/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:34:39,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:34:39,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:34:39,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:34:39,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:34:39,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:34:39,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:34:39,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:34:39,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:34:39,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:34:39,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:34:39,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:34:39,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:34:39,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:34:39,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:34:39,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:34:39,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:34:39,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:34:39,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:34:39,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:34:39,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:34:39,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:34:39,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:34:39,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:34:39,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:34:39,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:34:39,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:34:39,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:34:39,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:34:39,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:34:39,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:34:39,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:34:39,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:34:39,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:34:39,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:34:39,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:34:39,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:34:39,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:34:39,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:34:39,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:34:39,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:34:39,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 18:34:39,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:34:39,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:34:39,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:34:39,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:34:39,908 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:34:39,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:34:39,909 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:34:39,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:34:39,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:34:39,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:34:39,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:34:39,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:34:39,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:34:39,910 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:34:39,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:34:39,911 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:34:39,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:34:39,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:34:39,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:34:39,911 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:34:39,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:34:39,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:34:39,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:34:39,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:34:39,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:34:39,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:34:39,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:34:39,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:34:39,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:34:39,913 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=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:34:40,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:34:40,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:34:40,248 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:34:40,249 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:34:40,250 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:34:40,251 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_productSimulator.cil.c [2020-08-18 18:34:40,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8051ba4d/bb26f041a92a497b85a86efd7fb3e20a/FLAG83f130197 [2020-08-18 18:34:40,873 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:34:40,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_productSimulator.cil.c [2020-08-18 18:34:40,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8051ba4d/bb26f041a92a497b85a86efd7fb3e20a/FLAG83f130197 [2020-08-18 18:34:41,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8051ba4d/bb26f041a92a497b85a86efd7fb3e20a [2020-08-18 18:34:41,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:34:41,083 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:34:41,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:34:41,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:34:41,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:34:41,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:34:41" (1/1) ... [2020-08-18 18:34:41,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b79fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:41, skipping insertion in model container [2020-08-18 18:34:41,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:34:41" (1/1) ... [2020-08-18 18:34:41,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:34:41,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:34:41,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:34:41,502 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:34:41,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:34:41,791 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:34:41,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:41 WrapperNode [2020-08-18 18:34:41,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:34:41,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:34:41,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:34:41,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:34:41,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:41" (1/1) ... [2020-08-18 18:34:41,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:41" (1/1) ... [2020-08-18 18:34:41,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:41" (1/1) ... [2020-08-18 18:34:41,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:41" (1/1) ... [2020-08-18 18:34:41,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:41" (1/1) ... [2020-08-18 18:34:41,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:41" (1/1) ... [2020-08-18 18:34:41,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:41" (1/1) ... [2020-08-18 18:34:41,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:34:41,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:34:41,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:34:41,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:34:41,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:34:41,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:34:41,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:34:41,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 18:34:41,945 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 18:34:41,945 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 18:34:41,945 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 18:34:41,945 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 18:34:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:34:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 18:34:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 18:34:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-18 18:34:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-18 18:34:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-18 18:34:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-18 18:34:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-18 18:34:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-18 18:34:41,948 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 18:34:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-18 18:34:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-18 18:34:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 18:34:41,950 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 18:34:41,950 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 18:34:41,950 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 18:34:41,950 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 18:34:41,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 18:34:41,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 18:34:41,953 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 18:34:41,953 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 18:34:41,953 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 18:34:41,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 18:34:41,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 18:34:41,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 18:34:41,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 18:34:41,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 18:34:41,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 18:34:41,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 18:34:41,954 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 18:34:41,955 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 18:34:41,955 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 18:34:41,955 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 18:34:41,955 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 18:34:41,955 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 18:34:41,955 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 18:34:41,955 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 18:34:41,955 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 18:34:41,955 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 18:34:41,956 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 18:34:41,956 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 18:34:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:34:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:34:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 18:34:41,956 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 18:34:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 18:34:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 18:34:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 18:34:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 18:34:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 18:34:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 18:34:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 18:34:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 18:34:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 18:34:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 18:34:41,958 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 18:34:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:34:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 