/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:47:46,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:47:46,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:47:46,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:47:46,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:47:46,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:47:46,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:47:46,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:47:46,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:47:46,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:47:46,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:47:46,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:47:46,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:47:46,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:47:46,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:47:46,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:47:46,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:47:46,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:47:46,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:47:46,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:47:46,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:47:46,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:47:46,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:47:46,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:47:46,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:47:46,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:47:46,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:47:46,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:47:46,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:47:46,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:47:46,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:47:46,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:47:46,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:47:46,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:47:46,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:47:46,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:47:46,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:47:46,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:47:46,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:47:46,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:47:46,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:47:46,811 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 22:47:46,855 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:47:46,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:47:46,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:47:46,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:47:46,856 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:47:46,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:47:46,857 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:47:46,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:47:46,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:47:46,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:47:46,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:47:46,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:47:46,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:47:46,858 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:47:46,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:47:46,859 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:47:46,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:47:46,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:47:46,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:47:46,859 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:47:46,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:47:46,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:47:46,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:47:46,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:47:46,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:47:46,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:47:46,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:47:46,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:47:46,861 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:47:46,861 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 22:47:47,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:47:47,151 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:47:47,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:47:47,156 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:47:47,157 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:47:47,157 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2020-08-21 22:47:47,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14826e9e2/48dfd020543542349527992f7291f85e/FLAG1417981bb [2020-08-21 22:47:47,802 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:47:47,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product53.cil.c [2020-08-21 22:47:47,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14826e9e2/48dfd020543542349527992f7291f85e/FLAG1417981bb [2020-08-21 22:47:48,077 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14826e9e2/48dfd020543542349527992f7291f85e [2020-08-21 22:47:48,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:47:48,086 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:47:48,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:47:48,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:47:48,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:47:48,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:47:48" (1/1) ... [2020-08-21 22:47:48,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14924135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:48, skipping insertion in model container [2020-08-21 22:47:48,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:47:48" (1/1) ... [2020-08-21 22:47:48,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:47:48,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:47:48,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:47:48,630 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:47:48,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:47:48,761 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:47:48,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:48 WrapperNode [2020-08-21 22:47:48,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:47:48,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:47:48,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:47:48,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:47:48,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:48" (1/1) ... [2020-08-21 22:47:48,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:48" (1/1) ... [2020-08-21 22:47:48,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:48" (1/1) ... [2020-08-21 22:47:48,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:48" (1/1) ... [2020-08-21 22:47:48,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:48" (1/1) ... [2020-08-21 22:47:48,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:48" (1/1) ... [2020-08-21 22:47:48,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:48" (1/1) ... [2020-08-21 22:47:48,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:47:48,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:47:48,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:47:48,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:47:48,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:48" (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 22:47:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:47:48,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:47:48,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:47:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:47:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:47:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:47:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:47:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:47:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:47:48,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:47:48,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:47:48,935 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:47:48,935 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:47:48,935 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 22:47:48,935 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 22:47:48,936 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:47:48,936 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:47:48,937 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:47:48,937 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:47:48,937 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:47:48,938 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:47:48,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:47:48,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 22:47:48,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-21 22:47:48,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-21 22:47:48,941 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:47:48,941 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:47:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:47:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:47:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:47:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:47:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:47:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:47:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:47:48,943 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:47:48,943 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:47:48,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:47:48,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 22:47:48,943 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:47:48,944 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:47:48,944 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:47:48,944 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:47:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:47:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:47:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:47:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:47:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:47:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:47:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:47:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:47:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:47:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:47:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:47:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:47:48,947 