1/1) ... [2020-08-18 10:26:38,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:38" (1/1) ... [2020-08-18 10:26:38,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:38" (1/1) ... [2020-08-18 10:26:38,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:38" (1/1) ... [2020-08-18 10:26:38,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:26:38,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:26:38,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:26:38,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:26:38,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:38" (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 [2020-08-18 10:26:38,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:26:38,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:26:38,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:26:38,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:26:38,809 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:26:38,809 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:26:38,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:26:38,810 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:26:38,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:26:38,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:26:38,811 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:26:38,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:26:38,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:26:38,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:26:38,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:26:38,813 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:26:38,813 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:26:38,814 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:26:38,814 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:26:38,814 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:26:38,814 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:26:38,814 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:26:38,814 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:26:38,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:26:38,815 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:26:38,816 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:26:38,816 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:26:38,816 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:26:38,816 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 10:26:38,816 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:26:38,817 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:26:38,817 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:26:38,817 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:26:38,817 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:26:38,818 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:26:38,818 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:26:38,818 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 10:26:38,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 10:26:38,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 10:26:38,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 10:26:38,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:26:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:26:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:26:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:26:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:26:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:26:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:26:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:26:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:26:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:26:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:26:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 10:26:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:26:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:26:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:26:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:26:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:26:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:26:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:26:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:26:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:26:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:26:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:26:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:26:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:26:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:26:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:26:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:26:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:26:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:26:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:26:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:26:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:26:38,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:26:38,825 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:26:38,825 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:26:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 10:26:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:26:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:26:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:26:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:26:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:26:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:26:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:26:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:26:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 10:26:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 10:26:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:26:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 10:26:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:26:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:26:38,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:26:38,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:26:38,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:26:39,984 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:26:39,985 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:26:39,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:26:39 BoogieIcfgContainer [2020-08-18 10:26:39,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:26:39,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:26:39,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:26:39,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:26:39,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:26:37" (1/3) ... [2020-08-18 10:26:39,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a62440e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:26:39, skipping insertion in model container [2020-08-18 10:26:39,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:38" (2/3) ... [2020-08-18 10:26:39,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a62440e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:26:39, skipping insertion in model container [2020-08-18 10:26:39,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:26:39" (3/3) ... [2020-08-18 10:26:39,999 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product35.cil.c [2020-08-18 10:26:40,010 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:26:40,019 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:26:40,033 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:26:40,059 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:26:40,060 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:26:40,060 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:26:40,060 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:26:40,060 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:26:40,061 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:26:40,061 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:26:40,061 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:26:40,083 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2020-08-18 10:26:40,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 10:26:40,094 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:26:40,095 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] [2020-08-18 10:26:40,096 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:26:40,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:26:40,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1963515353, now seen corresponding path program 1 times [2020-08-18 10:26:40,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:26:40,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471070014] [2020-08-18 10:26:40,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:26:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:40,784 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:26:40,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:40,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:26:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:40,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:26:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:40,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:26:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:40,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:26:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:40,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:26:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:40,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:26:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:40,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:40,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:26:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:40,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:26:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:40,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:26:40,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471070014] [2020-08-18 