18:34:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 18:34:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 18:34:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 18:34:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 18:34:41,959 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 18:34:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 18:34:41,960 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 18:34:41,961 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 18:34:41,961 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 18:34:41,961 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 18:34:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 18:34:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 18:34:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 18:34:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-18 18:34:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 18:34:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-18 18:34:41,962 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-18 18:34:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 18:34:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-18 18:34:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-18 18:34:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 18:34:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-18 18:34:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-18 18:34:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-18 18:34:41,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 18:34:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 18:34:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:34:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 18:34:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 18:34:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:34:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:34:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:34:41,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:34:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 18:34:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:34:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 18:34:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 18:34:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:34:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 18:34:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 18:34:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 18:34:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 18:34:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:34:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 18:34:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:34:43,020 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:34:43,020 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 18:34:43,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:34:43 BoogieIcfgContainer [2020-08-18 18:34:43,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:34:43,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:34:43,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:34:43,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:34:43,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:34:41" (1/3) ... [2020-08-18 18:34:43,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f57b02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:34:43, skipping insertion in model container [2020-08-18 18:34:43,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:34:41" (2/3) ... [2020-08-18 18:34:43,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f57b02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:34:43, skipping insertion in model container [2020-08-18 18:34:43,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:34:43" (3/3) ... [2020-08-18 18:34:43,034 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_productSimulator.cil.c [2020-08-18 18:34:43,045 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:34:43,053 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:34:43,069 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:34:43,097 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:34:43,098 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:34:43,098 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:34:43,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:34:43,098 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:34:43,099 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:34:43,099 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:34:43,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:34:43,123 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states. [2020-08-18 18:34:43,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 18:34:43,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:34:43,137 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:34:43,138 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:34:43,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:34:43,144 INFO L82 PathProgramCache]: Analyzing trace with hash 88276295, now seen corresponding path program 1 times [2020-08-18 18:34:43,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:34:43,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649059014] [2020-08-18 18:34:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:34:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:43,972 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 18:34:43,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:34:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:44,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:44,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:34:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:44,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:44,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:44,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 18:34:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:44,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:34:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:44,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 18:34:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:44,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 18:34:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:44,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:34:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:44,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 18:34:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:44,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 18:34:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:44,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 18:34:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:44,131 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 18:34:44,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649059014] [2020-08-18 18:34:44,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:34:44,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 18:34:44,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637931658] [2020-08-18 18:34:44,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 18:34:44,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:34:44,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 18:34:44,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 18:34:44,159 INFO L87 Difference]: Start difference. First operand 245 states. Second operand 5 states. [2020-08-18 18:34:46,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:34:46,453 INFO L93 Difference]: Finished difference Result 442 states and 581 transitions. [2020-08-18 18:34:46,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:34:46,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-08-18 18:34:46,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:34:46,471 INFO L225 Difference]: With dead ends: 442 [2020-08-18 18:34:46,472 INFO L226 Difference]: Without dead ends: 251 [2020-08-18 18:34:46,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:34:46,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-08-18 18:34:46,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 202. [2020-08-18 18:34:46,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-18 18:34:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 247 transitions. [2020-08-18 18:34:46,603 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 247 transitions. Word has length 78 [2020-08-18 18:34:46,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:34:46,604 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 247 transitions. [2020-08-18 18:34:46,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 18:34:46,604 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 247 transitions. [2020-08-18 18:34:46,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 18:34:46,609 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:34:46,609 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:34:46,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:34:46,610 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:34:46,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:34:46,610 INFO L82 PathProgramCache]: Analyzing trace with hash 128874418, now seen corresponding path program 1 times [2020-08-18 18:34:46,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:34:46,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580524488] [2020-08-18 18:34:46,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:34:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:46,998 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 18:34:46,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:34:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:47,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:47,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:34:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:47,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:47,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:47,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 18:34:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:47,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:34:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:47,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 18:34:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:47,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 18:34:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:47,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:34:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:47,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 18:34:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:47,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 18:34:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:47,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 18:34:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 18:34:47,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580524488] [2020-08-18 18:34:47,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:34:47,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:34:47,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845338957] [2020-08-18 18:34:47,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:34:47,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:34:47,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:34:47,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:34:47,128 INFO L87 Difference]: Start difference. First operand 202 states and 247 transitions. Second operand 6 