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:47:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:47:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:47:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:47:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:47:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:47:48,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:47:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:47:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:47:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:47:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:47:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:47:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:47:48,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:47:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:47:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:47:48,950 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:47:48,951 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:47:48,952 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 22:47:48,952 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:47:48,952 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:47:48,953 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:47:48,953 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:47:48,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-21 22:47:48,954 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:47:48,954 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:47:48,954 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:47:48,954 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 22:47:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 22:47:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 22:47:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:47:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-21 22:47:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:47:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:47:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:47:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:47:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:47:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:47:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:47:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:47:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:47:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:47:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:47:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:47:52,074 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:47:52,074 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:47:52,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:47:52 BoogieIcfgContainer [2020-08-21 22:47:52,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:47:52,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:47:52,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:47:52,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:47:52,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:47:48" (1/3) ... [2020-08-21 22:47:52,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f71e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:47:52, skipping insertion in model container [2020-08-21 22:47:52,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:47:48" (2/3) ... [2020-08-21 22:47:52,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20f71e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:47:52, skipping insertion in model container [2020-08-21 22:47:52,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:47:52" (3/3) ... [2020-08-21 22:47:52,088 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product53.cil.c [2020-08-21 22:47:52,098 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:47:52,106 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:47:52,121 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:47:52,146 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:47:52,147 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:47:52,147 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:47:52,147 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:47:52,148 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:47:52,148 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:47:52,148 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:47:52,148 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:47:52,172 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-08-21 22:47:52,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 22:47:52,182 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:47:52,184 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 22:47:52,184 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:47:52,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:47:52,191 INFO L82 PathProgramCache]: Analyzing trace with hash 805370938, now seen corresponding path program 1 times [2020-08-21 22:47:52,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:47:52,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081662748] [2020-08-21 22:47:52,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:47:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:52,889 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:47:52,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:47:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:52,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:47:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:52,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:47:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:52,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:47:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:52,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:47:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:52,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:47:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:52,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 22:47:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:52,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 22:47:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:52,987 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 22:47:52,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081662748] [2020-08-21 22:47:52,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:47:52,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:47:52,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533608168] [2020-08-21 22:47:52,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:47:53,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:47:53,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:47:53,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:47:53,017 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 4 states. [2020-08-21 22:47:54,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:47:54,273 INFO L93 Difference]: Finished difference Result 328 states and 428 transitions. [2020-08-21 22:47:54,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:47:54,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-21 22:47:54,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:47:54,291 INFO L225 Difference]: With dead ends: 328 [2020-08-21 22:47:54,291 INFO L226 Difference]: Without dead ends: 181 [2020-08-21 22:47:54,295 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 22:47:54,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-21 22:47:54,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 148. [2020-08-21 22:47:54,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-21 22:47:54,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 176 transitions. [2020-08-21 22:47:54,422 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 176 transitions. Word has length 51 [2020-08-21 22:47:54,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:47:54,422 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 176 transitions. [2020-08-21 22:47:54,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:47:54,423 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 176 transitions. [2020-08-21 22:47:54,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 22:47:54,427 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:47:54,427 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 22:47:54,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:47:54,428 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:47:54,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:47:54,428 INFO L82 PathProgramCache]: Analyzing trace with hash -239223915, now seen corresponding path program 1 times [2020-08-21 22:47:54,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:47:54,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104457129] [2020-08-21 22:47:54,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:47:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:54,765 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:47:54,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:47:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:54,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:47:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:54,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:47:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:54,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:47:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:54,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:47:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:54,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:47:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:54,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:47:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:54,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:47:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:54,819 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 22:47:54,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104457129] [2020-08-21 22:47:54,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:47:54,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:47:54,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669668903] [2020-08-21 22:47:54,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:47:54,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:47:54,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:47:54,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:47:54,823 INFO L87 Difference]: Start difference. First operand 148 states and 176 transitions. Second operand 5 states. [2020-08-21 22:47:55,341 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:47:56,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:47:56,347 INFO L93 Difference]: Finished difference Result 273 states and 339 transitions. [2020-08-21 22:47:56,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 22:47:56,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-21 22:47:56,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:47:56,351 INFO L225 Difference]: With dead ends: 273 [2020-08-21 22:47:56,351 INFO L226 Difference]: Without dead ends: 171 [2020-08-21 22:47:56,353 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 22:47:56,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-21 