10:26:40,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:26:40,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:26:40,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803328404] [2020-08-18 10:26:40,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:26:40,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:26:40,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:26:40,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:26:40,973 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 4 states. [2020-08-18 10:26:42,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:26:42,039 INFO L93 Difference]: Finished difference Result 276 states and 357 transitions. [2020-08-18 10:26:42,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 10:26:42,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 10:26:42,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:26:42,063 INFO L225 Difference]: With dead ends: 276 [2020-08-18 10:26:42,063 INFO L226 Difference]: Without dead ends: 153 [2020-08-18 10:26:42,073 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 [2020-08-18 10:26:42,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-18 10:26:42,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 124. [2020-08-18 10:26:42,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-18 10:26:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2020-08-18 10:26:42,168 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 59 [2020-08-18 10:26:42,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:26:42,168 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2020-08-18 10:26:42,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:26:42,169 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2020-08-18 10:26:42,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 10:26:42,173 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:26:42,173 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] [2020-08-18 10:26:42,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:26:42,174 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:26:42,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:26:42,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1851002156, now seen corresponding path program 1 times [2020-08-18 10:26:42,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:26:42,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732988274] [2020-08-18 10:26:42,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:26:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:42,621 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:26:42,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:42,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:26:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:42,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:26:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:42,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:26:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:42,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:26:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:42,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:26:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:42,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:26:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:42,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:42,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 10:26:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:42,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 10:26:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:26:42,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732988274] [2020-08-18 10:26:42,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:26:42,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:26:42,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023526027] [2020-08-18 10:26:42,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:26:42,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:26:42,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:26:42,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:26:42,768 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand 9 states. [2020-08-18 10:26:43,167 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:26:43,486 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:26:43,761 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:26:44,005 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:26:45,007 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:26:46,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:26:46,216 INFO L93 Difference]: Finished difference Result 423 states and 533 transitions. [2020-08-18 10:26:46,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 10:26:46,216 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 10:26:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:26:46,226 INFO L225 Difference]: With dead ends: 423 [2020-08-18 10:26:46,229 INFO L226 Difference]: Without dead ends: 327 [2020-08-18 10:26:46,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 10:26:46,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-18 10:26:46,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 265. [2020-08-18 10:26:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-08-18 10:26:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2020-08-18 10:26:46,362 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 64 [2020-08-18 10:26:46,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:26:46,363 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2020-08-18 10:26:46,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:26:46,363 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2020-08-18 10:26:46,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-18 10:26:46,372 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:26:46,375 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] [2020-08-18 10:26:46,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:26:46,375 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:26:46,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:26:46,376 INFO L82 PathProgramCache]: Analyzing trace with hash 2013051811, now seen corresponding path program 1 times [2020-08-18 10:26:46,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:26:46,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417293740] [2020-08-18 10:26:46,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:26:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:46,677 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:26:46,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:46,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:26:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:46,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:26:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:46,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:26:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:46,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:26:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:46,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:26:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:46,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:26:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:46,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:46,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 10:26:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:46,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:26:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:46,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 10:26:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:46,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 10:26:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:46,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:26:46,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417293740] [2020-08-18 10:26:46,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:26:46,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 10:26:46,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750686772] [2020-08-18 10:26:46,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 10:26:46,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:26:46,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 10:26:46,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:26:46,787 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand 7 states. [2020-08-18 10:26:47,129 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:26:48,427 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:26:49,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:26:49,022 INFO L93 Difference]: Finished difference Result 782 states and 1053 transitions. [2020-08-18 10:26:49,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 10:26:49,022 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2020-08-18 10:26:49,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:26:49,031 INFO L225 Difference]: With dead ends: 782 [2020-08-18 10:26:49,031 INFO L226 Difference]: Without dead