/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:14:49,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:14:49,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:14:49,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:14:49,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:14:49,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:14:49,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:14:49,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:14:49,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:14:49,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:14:49,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:14:49,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:14:49,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:14:49,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:14:49,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:14:49,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:14:49,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:14:49,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:14:49,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:14:49,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:14:49,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:14:49,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:14:49,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:14:49,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:14:49,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:14:49,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:14:49,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:14:49,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:14:49,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:14:49,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:14:49,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:14:49,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:14:49,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:14:49,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:14:49,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:14:49,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:14:49,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:14:49,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:14:49,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:14:49,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:14:49,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:14:49,944 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 [2020-08-19 00:14:49,964 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:14:49,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:14:49,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:14:49,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:14:49,966 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:14:49,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:14:49,967 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:14:49,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:14:49,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:14:49,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:14:49,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:14:49,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:14:49,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:14:49,968 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:14:49,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:14:49,968 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:14:49,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:14:49,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:14:49,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:14:49,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:14:49,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:14:49,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:14:49,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:14:49,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:14:49,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:14:49,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:14:49,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:14:49,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:14:49,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:14:49,971 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=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:14:50,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:14:50,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:14:50,311 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:14:50,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:14:50,313 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:14:50,314 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product44.cil.c [2020-08-19 00:14:50,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/214139ad9/ca46e2dc5a4a46d082624b01a7f76541/FLAG0bb7695ff [2020-08-19 00:14:50,927 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:14:50,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product44.cil.c [2020-08-19 00:14:50,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/214139ad9/ca46e2dc5a4a46d082624b01a7f76541/FLAG0bb7695ff [2020-08-19 00:14:51,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/214139ad9/ca46e2dc5a4a46d082624b01a7f76541 [2020-08-19 00:14:51,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:14:51,236 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:14:51,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:14:51,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:14:51,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:14:51,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:14:51" (1/1) ... [2020-08-19 00:14:51,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ba42874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:51, skipping insertion in model container [2020-08-19 00:14:51,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:14:51" (1/1) ... [2020-08-19 00:14:51,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:14:51,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:14:51,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:14:51,789 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:14:51,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:14:51,903 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:14:51,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:51 WrapperNode [2020-08-19 00:14:51,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:14:51,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:14:51,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:14:51,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:14:51,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:51" (1/1) ... [2020-08-19 00:14:51,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:51" (1/1) ... [2020-08-19 00:14:51,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:51" (1/1) ... [2020-08-19 00:14:51,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:51" (1/1) ... [2020-08-19 00:14:51,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:51" (1/1) ... [2020-08-19 00:14:51,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:51" (1/1) ... [2020-08-19 00:14:51,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:51" (1/1) ... [2020-08-19 00:14:51,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:14:51,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:14:51,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:14:51,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:14:51,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:51" (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 [2020-08-19 00:14:52,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:14:52,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:14:52,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:14:52,071 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:14:52,071 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:14:52,071 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:14:52,071 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:14:52,071 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:14:52,072 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:14:52,072 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:14:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:14:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:14:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:14:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:14:52,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:14:52,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:14:52,074 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:14:52,075 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:14:52,075 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:14:52,075 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 00:14:52,075 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:14:52,075 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:14:52,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:14:52,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:14:52,076 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:14:52,077 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:14:52,077 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 00:14:52,077 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 00:14:52,077 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:14:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:14:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:14:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:14:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:14:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:14:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:14:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:14:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:14:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:14:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:14:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 00:14:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 00:14:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 00:14:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:14:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:14:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:14:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:14:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:14:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:14:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:14:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:14:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:14:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:14:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:14:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:14:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:14:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:14:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:14:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:14:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:14:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:14:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:14:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:14:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:14:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:14:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:14:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:14:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:14:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:14:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:14:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:14:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:14:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:14:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:14:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:14:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 