states. [2020-08-18 18:34:47,903 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 18:34:49,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:34:49,631 INFO L93 Difference]: Finished difference Result 366 states and 459 transitions. [2020-08-18 18:34:49,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 18:34:49,632 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-08-18 18:34:49,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:34:49,637 INFO L225 Difference]: With dead ends: 366 [2020-08-18 18:34:49,637 INFO L226 Difference]: Without dead ends: 235 [2020-08-18 18:34:49,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-08-18 18:34:49,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-18 18:34:49,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 193. [2020-08-18 18:34:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-18 18:34:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 235 transitions. [2020-08-18 18:34:49,694 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 235 transitions. Word has length 79 [2020-08-18 18:34:49,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:34:49,695 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 235 transitions. [2020-08-18 18:34:49,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:34:49,695 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 235 transitions. [2020-08-18 18:34:49,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 18:34:49,697 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:34:49,698 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:34:49,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:34:49,698 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:34:49,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:34:49,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2075074883, now seen corresponding path program 1 times [2020-08-18 18:34:49,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:34:49,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972704285] [2020-08-18 18:34:49,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:34:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:50,187 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 18:34:50,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:34:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:50,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:50,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:34:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:50,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:50,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:50,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 18:34:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:50,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:34:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:50,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 18:34:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:50,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 18:34:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:50,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:34:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:50,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 18:34:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:50,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 18:34:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:50,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 18:34:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:50,383 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 18:34:50,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972704285] [2020-08-18 18:34:50,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:34:50,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 18:34:50,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16120658] [2020-08-18 18:34:50,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:34:50,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:34:50,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:34:50,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:34:50,385 INFO L87 Difference]: Start difference. First operand 193 states and 235 transitions. Second operand 12 states. [2020-08-18 18:34:50,919 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 18:34:51,578 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-18 18:34:52,371 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-18 18:34:53,445 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 18:34:53,836 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 18:34:57,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:34:57,548 INFO L93 Difference]: Finished difference Result 628 states and 796 transitions. [2020-08-18 18:34:57,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 18:34:57,549 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-18 18:34:57,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:34:57,561 INFO L225 Difference]: With dead ends: 628 [2020-08-18 18:34:57,561 INFO L226 Difference]: Without dead ends: 476 [2020-08-18 18:34:57,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-08-18 18:34:57,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-08-18 18:34:57,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 385. [2020-08-18 18:34:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-18 18:34:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 480 transitions. [2020-08-18 18:34:57,736 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 480 transitions. Word has length 84 [2020-08-18 18:34:57,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:34:57,737 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 480 transitions. [2020-08-18 18:34:57,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:34:57,737 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 480 transitions. [2020-08-18 18:34:57,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 18:34:57,740 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:34:57,740 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:34:57,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:34:57,741 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:34:57,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:34:57,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1129127896, now seen corresponding path program 1 times [2020-08-18 18:34:57,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:34:57,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803497494] [2020-08-18 18:34:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:34:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:58,191 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 18:34:58,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:34:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:58,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:58,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:34:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:58,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:34:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:58,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:34:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:58,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 18:34:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:58,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:34:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:58,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 18:34:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:58,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 18:34:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:58,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:34:58,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:58,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 18:34:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:58,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 18:34:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:58,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 18:34:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:58,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 18:34:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:34:58,381 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 18:34:58,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803497494] [2020-08-18 18:34:58,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:34:58,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-08-18 18:34:58,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117997569] [2020-08-18 18:34:58,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 18:34:58,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:34:58,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 18:34:58,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-08-18 18:34:58,385 INFO L87 Difference]: Start difference. First operand 385 states and 480 transitions. Second operand 16 states. [2020-08-18 18:34:58,977 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 18:34:59,644 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-18 18:35:00,446 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-18 18:35:01,276 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 18:35:02,158 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 18:35:03,251 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-18 18:35:04,006 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 215 [2020-08-18 18:35:04,724 WARN L193 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 215 [2020-08-18 18:35:05,068 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-18 18:35:05,430 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 18:35:05,929 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-18 18:35:06,395 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-18 18:35:06,904 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-18 18:35:11,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:35:11,348 INFO L93 Difference]: Finished difference Result 1582 states and 2206 transitions. [2020-08-18 18:35:11,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 18:35:11,354 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 90 [2020-08-18 18:35:11,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:35:11,364 INFO L225 Difference]: With dead ends: 1582 [2020-08-18 18:35:11,364 INFO L226 Difference]: Without dead ends: 1238 [2020-08-18 18:35:11,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=352, Invalid=1208, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 18:35:11,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-08-18 18:35:11,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1109. [2020-08-18 18:35:11,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2020-08-18 18:35:11,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1462 transitions. [2020-08-18 18:35:11,710 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1462 transitions. Word has length 90 [2020-08-18 18:35:11,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:35:11,710 INFO L479 AbstractCegarLoop]: Abstraction has 1109 states and 1462 transitions. [2020-08-18 18:35:11,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 18:35:11,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1462 transitions. [2020-08-18 18:35:11,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 18:35:11,714 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:35:11,714 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:35:11,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:35:11,715 