ends: 545 [2020-08-18 10:26:49,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-08-18 10:26:49,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-08-18 10:26:49,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 452. [2020-08-18 10:26:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-08-18 10:26:49,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 561 transitions. [2020-08-18 10:26:49,145 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 561 transitions. Word has length 72 [2020-08-18 10:26:49,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:26:49,145 INFO L479 AbstractCegarLoop]: Abstraction has 452 states and 561 transitions. [2020-08-18 10:26:49,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 10:26:49,146 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 561 transitions. [2020-08-18 10:26:49,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 10:26:49,148 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:26:49,148 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] [2020-08-18 10:26:49,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:26:49,149 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:26:49,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:26:49,149 INFO L82 PathProgramCache]: Analyzing trace with hash -601082987, now seen corresponding path program 1 times [2020-08-18 10:26:49,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:26:49,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849344312] [2020-08-18 10:26:49,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:26:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:49,496 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:26:49,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:49,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:26:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:49,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:26:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:49,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:26:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:49,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:26:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:49,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:26:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:49,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:26:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:49,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:26:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:49,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:49,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 10:26:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:49,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 10:26:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 10:26:49,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849344312] [2020-08-18 10:26:49,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:26:49,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:26:49,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137789741] [2020-08-18 10:26:49,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:26:49,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:26:49,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:26:49,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:26:49,627 INFO L87 Difference]: Start difference. First operand 452 states and 561 transitions. Second operand 9 states. [2020-08-18 10:26:50,005 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:26:50,599 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:26:51,409 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:26:51,783 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:26:52,164 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:26:52,401 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:26:52,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:26:52,974 INFO L93 Difference]: Finished difference Result 948 states and 1227 transitions. [2020-08-18 10:26:52,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 10:26:52,975 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 10:26:52,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:26:52,981 INFO L225 Difference]: With dead ends: 948 [2020-08-18 10:26:52,981 INFO L226 Difference]: Without dead ends: 524 [2020-08-18 10:26:52,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 10:26:52,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-08-18 10:26:53,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 449. [2020-08-18 10:26:53,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-08-18 10:26:53,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 552 transitions. [2020-08-18 10:26:53,093 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 552 transitions. Word has length 70 [2020-08-18 10:26:53,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:26:53,094 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 552 transitions. [2020-08-18 10:26:53,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:26:53,094 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 552 transitions. [2020-08-18 10:26:53,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 10:26:53,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:26:53,097 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] [2020-08-18 10:26:53,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:26:53,097 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:26:53,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:26:53,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1418290782, now seen corresponding path program 1 times [2020-08-18 10:26:53,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:26:53,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515022478] [2020-08-18 10:26:53,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:26:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,393 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:26:53,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:26:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:26:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:26:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:26:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:26:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:26:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 10:26:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:26:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:26:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 10:26:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 10:26:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:26:53,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515022478] [2020-08-18 10:26:53,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:26:53,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:26:53,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23933516] [2020-08-18 10:26:53,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:26:53,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:26:53,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:26:53,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:26:53,532 INFO L87 Difference]: Start difference. First operand 449 states and 552 transitions. Second operand 9 states. [2020-08-18 10:26:54,070 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:26:55,084 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:26:55,396 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:26:55,689 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:26:55,950 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:26:57,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:26:57,239 INFO L93 Difference]: Finished difference Result 1360 states and 1888 transitions. [2020-08-18 10:26:57,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 10:26:57,242 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-18 10:26:57,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:26:57,250 INFO L225 Difference]: With dead ends: 1360 [2020-08-18 10:26:57,251 INFO L226 Difference]: Without dead ends: 939 [2020-08-18 10:26:57,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:26:57,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-08-18 10:26:57,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 795. [2020-08-18 10:26:57,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-18 10:26:57,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 992 transitions. [2020-08-18 10:26:57,395 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 992 transitions. Word has length 87 [2020-08-18 10:26:57,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:26:57,398 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 992 transitions. [2020-08-18 10:26:57,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:26:57,398 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 992 transitions. [2020-08-18 10:26:57,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 10:26:57,403 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:26:57,403 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] [2020-08-18 10:26:57,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:26:57,403 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:26:57,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:26:57,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1655372524, now seen corresponding path program 1 times [2020-08-18 10:26:57,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:26:57,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269046970] [2020-08-18 