/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:55:54,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:55:54,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:55:54,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:55:54,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:55:54,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:55:54,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:55:54,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:55:54,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:55:54,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:55:54,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:55:54,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:55:54,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:55:54,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:55:54,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:55:54,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:55:54,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:55:54,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:55:54,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:55:54,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:55:54,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:55:54,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:55:54,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:55:54,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:55:54,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:55:54,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:55:54,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:55:54,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:55:54,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:55:54,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:55:54,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:55:54,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:55:54,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:55:54,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:55:54,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:55:54,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:55:54,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:55:54,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:55:54,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:55:54,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:55:54,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:55:54,781 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 13:55:54,815 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:55:54,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:55:54,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:55:54,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:55:54,817 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:55:54,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:55:54,818 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:55:54,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:55:54,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:55:54,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:55:54,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:55:54,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:55:54,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:55:54,819 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:55:54,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:55:54,819 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:55:54,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:55:54,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:55:54,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:55:54,820 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:55:54,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:55:54,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:55:54,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:55:54,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:55:54,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:55:54,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:55:54,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:55:54,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:55:54,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:55:54,822 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> log-additional-information=true; [2020-08-21 13:55:55,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:55:55,156 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:55:55,161 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:55:55,163 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:55:55,163 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:55:55,165 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2020-08-21 13:55:55,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7166fb28e/26416becc40e49d583b4e86c38b036e3/FLAG2e1a113af [2020-08-21 13:55:55,779 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:55:55,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product50.cil.c [2020-08-21 13:55:55,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7166fb28e/26416becc40e49d583b4e86c38b036e3/FLAG2e1a113af [2020-08-21 13:55:56,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7166fb28e/26416becc40e49d583b4e86c38b036e3 [2020-08-21 13:55:56,087 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:55:56,088 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:55:56,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:55:56,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:55:56,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:55:56,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:55:56" (1/1) ... [2020-08-21 13:55:56,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465728a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:55:56, skipping insertion in model container [2020-08-21 13:55:56,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:55:56" (1/1) ... [2020-08-21 13:55:56,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:55:56,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:55:56,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:55:56,603 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:55:56,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:55:56,739 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:55:56,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:55:56 WrapperNode [2020-08-21 13:55:56,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:55:56,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:55:56,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:55:56,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:55:56,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:55:56" (1/1) ... [2020-08-21 13:55:56,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:55:56" (1/1) ... [2020-08-21 13:55:56,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:55:56" (1/1) ... [2020-08-21 13:55:56,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:55:56" (1/1) ... [2020-08-21 13:55:56,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:55:56" (1/1) ... [2020-08-21 13:55:56,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:55:56" (1/1) ... [2020-08-21 13:55:56,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:55:56" (1/1) ... [2020-08-21 13:55:56,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:55:56,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:55:56,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:55:56,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:55:56,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:55:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:55:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:55:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:55:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:55:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:55:56,926 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:55:56,927 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:55:56,927 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:55:56,927 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:55:56,927 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:55:56,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:55:56,927 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:55:56,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:55:56,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 13:55:56,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 13:55:56,928 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:55:56,928 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:55:56,928 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:55:56,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:55:56,929 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:55:56,929 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:55:56,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:55:56,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 13:55:56,929 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:55:56,930 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:55:56,930 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:55:56,930 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:55:56,930 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:55:56,930 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:55:56,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:55:56,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:55:56,931 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:55:56,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:55:56,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 13:55:56,931 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 13:55:56,931 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:55:56,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:55:56,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:55:56,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:55:56,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:55:56,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:55:56,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:55:56,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:55:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:55:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:55:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:55:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:55:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:55:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:55:56,933 