22:47:56,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-08-21 22:47:56,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-21 22:47:56,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-21 22:47:56,397 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 52 [2020-08-21 22:47:56,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:47:56,397 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-21 22:47:56,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:47:56,397 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-21 22:47:56,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-21 22:47:56,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:47:56,400 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] [2020-08-21 22:47:56,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:47:56,401 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:47:56,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:47:56,401 INFO L82 PathProgramCache]: Analyzing trace with hash -2031785454, now seen corresponding path program 1 times [2020-08-21 22:47:56,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:47:56,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307773594] [2020-08-21 22:47:56,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:47:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:56,740 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:47:56,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:47:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:56,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:47:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:56,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:47:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:56,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:47:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:56,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:47:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:56,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:47:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:56,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 22:47:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:56,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:47:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:56,880 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 22:47:56,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307773594] [2020-08-21 22:47:56,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:47:56,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:47:56,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768852104] [2020-08-21 22:47:56,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:47:56,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:47:56,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:47:56,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:47:56,885 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 9 states. [2020-08-21 22:47:57,342 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:47:57,667 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:57,902 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:58,157 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:47:59,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:47:59,483 INFO L93 Difference]: Finished difference Result 282 states and 354 transitions. [2020-08-21 22:47:59,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 22:47:59,484 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-21 22:47:59,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:47:59,487 INFO L225 Difference]: With dead ends: 282 [2020-08-21 22:47:59,487 INFO L226 Difference]: Without dead ends: 171 [2020-08-21 22:47:59,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:47:59,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-21 22:47:59,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-08-21 22:47:59,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-21 22:47:59,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 163 transitions. [2020-08-21 22:47:59,531 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 163 transitions. Word has length 56 [2020-08-21 22:47:59,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:47:59,531 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 163 transitions. [2020-08-21 22:47:59,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:47:59,531 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 163 transitions. [2020-08-21 22:47:59,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-21 22:47:59,534 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:47:59,534 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] [2020-08-21 22:47:59,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:47:59,535 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:47:59,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:47:59,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1519881096, now seen corresponding path program 1 times [2020-08-21 22:47:59,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:47:59,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993408945] [2020-08-21 22:47:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:47:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:59,851 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:47:59,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:47:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:59,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:47:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:59,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:47:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:59,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:47:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:59,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:47:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:59,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:47:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:59,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:47:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:59,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:47:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:59,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:47:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:59,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:47:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:59,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-21 22:47:59,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:47:59,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 22:48:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:00,011 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 22:48:00,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993408945] [2020-08-21 22:48:00,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:00,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 22:48:00,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92983785] [2020-08-21 22:48:00,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 22:48:00,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:00,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 22:48:00,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 22:48:00,014 INFO L87 Difference]: Start difference. First operand 139 states and 163 transitions. Second operand 7 states. [2020-08-21 22:48:00,427 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:48:01,716 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:48:02,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:02,486 INFO L93 Difference]: Finished difference Result 382 states and 483 transitions. [2020-08-21 22:48:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 22:48:02,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-08-21 22:48:02,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:02,493 INFO L225 Difference]: With dead ends: 382 [2020-08-21 22:48:02,493 INFO L226 Difference]: Without dead ends: 271 [2020-08-21 22:48:02,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 22:48:02,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-08-21 22:48:02,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 225. [2020-08-21 22:48:02,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-08-21 22:48:02,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 258 transitions. [2020-08-21 22:48:02,555 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 258 transitions. Word has length 74 [2020-08-21 22:48:02,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:02,555 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 258 transitions. [2020-08-21 22:48:02,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 22:48:02,556 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 258 transitions. [2020-08-21 22:48:02,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 22:48:02,558 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:02,558 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 22:48:02,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:48:02,558 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:02,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:02,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1815815577, now seen corresponding path program 1 times [2020-08-21 22:48:02,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:02,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188640908] [2020-08-21 22:48:02,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:02,847 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:48:02,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:02,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:02,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:48:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:02,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:48:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:02,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:48:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:02,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:48:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:02,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:48:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:02,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:02,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:02,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:02,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:02,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:02,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 22:48:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:02,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 22:48:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:02,956 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 22:48:02,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188640908] [2020-08-21 22:48:02,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:02,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:48:02,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154659234] [2020-08-21 