10:26:57,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:26:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,731 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:26:57,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:26:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:26:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:26:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:26:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:26:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:26:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 10:26:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:26:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:26:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 10:26:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 10:26:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:57,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:26:57,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269046970] [2020-08-18 10:26:57,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:26:57,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:26:57,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962939273] [2020-08-18 10:26:57,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:26:57,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:26:57,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:26:57,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:26:57,824 INFO L87 Difference]: Start difference. First operand 795 states and 992 transitions. Second operand 6 states. [2020-08-18 10:26:58,327 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:26:59,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:26:59,285 INFO L93 Difference]: Finished difference Result 1342 states and 1669 transitions. [2020-08-18 10:26:59,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:26:59,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-08-18 10:26:59,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:26:59,293 INFO L225 Difference]: With dead ends: 1342 [2020-08-18 10:26:59,294 INFO L226 Difference]: Without dead ends: 783 [2020-08-18 10:26:59,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:26:59,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-08-18 10:26:59,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 681. [2020-08-18 10:26:59,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2020-08-18 10:26:59,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 812 transitions. [2020-08-18 10:26:59,416 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 812 transitions. Word has length 83 [2020-08-18 10:26:59,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:26:59,417 INFO L479 AbstractCegarLoop]: Abstraction has 681 states and 812 transitions. [2020-08-18 10:26:59,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:26:59,417 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 812 transitions. [2020-08-18 10:26:59,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 10:26:59,420 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:26:59,420 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] [2020-08-18 10:26:59,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:26:59,420 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:26:59,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:26:59,421 INFO L82 PathProgramCache]: Analyzing trace with hash 765386145, now seen corresponding path program 1 times [2020-08-18 10:26:59,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:26:59,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736076071] [2020-08-18 10:26:59,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:26:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,693 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:26:59,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:26:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:26:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:26:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:26:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:26:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:26:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:26:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 10:26:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:26:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:26:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:26:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 10:26:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 10:26:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:26:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:26:59,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736076071] [2020-08-18 10:26:59,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:26:59,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:26:59,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609108206] [2020-08-18 10:26:59,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:26:59,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:26:59,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:26:59,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:26:59,807 INFO L87 Difference]: Start difference. First operand 681 states and 812 transitions. Second operand 9 states. [2020-08-18 10:27:00,856 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:01,153 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:01,440 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:01,678 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:02,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:27:02,290 INFO L93 Difference]: Finished difference Result 1456 states and 1829 transitions. [2020-08-18 10:27:02,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 10:27:02,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-18 10:27:02,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:27:02,296 INFO L225 Difference]: With dead ends: 1456 [2020-08-18 10:27:02,297 INFO L226 Difference]: Without dead ends: 803 [2020-08-18 10:27:02,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:27:02,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-08-18 10:27:02,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 701. [2020-08-18 10:27:02,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-08-18 10:27:02,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 832 transitions. [2020-08-18 10:27:02,404 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 832 transitions. Word has length 87 [2020-08-18 10:27:02,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:27:02,404 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 832 transitions. [2020-08-18 10:27:02,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:27:02,404 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 832 transitions. [2020-08-18 10:27:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 10:27:02,407 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:27:02,408 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] [2020-08-18 10:27:02,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:27:02,408 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:27:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:27:02,408 INFO L82 PathProgramCache]: Analyzing trace with hash -2143377757, now seen corresponding path program 1 times [2020-08-18 10:27:02,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:27:02,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391764358] [2020-08-18 10:27:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:27:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:02,658 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:27:02,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:02,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:27:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:02,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:02,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:27:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:02,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:27:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:02,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:27:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:02,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 10:27:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:02,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:02,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 10:27:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:02,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:02,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:02,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:27:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:02,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 10:27:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:02,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 10:27:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:27:02,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391764358] [2020-08-18 10:27:02,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:27:02,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 10:27:02,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272875910] [2020-08-18 10:27:02,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 10:27:02,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:27:02,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 10:27:02,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:27:02,873 INFO L87 Difference]: Start difference. First operand 701 states and 832 transitions. Second operand 11 states. [2020-08-18 10:27:03,665 