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:55:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:55:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:55:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:55:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:55:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:55:56,934 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:55:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:55:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 13:55:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:55:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:55:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:55:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:55:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:55:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:55:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 13:55:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:55:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:55:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:55:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:55:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 13:55:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:55:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:55:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:55:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 13:55:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:55:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:55:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:55:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:55:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 13:55:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:55:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:55:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:55:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:55:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:55:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:55:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:55:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:55:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:55:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:55:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:55:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:55:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:55:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:55:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:55:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:55:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:55:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:55:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:55:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:55:58,234 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:55:58,234 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:55:58,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:55:58 BoogieIcfgContainer [2020-08-21 13:55:58,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:55:58,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:55:58,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:55:58,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:55:58,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:55:56" (1/3) ... [2020-08-21 13:55:58,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3269c547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:55:58, skipping insertion in model container [2020-08-21 13:55:58,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:55:56" (2/3) ... [2020-08-21 13:55:58,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3269c547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:55:58, skipping insertion in model container [2020-08-21 13:55:58,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:55:58" (3/3) ... [2020-08-21 13:55:58,248 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product50.cil.c [2020-08-21 13:55:58,259 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:55:58,267 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:55:58,281 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:55:58,307 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:55:58,307 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:55:58,307 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:55:58,307 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:55:58,308 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:55:58,308 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:55:58,308 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:55:58,308 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:55:58,331 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-08-21 13:55:58,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 13:55:58,342 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:55:58,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:55:58,343 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:55:58,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:55:58,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1742083297, now seen corresponding path program 1 times [2020-08-21 13:55:58,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:55:58,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320407908] [2020-08-21 13:55:58,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:55:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:55:59,059 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:55:59,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:55:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:55:59,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:55:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:55:59,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:55:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:55:59,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:55:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:55:59,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:55:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:55:59,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:55:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:55:59,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:55:59,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:55:59,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 13:55:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:55:59,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:55:59,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320407908] [2020-08-21 13:55:59,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:55:59,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:55:59,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62344558] [2020-08-21 13:55:59,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:55:59,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:55:59,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:55:59,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:55:59,210 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 4 states. [2020-08-21 13:56:00,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:00,394 INFO L93 Difference]: Finished difference Result 306 states and 397 transitions. [2020-08-21 13:56:00,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 13:56:00,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 13:56:00,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:00,411 INFO L225 Difference]: With dead ends: 306 [2020-08-21 13:56:00,411 INFO L226 Difference]: Without dead ends: 170 [2020-08-21 13:56:00,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:56:00,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-21 13:56:00,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 137. [2020-08-21 13:56:00,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-21 13:56:00,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2020-08-21 13:56:00,512 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 51 [2020-08-21 13:56:00,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:00,512 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2020-08-21 13:56:00,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:56:00,513 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2020-08-21 13:56:00,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 13:56:00,517 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:00,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:56:00,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:56:00,518 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:00,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:00,518 INFO L82 PathProgramCache]: Analyzing trace with hash 604742129, now seen corresponding path program 1 times [2020-08-21 13:56:00,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:00,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151947439] [2020-08-21 13:56:00,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:00,879 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:00,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:00,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:00,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:00,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:00,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:00,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:00,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:56:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:00,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:56:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:56:00,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151947439] [2020-08-21 13:56:00,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:56:00,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 13:56:00,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352677264] [2020-08-21 13:56:00,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 13:56:00,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:00,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 13:56:00,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:56:00,941 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 5 states. [2020-08-21 13:56:01,435 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:02,363 INFO L93 Difference]: Finished difference Result 247 states and 304 transitions. [2020-08-21 13:56:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 13:56:02,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 13:56:02,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:02,367 INFO L225 Difference]: With