22:48:02,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:48:02,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:02,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:48:02,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:48:02,959 INFO L87 Difference]: Start difference. First operand 225 states and 258 transitions. Second operand 9 states. [2020-08-21 22:48:03,425 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:48:04,674 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:04,930 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:05,164 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:05,383 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:48:06,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:06,751 INFO L93 Difference]: Finished difference Result 666 states and 830 transitions. [2020-08-21 22:48:06,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 22:48:06,753 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-21 22:48:06,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:06,759 INFO L225 Difference]: With dead ends: 666 [2020-08-21 22:48:06,759 INFO L226 Difference]: Without dead ends: 469 [2020-08-21 22:48:06,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-21 22:48:06,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-08-21 22:48:06,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 398. [2020-08-21 22:48:06,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-08-21 22:48:06,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 456 transitions. [2020-08-21 22:48:06,850 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 456 transitions. Word has length 88 [2020-08-21 22:48:06,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:06,851 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 456 transitions. [2020-08-21 22:48:06,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:48:06,851 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 456 transitions. [2020-08-21 22:48:06,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 22:48:06,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:06,853 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] [2020-08-21 22:48:06,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:48:06,854 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:06,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:06,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1743532533, now seen corresponding path program 1 times [2020-08-21 22:48:06,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:06,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846185682] [2020-08-21 22:48:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:07,183 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:48:07,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:07,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:07,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:48:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:07,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:48:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:07,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:48:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:07,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:48:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:07,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:48:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:07,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:48:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:07,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:07,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:07,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:07,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:07,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:07,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-21 22:48:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:07,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-21 22:48:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:07,350 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 22:48:07,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846185682] [2020-08-21 22:48:07,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:07,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 22:48:07,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198305863] [2020-08-21 22:48:07,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 22:48:07,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:07,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 22:48:07,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:48:07,355 INFO L87 Difference]: Start difference. First operand 398 states and 456 transitions. Second operand 10 states. [2020-08-21 22:48:07,949 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:48:09,165 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:09,421 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:48:09,706 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:09,998 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:11,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:11,240 INFO L93 Difference]: Finished difference Result 874 states and 1071 transitions. [2020-08-21 22:48:11,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 22:48:11,241 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-21 22:48:11,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:11,246 INFO L225 Difference]: With dead ends: 874 [2020-08-21 22:48:11,246 INFO L226 Difference]: Without dead ends: 504 [2020-08-21 22:48:11,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-21 22:48:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-08-21 22:48:11,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 397. [2020-08-21 22:48:11,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-08-21 22:48:11,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 453 transitions. [2020-08-21 22:48:11,322 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 453 transitions. Word has length 92 [2020-08-21 22:48:11,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:11,322 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 453 transitions. [2020-08-21 22:48:11,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 22:48:11,323 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 453 transitions. [2020-08-21 22:48:11,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 22:48:11,324 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:11,324 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 22:48:11,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:48:11,325 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:11,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:11,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1672267508, now seen corresponding path program 1 times [2020-08-21 22:48:11,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:11,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505307734] [2020-08-21 22:48:11,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:11,564 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:48:11,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:11,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:11,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:48:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:11,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:48:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:11,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:48:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:11,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:48:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:11,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:48:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:11,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:48:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:11,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:11,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:11,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:11,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:11,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:11,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 22:48:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:11,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 22:48:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:11,721 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 22:48:11,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505307734] [2020-08-21 22:48:11,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:11,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-21 22:48:11,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580216675] [2020-08-21 22:48:11,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 22:48:11,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:11,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 22:48:11,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-21 22:48:11,724 INFO L87 Difference]: Start difference. First operand 397 states and 453 transitions. Second operand 10 states. [2020-08-21 22:48:12,849 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:13,119 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 22:48:13,368 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:48:13,614 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:48:14,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:14,858 INFO L93 Difference]: Finished difference Result 877 states and 1082 transitions. [2020-08-21 22:48:14,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 22:48:14,859 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-21 22:48:14,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:14,862 INFO L225 Difference]: With dead ends: 877 [2020-08-21 22:48:14,862 INFO L226 Difference]: Without dead ends: 508 [2020-08-21 22:48:14,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 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 22:48:14,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-08-21 22:48:14,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 407. [2020-08-21 22:48:14,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-08-21 22:48:14,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 463 transitions. [2020-08-21 22:48:14,940 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 463 transitions. Word has length 93 [2020-08-21 22:48:14,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:14,940 INFO L479 AbstractCegarLoop]: Abstraction has 407 states and 463 transitions. [2020-08-21 22:48:14,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 22:48:14,941 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 463 transitions. [2020-08-21 22:48:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 22:48:14,942 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:14,942 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 22:48:14,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:48:14,943 