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:03,881 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:04,116 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:04,825 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:05,127 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:05,379 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:06,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:27:06,122 INFO L93 Difference]: Finished difference Result 1322 states and 1646 transitions. [2020-08-18 10:27:06,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 10:27:06,123 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-08-18 10:27:06,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:27:06,127 INFO L225 Difference]: With dead ends: 1322 [2020-08-18 10:27:06,127 INFO L226 Difference]: Without dead ends: 649 [2020-08-18 10:27:06,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 10:27:06,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-08-18 10:27:06,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 576. [2020-08-18 10:27:06,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-08-18 10:27:06,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 668 transitions. [2020-08-18 10:27:06,224 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 668 transitions. Word has length 87 [2020-08-18 10:27:06,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:27:06,225 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 668 transitions. [2020-08-18 10:27:06,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 10:27:06,225 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 668 transitions. [2020-08-18 10:27:06,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-18 10:27:06,227 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:27:06,227 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] [2020-08-18 10:27:06,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:27:06,228 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:27:06,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:27:06,228 INFO L82 PathProgramCache]: Analyzing trace with hash 858193610, now seen corresponding path program 1 times [2020-08-18 10:27:06,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:27:06,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845632332] [2020-08-18 10:27:06,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:27:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,628 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:27:06,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:27:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:27:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:27:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:27:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:27:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 10:27:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 10:27:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:27:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 10:27:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 10:27:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 10:27:06,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845632332] [2020-08-18 10:27:06,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:27:06,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:27:06,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631508453] [2020-08-18 10:27:06,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:27:06,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:27:06,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:27:06,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:27:06,813 INFO L87 Difference]: Start difference. First operand 576 states and 668 transitions. Second operand 12 states. [2020-08-18 10:27:07,349 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:07,970 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:08,652 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:08,988 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:09,258 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:09,541 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:09,823 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:11,032 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:11,311 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:11,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:27:11,881 INFO L93 Difference]: Finished difference Result 1645 states and 2041 transitions. [2020-08-18 10:27:11,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 10:27:11,886 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-08-18 10:27:11,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:27:11,894 INFO L225 Difference]: With dead ends: 1645 [2020-08-18 10:27:11,894 INFO L226 Difference]: Without dead ends: 1269 [2020-08-18 10:27:11,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 10:27:11,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2020-08-18 10:27:12,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1155. [2020-08-18 10:27:12,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-08-18 10:27:12,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1335 transitions. [2020-08-18 10:27:12,052 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1335 transitions. Word has length 91 [2020-08-18 10:27:12,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:27:12,052 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1335 transitions. [2020-08-18 10:27:12,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:27:12,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1335 transitions. [2020-08-18 10:27:12,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 10:27:12,055 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:27:12,056 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] [2020-08-18 10:27:12,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:27:12,056 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:27:12,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:27:12,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1244109311, now seen corresponding path program 1 times [2020-08-18 10:27:12,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:27:12,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661187221] [2020-08-18 10:27:12,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:27:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,338 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:27:12,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:27:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:27:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:27:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:27:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:27:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:27:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:27:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:27:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:27:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 10:27:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 10:27:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 10:27:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 10:27:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 10:27:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-18 10:27:12,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661187221] [2020-08-18 10:27:12,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:27:12,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 10:27:12,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287423573] [2020-08-18 10:27:12,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 10:27:12,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:27:12,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 10:27:12,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 10:27:12,586 INFO L87 Difference]: Start difference. First operand 1155 states and 1335 transitions. Second operand 16 states. [2020-08-18 10:27:13,232 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:13,596 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 10:27:13,857 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 10:27:14,120 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 10:27:14,779 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:15,090 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:15,487 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:27:15,760 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:27:16,627 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:17,296 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:17,609 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:17,975 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:18,456 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:27:18,927 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 10:27:19,223 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:19,475 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:19,744 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:20,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:27:20,225 INFO L93 Difference]: Finished difference Result 2146 states and 2551 transitions. [2020-08-18 10:27:20,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-18 10:27:20,225 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 134 [2020-08-18 10:27:20,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:27:20,232 INFO L225 Difference]: With dead ends: 2146 [2020-08-18 10:27:20,233 INFO L226 Difference]: Without dead ends: 1185 [2020-08-18 