dead ends: 247 [2020-08-21 13:56:02,367 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 13:56:02,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:56:02,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 13:56:02,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-21 13:56:02,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-21 13:56:02,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2020-08-21 13:56:02,408 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 52 [2020-08-21 13:56:02,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:02,409 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2020-08-21 13:56:02,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 13:56:02,409 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2020-08-21 13:56:02,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 13:56:02,411 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:02,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:56:02,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:56:02,412 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:02,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:02,412 INFO L82 PathProgramCache]: Analyzing trace with hash -185652476, now seen corresponding path program 1 times [2020-08-21 13:56:02,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:02,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837072397] [2020-08-21 13:56:02,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:02,777 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:02,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:02,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:02,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:02,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:02,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:02,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:02,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 13:56:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:02,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 13:56:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:02,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:56:02,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837072397] [2020-08-21 13:56:02,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:56:02,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:56:02,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943208056] [2020-08-21 13:56:02,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:56:02,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:02,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:56:02,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:56:02,883 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 9 states. [2020-08-21 13:56:03,290 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:03,605 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:03,902 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:04,146 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:05,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:05,328 INFO L93 Difference]: Finished difference Result 260 states and 323 transitions. [2020-08-21 13:56:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 13:56:05,331 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-21 13:56:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:05,334 INFO L225 Difference]: With dead ends: 260 [2020-08-21 13:56:05,334 INFO L226 Difference]: Without dead ends: 160 [2020-08-21 13:56:05,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:56:05,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-21 13:56:05,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-21 13:56:05,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-21 13:56:05,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2020-08-21 13:56:05,373 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 57 [2020-08-21 13:56:05,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:05,373 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2020-08-21 13:56:05,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:56:05,374 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2020-08-21 13:56:05,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 13:56:05,376 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:05,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:56:05,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:56:05,377 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:05,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:05,377 INFO L82 PathProgramCache]: Analyzing trace with hash -285076691, now seen corresponding path program 1 times [2020-08-21 13:56:05,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:05,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097618965] [2020-08-21 13:56:05,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:05,658 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:05,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:05,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:05,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:05,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:05,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:05,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:05,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:56:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:05,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:05,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:05,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 13:56:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:05,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 13:56:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:56:05,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097618965] [2020-08-21 13:56:05,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:56:05,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 13:56:05,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912561242] [2020-08-21 13:56:05,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 13:56:05,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:05,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 13:56:05,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:56:05,784 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 7 states. [2020-08-21 13:56:06,206 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:07,412 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:08,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:08,113 INFO L93 Difference]: Finished difference Result 359 states and 451 transitions. [2020-08-21 13:56:08,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 13:56:08,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-08-21 13:56:08,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:08,118 INFO L225 Difference]: With dead ends: 359 [2020-08-21 13:56:08,118 INFO L226 Difference]: Without dead ends: 259 [2020-08-21 13:56:08,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 13:56:08,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-21 13:56:08,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 210. [2020-08-21 13:56:08,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-08-21 13:56:08,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 240 transitions. [2020-08-21 13:56:08,171 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 240 transitions. Word has length 70 [2020-08-21 13:56:08,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:08,171 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 240 transitions. [2020-08-21 13:56:08,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 13:56:08,171 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 240 transitions. [2020-08-21 13:56:08,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-21 13:56:08,173 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:08,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:56:08,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:56:08,174 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:08,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:08,174 INFO L82 PathProgramCache]: Analyzing trace with hash -791027315, now seen corresponding path program 1 times [2020-08-21 13:56:08,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:08,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631905533] [2020-08-21 13:56:08,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:08,451 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:08,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:08,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:08,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:08,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:08,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:08,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:08,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:56:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:08,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:08,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:08,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:08,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:08,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 13:56:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:08,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 13:56:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:56:08,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631905533] [2020-08-21 13:56:08,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:56:08,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:56:08,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135450712] [2020-08-21 13:56:08,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:56:08,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:08,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:56:08,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:56:08,608 INFO L87 Difference]: Start difference. First operand 210 states and 240 transitions. Second operand 9 states. [2020-08-21 13:56:09,045 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:10,234 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:10,514 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:10,757 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:10,968 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:12,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:12,219 INFO L93 Difference]: Finished difference Result 626 states and 786 transitions. [2020-08-21 13:56:12,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 13:56:12,220 