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:14,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:14,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1599880950, now seen corresponding path program 1 times [2020-08-21 22:48:14,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:14,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833840146] [2020-08-21 22:48:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:15,192 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:48:15,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:15,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:15,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:48:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:15,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:48:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:15,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:48:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:15,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:48:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:15,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:48:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:15,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:48:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:15,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:15,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:15,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:15,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:15,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:15,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 22:48:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:15,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 22:48:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:15,347 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 22:48:15,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833840146] [2020-08-21 22:48:15,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:15,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 22:48:15,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855280363] [2020-08-21 22:48:15,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 22:48:15,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:15,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 22:48:15,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-21 22:48:15,349 INFO L87 Difference]: Start difference. First operand 407 states and 463 transitions. Second operand 12 states. [2020-08-21 22:48:15,958 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:48:16,191 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:48:16,428 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:48:17,089 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:48:17,342 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:48:17,578 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:48:19,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:19,015 INFO L93 Difference]: Finished difference Result 901 states and 1126 transitions. [2020-08-21 22:48:19,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 22:48:19,016 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 93 [2020-08-21 22:48:19,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:19,024 INFO L225 Difference]: With dead ends: 901 [2020-08-21 22:48:19,024 INFO L226 Difference]: Without dead ends: 522 [2020-08-21 22:48:19,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-21 22:48:19,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-08-21 22:48:19,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 415. [2020-08-21 22:48:19,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-08-21 22:48:19,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 471 transitions. [2020-08-21 22:48:19,134 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 471 transitions. Word has length 93 [2020-08-21 22:48:19,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:19,137 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 471 transitions. [2020-08-21 22:48:19,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 22:48:19,137 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 471 transitions. [2020-08-21 22:48:19,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-21 22:48:19,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:19,140 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 22:48:19,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:48:19,141 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:19,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:19,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1929646711, now seen corresponding path program 1 times [2020-08-21 22:48:19,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:19,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653515605] [2020-08-21 22:48:19,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:19,415 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:48:19,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:19,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:19,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:48:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:19,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:48:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:19,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:48:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:19,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:48:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:19,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:48:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:19,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:48:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:19,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:19,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:19,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:19,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:19,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:19,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-21 22:48:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:19,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 22:48:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:19,591 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 22:48:19,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653515605] [2020-08-21 22:48:19,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:19,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:48:19,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341302134] [2020-08-21 22:48:19,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:48:19,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:19,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:48:19,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:48:19,594 INFO L87 Difference]: Start difference. First operand 415 states and 471 transitions. Second operand 8 states. [2020-08-21 22:48:20,364 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:48:20,921 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:48:23,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:23,677 INFO L93 Difference]: Finished difference Result 1240 states and 1603 transitions. [2020-08-21 22:48:23,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 22:48:23,678 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-08-21 22:48:23,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:23,685 INFO L225 Difference]: With dead ends: 1240 [2020-08-21 22:48:23,685 INFO L226 Difference]: Without dead ends: 853 [2020-08-21 22:48:23,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-21 22:48:23,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-08-21 22:48:23,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 721. [2020-08-21 22:48:23,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-08-21 22:48:23,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 849 transitions. [2020-08-21 22:48:23,867 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 849 transitions. Word has length 93 [2020-08-21 22:48:23,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:23,868 INFO L479 AbstractCegarLoop]: Abstraction has 721 states and 849 transitions. [2020-08-21 22:48:23,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:48:23,868 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 849 transitions. [2020-08-21 22:48:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 22:48:23,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:23,872 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, 1, 1, 1, 1] [2020-08-21 22:48:23,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:48:23,873 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:23,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:23,873 INFO L82 PathProgramCache]: Analyzing trace with hash 446997693, now seen corresponding path program 1 times [2020-08-21 22:48:23,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:23,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345953233] [2020-08-21 22:48:23,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:24,138 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:48:24,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:24,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:24,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:48:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:24,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:48:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:24,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:48:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:24,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:48:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:24,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:48:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:24,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:48:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:24,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:48:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:24,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:24,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:24,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:24,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:24,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:24,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 22:48:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:24,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 22:48:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:24,270 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 22:48:24,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345953233] [2020-08-21 22:48:24,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:48:24,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:48:24,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841665508] [2020-08-21 