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:35:11,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:35:11,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1905240978, now seen corresponding path program 1 times [2020-08-18 18:35:11,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:35:11,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319959852] [2020-08-18 18:35:11,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:35:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:12,014 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 18:35:12,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:35:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:12,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:35:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:12,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:35:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:12,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:12,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:35:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:12,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 18:35:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:12,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:35:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:12,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 18:35:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:12,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 18:35:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:12,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:35:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:12,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 18:35:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:12,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 18:35:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:12,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 18:35:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:12,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 18:35:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:12,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 18:35:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:12,172 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 18:35:12,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319959852] [2020-08-18 18:35:12,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:35:12,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 18:35:12,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21351525] [2020-08-18 18:35:12,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 18:35:12,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:35:12,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 18:35:12,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:35:12,174 INFO L87 Difference]: Start difference. First operand 1109 states and 1462 transitions. Second operand 8 states. [2020-08-18 18:35:12,614 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 18:35:16,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:35:16,072 INFO L93 Difference]: Finished difference Result 2674 states and 3837 transitions. [2020-08-18 18:35:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 18:35:16,073 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-18 18:35:16,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:35:16,091 INFO L225 Difference]: With dead ends: 2674 [2020-08-18 18:35:16,091 INFO L226 Difference]: Without dead ends: 1606 [2020-08-18 18:35:16,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-08-18 18:35:16,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2020-08-18 18:35:16,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1507. [2020-08-18 18:35:16,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1507 states. [2020-08-18 18:35:16,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 2004 transitions. [2020-08-18 18:35:16,429 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 2004 transitions. Word has length 94 [2020-08-18 18:35:16,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:35:16,430 INFO L479 AbstractCegarLoop]: Abstraction has 1507 states and 2004 transitions. [2020-08-18 18:35:16,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 18:35:16,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 2004 transitions. [2020-08-18 18:35:16,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-08-18 18:35:16,434 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:35:16,434 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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] [2020-08-18 18:35:16,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:35:16,435 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:35:16,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:35:16,435 INFO L82 PathProgramCache]: Analyzing trace with hash -509299228, now seen corresponding path program 1 times [2020-08-18 18:35:16,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:35:16,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097227200] [2020-08-18 18:35:16,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:35:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:16,802 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 18:35:16,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:35:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:16,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:35:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:16,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:35:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:16,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:16,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:35:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:16,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 18:35:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:16,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:35:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:16,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 18:35:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:16,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 18:35:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:16,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:35:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:16,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 18:35:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:16,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 18:35:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:17,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 18:35:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:17,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 18:35:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:17,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:17,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:17,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 18:35:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:17,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-18 18:35:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:17,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 18:35:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:17,087 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-08-18 18:35:17,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097227200] [2020-08-18 18:35:17,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:35:17,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 18:35:17,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641056805] [2020-08-18 18:35:17,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:35:17,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:35:17,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:35:17,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:35:17,090 INFO L87 Difference]: Start difference. First operand 1507 states and 2004 transitions. Second operand 12 states. [2020-08-18 18:35:17,863 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 210 [2020-08-18 18:35:18,756 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 18:35:22,069 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 18:35:26,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:35:26,009 INFO L93 Difference]: Finished difference Result 2888 states and 4054 transitions. [2020-08-18 18:35:26,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 18:35:26,010 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 122 [2020-08-18 18:35:26,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:35:26,023 INFO L225 Difference]: With dead ends: 2888 [2020-08-18 18:35:26,024 INFO L226 Difference]: Without dead ends: 1787 [2020-08-18 18:35:26,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=314, Invalid=1018, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 18:35:26,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2020-08-18 18:35:26,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1658. [2020-08-18 18:35:26,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-08-18 18:35:26,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2197 transitions. [2020-08-18 18:35:26,384 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2197 transitions. Word has length 122 [2020-08-18 18:35:26,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:35:26,384 INFO L479 AbstractCegarLoop]: Abstraction has 1658 states and 2197 transitions. [2020-08-18 18:35:26,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:35:26,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2197 transitions. [2020-08-18 18:35:26,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-18 18:35:26,390 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:35:26,391 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:35:26,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:35:26,391 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:35:26,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:35:26,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1658452204, now seen corresponding path program 1 times [2020-08-18 18:35:26,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:35:26,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092660363] [2020-08-18 18:35:26,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:35:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,735 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 18:35:26,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:35:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:35:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:35:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:35:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 18:35:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:35:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 18:35:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 18:35:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:35:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 18:35:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 18:35:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:35:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:26,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:27,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 18:35:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:27,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:27,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-18 18:35:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:27,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 