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-21 13:56:12,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:12,224 INFO L225 Difference]: With dead ends: 626 [2020-08-21 13:56:12,224 INFO L226 Difference]: Without dead ends: 444 [2020-08-21 13:56:12,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 13:56:12,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-08-21 13:56:12,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 368. [2020-08-21 13:56:12,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-08-21 13:56:12,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 420 transitions. [2020-08-21 13:56:12,314 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 420 transitions. Word has length 84 [2020-08-21 13:56:12,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:12,315 INFO L479 AbstractCegarLoop]: Abstraction has 368 states and 420 transitions. [2020-08-21 13:56:12,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:56:12,315 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 420 transitions. [2020-08-21 13:56:12,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 13:56:12,316 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:12,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:56:12,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:56:12,317 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:12,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:12,318 INFO L82 PathProgramCache]: Analyzing trace with hash 474237417, now seen corresponding path program 1 times [2020-08-21 13:56:12,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:12,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754531277] [2020-08-21 13:56:12,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:12,619 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:12,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:12,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:12,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:12,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:12,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:12,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:12,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:56:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:12,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:56:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:12,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:12,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:12,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:12,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:12,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 13:56:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:12,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 13:56:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:56:12,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754531277] [2020-08-21 13:56:12,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:56:12,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 13:56:12,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095802554] [2020-08-21 13:56:12,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:56:12,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:12,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:56:12,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:56:12,736 INFO L87 Difference]: Start difference. First operand 368 states and 420 transitions. Second operand 10 states. [2020-08-21 13:56:13,149 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:14,308 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:14,543 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:14,779 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:15,039 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:15,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:15,984 INFO L93 Difference]: Finished difference Result 822 states and 1015 transitions. [2020-08-21 13:56:15,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 13:56:15,985 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-21 13:56:15,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:15,989 INFO L225 Difference]: With dead ends: 822 [2020-08-21 13:56:15,989 INFO L226 Difference]: Without dead ends: 482 [2020-08-21 13:56:15,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-21 13:56:15,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-08-21 13:56:16,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 367. [2020-08-21 13:56:16,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-08-21 13:56:16,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2020-08-21 13:56:16,072 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 88 [2020-08-21 13:56:16,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:16,073 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2020-08-21 13:56:16,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:56:16,073 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2020-08-21 13:56:16,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 13:56:16,074 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:16,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:56:16,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:56:16,075 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:16,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:16,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1710786942, now seen corresponding path program 1 times [2020-08-21 13:56:16,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:16,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572901316] [2020-08-21 13:56:16,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:16,323 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:16,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:16,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:16,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:16,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:16,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:16,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:16,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:56:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:16,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:56:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:16,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:16,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:16,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:16,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:16,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 13:56:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:16,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 13:56:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:56:16,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572901316] [2020-08-21 13:56:16,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:56:16,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 13:56:16,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827075361] [2020-08-21 13:56:16,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:56:16,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:16,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:56:16,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:56:16,469 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand 10 states. [2020-08-21 13:56:17,541 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:17,801 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 13:56:18,055 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:18,305 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:19,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:19,444 INFO L93 Difference]: Finished difference Result 825 states and 1024 transitions. [2020-08-21 13:56:19,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 13:56:19,445 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-21 13:56:19,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:19,448 INFO L225 Difference]: With dead ends: 825 [2020-08-21 13:56:19,449 INFO L226 Difference]: Without dead ends: 486 [2020-08-21 13:56:19,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:56:19,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-08-21 13:56:19,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 377. [2020-08-21 13:56:19,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-08-21 13:56:19,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 427 transitions. [2020-08-21 13:56:19,527 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 427 transitions. Word has length 89 [2020-08-21 13:56:19,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:19,528 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 427 transitions. [2020-08-21 13:56:19,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:56:19,528 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 427 transitions. [2020-08-21 13:56:19,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 13:56:19,530 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:19,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:56:19,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:56:19,530 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:19,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:19,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1009187068, now seen corresponding path program 1 times [2020-08-21 13:56:19,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:19,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641581512] [2020-08-21 13:56:19,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,838 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:19,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:56:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:56:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 13:56:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:19,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 13:56:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:20,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:56:20,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641581512] [2020-08-21 13:56:20,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:56:20,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:56:20,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304223550] [2020-08-21 13:56:20,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:56:20,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:20,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:56:20,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:56:20,013 INFO L87 Difference]: Start difference. First operand 