10:27:20,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=548, Invalid=2002, Unknown=0, NotChecked=0, Total=2550 [2020-08-18 10:27:20,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2020-08-18 10:27:20,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1065. [2020-08-18 10:27:20,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2020-08-18 10:27:20,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1223 transitions. [2020-08-18 10:27:20,422 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1223 transitions. Word has length 134 [2020-08-18 10:27:20,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:27:20,423 INFO L479 AbstractCegarLoop]: Abstraction has 1065 states and 1223 transitions. [2020-08-18 10:27:20,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 10:27:20,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1223 transitions. [2020-08-18 10:27:20,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-08-18 10:27:20,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:27:20,431 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:27:20,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 10:27:20,432 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:27:20,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:27:20,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1284254506, now seen corresponding path program 1 times [2020-08-18 10:27:20,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:27:20,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985020178] [2020-08-18 10:27:20,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:27:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,737 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:27:20,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:27:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:27:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:27:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:27:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:27:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:27:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:27:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:27:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:27:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 10:27:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 10:27:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:27:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:20,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 10:27:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 10:27:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:27:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-18 10:27:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 10:27:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 10:27:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:27:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-08-18 10:27:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 10:27:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:21,209 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 76 proven. 31 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2020-08-18 10:27:21,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985020178] [2020-08-18 10:27:21,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:27:21,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 10:27:21,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081679892] [2020-08-18 10:27:21,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 10:27:21,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:27:21,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 10:27:21,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-18 10:27:21,219 INFO L87 Difference]: Start difference. First operand 1065 states and 1223 transitions. Second operand 16 states. [2020-08-18 10:27:22,686 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 10:27:22,973 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:23,255 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:23,509 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:23,765 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:24,345 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:24,894 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 10:27:25,397 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 10:27:26,038 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:27,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:27:27,812 INFO L93 Difference]: Finished difference Result 2947 states and 3535 transitions. [2020-08-18 10:27:27,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-18 10:27:27,814 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 241 [2020-08-18 10:27:27,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:27:27,825 INFO L225 Difference]: With dead ends: 2947 [2020-08-18 10:27:27,826 INFO L226 Difference]: Without dead ends: 1803 [2020-08-18 10:27:27,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=449, Invalid=1807, Unknown=0, NotChecked=0, Total=2256 [2020-08-18 10:27:27,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2020-08-18 10:27:28,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1431. [2020-08-18 10:27:28,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1431 states. [2020-08-18 10:27:28,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1658 transitions. [2020-08-18 10:27:28,029 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1658 transitions. Word has length 241 [2020-08-18 10:27:28,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:27:28,030 INFO L479 AbstractCegarLoop]: Abstraction has 1431 states and 1658 transitions. [2020-08-18 10:27:28,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 10:27:28,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1658 transitions. [2020-08-18 10:27:28,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-08-18 10:27:28,039 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:27:28,039 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:27:28,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 10:27:28,040 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:27:28,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:27:28,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1853664495, now seen corresponding path program 1 times [2020-08-18 10:27:28,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:27:28,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996933189] [2020-08-18 10:27:28,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:27:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,386 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:27:28,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:27:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:27:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:27:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:27:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:27:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:27:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:27:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:27:28,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:27:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 10:27:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 10:27:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:27:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 10:27:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 10:27:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:27:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 10:27:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 10:27:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-18 10:27:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:28,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-18 10:27:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:27:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-08-18 10:27:28,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:27:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:27:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:27:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 10:27:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-18 10:27:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:27:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 85 proven. 31 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-18 10:27:28,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996933189] [2020-08-18 10:27:28,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 10:27:28,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 10:27:28,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402189258] [2020-08-18 10:27:28,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 10:27:28,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:27:28,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 10:27:28,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-18 10:27:28,762 INFO L87 Difference]: Start difference. First operand 1431 states and 1658 transitions. Second operand 17 states. [2020-08-18 10:27:29,615 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:30,080 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:30,459 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:30,733 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 10:27:31,367 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:32,260 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 10:27:32,618 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:32,863 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 10:27:33,453 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191