22:48:24,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:48:24,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:24,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:48:24,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:48:24,274 INFO L87 Difference]: Start difference. First operand 721 states and 849 transitions. Second operand 8 states. [2020-08-21 22:48:24,810 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:48:27,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:27,500 INFO L93 Difference]: Finished difference Result 1414 states and 1816 transitions. [2020-08-21 22:48:27,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 22:48:27,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-08-21 22:48:27,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:27,511 INFO L225 Difference]: With dead ends: 1414 [2020-08-21 22:48:27,511 INFO L226 Difference]: Without dead ends: 1411 [2020-08-21 22:48:27,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2020-08-21 22:48:27,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2020-08-21 22:48:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1213. [2020-08-21 22:48:27,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2020-08-21 22:48:27,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1442 transitions. [2020-08-21 22:48:27,776 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1442 transitions. Word has length 97 [2020-08-21 22:48:27,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:27,776 INFO L479 AbstractCegarLoop]: Abstraction has 1213 states and 1442 transitions. [2020-08-21 22:48:27,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:48:27,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1442 transitions. [2020-08-21 22:48:27,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-21 22:48:27,786 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:27,787 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, 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 22:48:27,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:48:27,788 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:27,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:27,789 INFO L82 PathProgramCache]: Analyzing trace with hash 350097324, now seen corresponding path program 1 times [2020-08-21 22:48:27,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:27,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79991234] [2020-08-21 22:48:27,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,129 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:48:28,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:48:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:48:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:48:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:48:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:48:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:48:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:48:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 22:48:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:48:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 22:48:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-21 22:48:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-21 22:48:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-21 22:48:28,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79991234] [2020-08-21 22:48:28,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:48:28,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 22:48:28,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464488027] [2020-08-21 22:48:28,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 22:48:28,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:28,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 22:48:28,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:48:28,394 INFO L87 Difference]: Start difference. First operand 1213 states and 1442 transitions. Second operand 13 states. [2020-08-21 22:48:29,130 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:48:29,380 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:48:29,606 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 22:48:30,582 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:48:32,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:32,483 INFO L93 Difference]: Finished difference Result 2164 states and 2684 transitions. [2020-08-21 22:48:32,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 22:48:32,484 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 160 [2020-08-21 22:48:32,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:32,494 INFO L225 Difference]: With dead ends: 2164 [2020-08-21 22:48:32,495 INFO L226 Difference]: Without dead ends: 1113 [2020-08-21 22:48:32,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2020-08-21 22:48:32,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2020-08-21 22:48:32,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 990. [2020-08-21 22:48:32,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-08-21 22:48:32,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1164 transitions. [2020-08-21 22:48:32,782 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1164 transitions. Word has length 160 [2020-08-21 22:48:32,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:32,783 INFO L479 AbstractCegarLoop]: Abstraction has 990 states and 1164 transitions. [2020-08-21 22:48:32,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 22:48:32,783 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1164 transitions. [2020-08-21 22:48:32,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-08-21 22:48:32,788 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:48:32,789 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:48:32,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 22:48:32,789 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:48:32,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:48:32,790 INFO L82 PathProgramCache]: Analyzing trace with hash -524813042, now seen corresponding path program 1 times [2020-08-21 22:48:32,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:48:32,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365608921] [2020-08-21 22:48:32,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:48:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,141 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:48:33,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:48:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:48:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:48:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:48:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:48:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 22:48:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:48:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:48:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:48:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:48:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 22:48:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 22:48:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 22:48:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 22:48:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 22:48:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:48:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 22:48:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:48:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-21 22:48:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-21 22:48:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:48:33,570 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-08-21 22:48:33,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365608921] [2020-08-21 22:48:33,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:48:33,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 22:48:33,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957069537] [2020-08-21 22:48:33,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 22:48:33,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:48:33,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 22:48:33,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-21 22:48:33,574 INFO L87 Difference]: Start difference. First operand 990 states and 1164 transitions. Second operand 19 states. [2020-08-21 22:48:34,422 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:48:34,746 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:48:35,004 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:48:35,252 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 22:48:35,898 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:48:37,112 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:37,480 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:38,773 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:39,026 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:39,306 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:39,573 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:39,836 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:40,102 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:40,408 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:40,673 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:48:41,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:48:41,736 INFO L93 Difference]: Finished difference Result 1901 states and 2314 transitions. [2020-08-21 22:48:41,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-21 22:48:41,737 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 173 [2020-08-21 22:48:41,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:48:41,739 INFO L225 Difference]: With dead ends: 1901 [2020-08-21 22:48:41,739 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 22:48:41,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=539, Invalid=2541, Unknown=0, NotChecked=0, Total=3080 [2020-08-21 22:48:41,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 22:48:41,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 22:48:41,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 22:48:41,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 22:48:41,746 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 173 [2020-08-21 22:48:41,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:48:41,746 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 22:48:41,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 22:48:41,746 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 22:48:41,747 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 22:48:41,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 22:48:41,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 22:48:44,363 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 332 DAG size of output: 294 [2020-08-21 22:48:45,319 WARN L193 SmtUtils]: Spent 950.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 320 [2020-08-21 22:48:45,563 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 28 [2020-08-21 22:48:45,711 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 25 [2020-08-21 22:48:45,830 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 26