377 states and 427 transitions. Second operand 12 states. [2020-08-21 13:56:20,926 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:21,282 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:21,623 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:22,393 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:22,666 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:22,915 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:24,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:24,199 INFO L93 Difference]: Finished difference Result 849 states and 1066 transitions. [2020-08-21 13:56:24,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 13:56:24,200 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 89 [2020-08-21 13:56:24,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:24,207 INFO L225 Difference]: With dead ends: 849 [2020-08-21 13:56:24,208 INFO L226 Difference]: Without dead ends: 500 [2020-08-21 13:56:24,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 13:56:24,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-08-21 13:56:24,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 385. [2020-08-21 13:56:24,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-21 13:56:24,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 435 transitions. [2020-08-21 13:56:24,284 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 435 transitions. Word has length 89 [2020-08-21 13:56:24,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:24,285 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 435 transitions. [2020-08-21 13:56:24,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:56:24,285 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 435 transitions. [2020-08-21 13:56:24,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-21 13:56:24,287 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:24,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:56:24,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:56:24,287 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:24,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:24,288 INFO L82 PathProgramCache]: Analyzing trace with hash 716293829, now seen corresponding path program 1 times [2020-08-21 13:56:24,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:24,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798870740] [2020-08-21 13:56:24,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,556 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:24,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:56:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:56:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 13:56:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 13:56:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:56:24,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798870740] [2020-08-21 13:56:24,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:56:24,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:56:24,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198495886] [2020-08-21 13:56:24,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:56:24,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:24,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:56:24,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:56:24,715 INFO L87 Difference]: Start difference. First operand 385 states and 435 transitions. Second operand 8 states. [2020-08-21 13:56:25,298 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:25,998 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:28,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:28,599 INFO L93 Difference]: Finished difference Result 1197 states and 1553 transitions. [2020-08-21 13:56:28,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 13:56:28,600 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-08-21 13:56:28,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:28,605 INFO L225 Difference]: With dead ends: 1197 [2020-08-21 13:56:28,606 INFO L226 Difference]: Without dead ends: 840 [2020-08-21 13:56:28,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-21 13:56:28,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2020-08-21 13:56:28,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 695. [2020-08-21 13:56:28,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-08-21 13:56:28,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 813 transitions. [2020-08-21 13:56:28,751 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 813 transitions. Word has length 89 [2020-08-21 13:56:28,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:28,752 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 813 transitions. [2020-08-21 13:56:28,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:56:28,753 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 813 transitions. [2020-08-21 13:56:28,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 13:56:28,757 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:28,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:56:28,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:56:28,758 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:28,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:28,758 INFO L82 PathProgramCache]: Analyzing trace with hash -7624597, now seen corresponding path program 1 times [2020-08-21 13:56:28,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:28,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704062436] [2020-08-21 13:56:28,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,045 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:29,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:56:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:56:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 13:56:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 13:56:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 13:56:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:56:29,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704062436] [2020-08-21 13:56:29,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:56:29,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:56:29,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044138472] [2020-08-21 13:56:29,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:56:29,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:29,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:56:29,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:56:29,166 INFO L87 Difference]: Start difference. First operand 695 states and 813 transitions. Second operand 8 states. [2020-08-21 13:56:29,640 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:32,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:32,365 INFO L93 Difference]: Finished difference Result 1377 states and 1783 transitions. [2020-08-21 13:56:32,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 13:56:32,366 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-21 13:56:32,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:32,375 INFO L225 Difference]: With dead ends: 1377 [2020-08-21 13:56:32,375 INFO L226 Difference]: Without dead ends: 1374 [2020-08-21 13:56:32,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-21 13:56:32,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2020-08-21 13:56:32,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1147. [2020-08-21 13:56:32,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-08-21 13:56:32,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1356 transitions. [2020-08-21 13:56:32,641 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1356 transitions. Word has length 93 [2020-08-21 13:56:32,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:32,642 INFO L479 AbstractCegarLoop]: Abstraction has 1147 states and 1356 transitions. [2020-08-21 13:56:32,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:56:32,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1356 transitions. [2020-08-21 13:56:32,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-21 13:56:32,647 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:32,648 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 13:56:32,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 13:56:32,649 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:32,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:32,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1116069495, now seen corresponding path program 1 times [2020-08-21 13:56:32,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:32,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231722598] [2020-08-21 13:56:32,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,935 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:32,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:32,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:56:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:56:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:56:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:56:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:56:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 13:56:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-21 13:56:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 13:56:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-21 13:56:33,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231722598] [2020-08-21 13:56:33,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:56:33,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 13:56:33,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839227313] [2020-08-21 13:56:33,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 13:56:33,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:33,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 13:56:33,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:56:33,173 INFO L87 Difference]: Start difference. First operand 1147 states and 1356 transitions. Second operand 13 states. [2020-08-21 13:56:33,896 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:34,131 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:34,356 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:35,352 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:37,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:37,333 INFO L93 Difference]: Finished difference Result 2071 states and 2568 transitions. [2020-08-21 13:56:37,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-21 13:56:37,338 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 152 [2020-08-21 13:56:37,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:37,347 INFO L225 Difference]: With dead ends: 