18:35:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:27,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:27,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:27,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:27,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-18 18:35:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:27,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-18 18:35:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-08-18 18:35:27,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092660363] [2020-08-18 18:35:27,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:35:27,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 18:35:27,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081234633] [2020-08-18 18:35:27,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 18:35:27,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:35:27,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 18:35:27,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-08-18 18:35:27,141 INFO L87 Difference]: Start difference. First operand 1658 states and 2197 transitions. Second operand 12 states. [2020-08-18 18:35:29,387 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 18:35:29,715 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-18 18:35:30,010 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 18:35:30,322 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 18:35:32,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:35:32,266 INFO L93 Difference]: Finished difference Result 3445 states and 4958 transitions. [2020-08-18 18:35:32,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 18:35:32,269 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 166 [2020-08-18 18:35:32,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:35:32,288 INFO L225 Difference]: With dead ends: 3445 [2020-08-18 18:35:32,289 INFO L226 Difference]: Without dead ends: 1828 [2020-08-18 18:35:32,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-08-18 18:35:32,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2020-08-18 18:35:32,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1688. [2020-08-18 18:35:32,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-08-18 18:35:32,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2231 transitions. [2020-08-18 18:35:32,767 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2231 transitions. Word has length 166 [2020-08-18 18:35:32,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:35:32,767 INFO L479 AbstractCegarLoop]: Abstraction has 1688 states and 2231 transitions. [2020-08-18 18:35:32,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 18:35:32,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2231 transitions. [2020-08-18 18:35:32,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-08-18 18:35:32,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:35:32,774 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:35:32,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 18:35:32,774 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:35:32,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:35:32,775 INFO L82 PathProgramCache]: Analyzing trace with hash 600614126, now seen corresponding path program 1 times [2020-08-18 18:35:32,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:35:32,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87941049] [2020-08-18 18:35:32,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:35:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,199 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 18:35:33,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:35:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:35:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:35:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:35:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 18:35:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:35:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 18:35:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 18:35:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:35:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 18:35:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 18:35:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:35:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 18:35:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-18 18:35:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 18:35:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-08-18 18:35:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-18 18:35:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:33,514 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-08-18 18:35:33,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87941049] [2020-08-18 18:35:33,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:35:33,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 18:35:33,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840728615] [2020-08-18 18:35:33,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 18:35:33,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:35:33,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 18:35:33,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-18 18:35:33,518 INFO L87 Difference]: Start difference. First operand 1688 states and 2231 transitions. Second operand 15 states. [2020-08-18 18:35:34,560 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 18:35:35,096 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 18:35:36,349 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 18:35:36,702 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 18:35:37,033 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 18:35:39,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:35:39,166 INFO L93 Difference]: Finished difference Result 3100 states and 4291 transitions. [2020-08-18 18:35:39,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 18:35:39,167 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 166 [2020-08-18 18:35:39,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:35:39,177 INFO L225 Difference]: With dead ends: 3100 [2020-08-18 18:35:39,177 INFO L226 Difference]: Without dead ends: 1453 [2020-08-18 18:35:39,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2020-08-18 18:35:39,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2020-08-18 18:35:39,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1387. [2020-08-18 18:35:39,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1387 states. [2020-08-18 18:35:39,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1808 transitions. [2020-08-18 18:35:39,503 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1808 transitions. Word has length 166 [2020-08-18 18:35:39,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:35:39,504 INFO L479 AbstractCegarLoop]: Abstraction has 1387 states and 1808 transitions. [2020-08-18 18:35:39,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 18:35:39,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1808 transitions. [2020-08-18 18:35:39,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-08-18 18:35:39,509 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:35:39,509 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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] [2020-08-18 18:35:39,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 18:35:39,509 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:35:39,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:35:39,510 INFO L82 PathProgramCache]: Analyzing trace with hash 47025257, now seen corresponding path program 1 times [2020-08-18 18:35:39,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:35:39,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329904805] [2020-08-18 18:35:39,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:35:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:39,834 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 18:35:39,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:35:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:39,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:35:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:39,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 18:35:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:39,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:39,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 18:35:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:39,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 18:35:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:39,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:35:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:39,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 18:35:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:39,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 18:35:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:39,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 18:35:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:39,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 18:35:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:39,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 18:35:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:39,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 18:35:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:39,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:39,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:39,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:40,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:40,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 18:35:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:40,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:40,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 18:35:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:40,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:40,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 18:35:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:40,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:40,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-18 18:35:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:40,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 18:35:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:40,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:40,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:40,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 18:35:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:40,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-08-18 18:35:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:40,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-18 18:35:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:35:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-08-18 18:35:40,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329904805] [2020-08-18 18:35:40,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 18:35:40,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 18:35:40,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408868245] [2020-08-18 18:35:40,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 18:35:40,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:35:40,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 18:35:40,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-18 18:35:40,126 INFO L87 Difference]: Start difference. First operand 1387 states and 1808 transitions. Second operand 10 states. [2020-08-18 18:35:41,012 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 210