2071 [2020-08-21 13:56:37,347 INFO L226 Difference]: Without dead ends: 1084 [2020-08-21 13:56:37,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-21 13:56:37,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2020-08-21 13:56:37,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 948. [2020-08-21 13:56:37,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-08-21 13:56:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1106 transitions. [2020-08-21 13:56:37,543 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1106 transitions. Word has length 152 [2020-08-21 13:56:37,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:37,543 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1106 transitions. [2020-08-21 13:56:37,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 13:56:37,543 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1106 transitions. [2020-08-21 13:56:37,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 13:56:37,547 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:37,547 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:56:37,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 13:56:37,548 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:37,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:37,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1764550393, now seen corresponding path program 1 times [2020-08-21 13:56:37,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:37,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214769234] [2020-08-21 13:56:37,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,889 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:37,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:56:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:37,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:56:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:38,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:56:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:38,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:38,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:38,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:38,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:38,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:38,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:56:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:38,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:38,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:56:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:38,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 13:56:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:38,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 13:56:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:38,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:38,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:38,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:56:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:38,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:38,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 13:56:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:38,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 13:56:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:38,245 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-21 13:56:38,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214769234] [2020-08-21 13:56:38,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:56:38,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 13:56:38,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146642305] [2020-08-21 13:56:38,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 13:56:38,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:38,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 13:56:38,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:56:38,248 INFO L87 Difference]: Start difference. First operand 948 states and 1106 transitions. Second operand 15 states. [2020-08-21 13:56:38,764 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:39,888 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:42,114 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2020-08-21 13:56:42,624 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-21 13:56:43,098 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-21 13:56:44,103 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 13:56:44,388 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:56:44,651 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:56:44,912 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:56:46,723 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 192 [2020-08-21 13:56:47,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:47,786 INFO L93 Difference]: Finished difference Result 3031 states and 3876 transitions. [2020-08-21 13:56:47,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-08-21 13:56:47,786 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 154 [2020-08-21 13:56:47,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:47,799 INFO L225 Difference]: With dead ends: 3031 [2020-08-21 13:56:47,799 INFO L226 Difference]: Without dead ends: 2243 [2020-08-21 13:56:47,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=889, Invalid=3401, Unknown=0, NotChecked=0, Total=4290 [2020-08-21 13:56:47,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2020-08-21 13:56:48,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 1920. [2020-08-21 13:56:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-08-21 13:56:48,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2261 transitions. [2020-08-21 13:56:48,248 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2261 transitions. Word has length 154 [2020-08-21 13:56:48,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:48,249 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 2261 transitions. [2020-08-21 13:56:48,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 13:56:48,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2261 transitions. [2020-08-21 13:56:48,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 13:56:48,254 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:56:48,255 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:56:48,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 13:56:48,255 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:56:48,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:56:48,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1836936951, now seen corresponding path program 1 times [2020-08-21 13:56:48,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:56:48,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818943173] [2020-08-21 13:56:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:56:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,584 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:56:48,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:56:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:56:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:56:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:56:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:56:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:56:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:56:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:56:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:56:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:56:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 13:56:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:56:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 13:56:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 13:56:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:56:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:56:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:56:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 13:56:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 13:56:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:56:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-21 13:56:48,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818943173] [2020-08-21 13:56:48,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:56:48,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 13:56:48,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066991661] [2020-08-21 13:56:48,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 13:56:48,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:56:48,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 13:56:48,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:56:48,887 INFO L87 Difference]: Start difference. First operand 1920 states and 2261 transitions. Second operand 15 states. [2020-08-21 13:56:49,572 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:49,827 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:50,057 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:51,888 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:56:52,143 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:56:52,392 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:52,623 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:56:53,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:56:53,089 INFO L93 Difference]: Finished difference Result 2728 states and 3289 transitions. [2020-08-21 13:56:53,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-21 13:56:53,090 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 154 [2020-08-21 13:56:53,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:56:53,091 INFO L225 Difference]: With dead ends: 2728 [2020-08-21 13:56:53,091 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 13:56:53,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=242, Invalid=750, Unknown=0, NotChecked=0, Total=992 [2020-08-21 13:56:53,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 13:56:53,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 13:56:53,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 13:56:53,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 13:56:53,099 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2020-08-21 13:56:53,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:56:53,100 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 13:56:53,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 13:56:53,100 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 13:56:53,100 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 13:56:53,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 13:56:53,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.