00:14:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 00:14:52,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 00:14:52,087 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 00:14:52,087 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:14:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:14:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:14:52,088 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 00:14:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:14:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:14:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:14:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:14:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:14:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:14:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:14:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:14:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:14:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 00:14:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:14:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:14:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:14:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:14:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:14:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:14:53,161 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:14:53,161 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:14:53,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:14:53 BoogieIcfgContainer [2020-08-19 00:14:53,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:14:53,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:14:53,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:14:53,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:14:53,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:14:51" (1/3) ... [2020-08-19 00:14:53,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac8f37c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:14:53, skipping insertion in model container [2020-08-19 00:14:53,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:14:51" (2/3) ... [2020-08-19 00:14:53,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac8f37c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:14:53, skipping insertion in model container [2020-08-19 00:14:53,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:14:53" (3/3) ... [2020-08-19 00:14:53,175 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product44.cil.c [2020-08-19 00:14:53,185 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:14:53,193 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:14:53,206 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:14:53,229 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:14:53,230 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:14:53,230 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:14:53,230 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:14:53,230 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:14:53,231 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:14:53,231 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:14:53,231 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:14:53,253 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-08-19 00:14:53,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 00:14:53,263 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:14:53,265 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:14:53,265 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:14:53,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:14:53,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1834170296, now seen corresponding path program 1 times [2020-08-19 00:14:53,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:14:53,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364382913] [2020-08-19 00:14:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:14:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:53,930 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:14:53,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:14:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:53,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:14:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:53,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:14:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:53,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:14:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:53,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:14:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:54,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:14:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:54,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:14:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:54,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:14:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:54,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:14:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:54,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:14:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:54,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:14:54,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364382913] [2020-08-19 00:14:54,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:14:54,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:14:54,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121303362] [2020-08-19 00:14:54,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:14:54,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:14:54,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:14:54,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:14:54,102 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 4 states. [2020-08-19 00:14:55,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:14:55,245 INFO L93 Difference]: Finished difference Result 318 states and 403 transitions. [2020-08-19 00:14:55,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:14:55,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 00:14:55,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:14:55,262 INFO L225 Difference]: With dead ends: 318 [2020-08-19 00:14:55,263 INFO L226 Difference]: Without dead ends: 176 [2020-08-19 00:14:55,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:14:55,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-08-19 00:14:55,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 143. [2020-08-19 00:14:55,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-19 00:14:55,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 165 transitions. [2020-08-19 00:14:55,364 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 165 transitions. Word has length 59 [2020-08-19 00:14:55,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:14:55,365 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 165 transitions. [2020-08-19 00:14:55,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:14:55,365 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 165 transitions. [2020-08-19 00:14:55,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 00:14:55,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:14:55,369 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:14:55,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:14:55,370 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:14:55,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:14:55,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1514103119, now seen corresponding path program 1 times [2020-08-19 00:14:55,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:14:55,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042424282] [2020-08-19 00:14:55,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:14:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,759 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:14:55,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:14:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:14:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:14:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:14:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:14:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:14:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:14:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:14:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:14:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 00:14:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:14:55,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042424282] [2020-08-19 00:14:55,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:14:55,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:14:55,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718210852] [2020-08-19 00:14:55,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:14:55,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:14:55,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:14:55,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:14:55,818 INFO L87 Difference]: Start difference. First operand 143 states and 165 transitions. Second operand 5 states. [2020-08-19 00:14:56,252 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:14:57,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:14:57,201 INFO L93 Difference]: Finished difference Result 250 states and 301 transitions. [2020-08-19 00:14:57,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:14:57,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 00:14:57,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:14:57,207 INFO L225 Difference]: With dead ends: 250 [2020-08-19 00:14:57,208 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 00:14:57,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:14:57,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 00:14:57,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 134. [2020-08-19 00:14:57,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-19 00:14:57,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 153 transitions. [2020-08-19 00:14:57,271 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 153 transitions. Word has length 60 [2020-08-19 00:14:57,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:14:57,272 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 153 transitions. [2020-08-19 00:14:57,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:14:57,272 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 153 transitions. [2020-08-19 00:14:57,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 00:14:57,280 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:14:57,281 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:14:57,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:14:57,281 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:14:57,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:14:57,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1793464780, now seen corresponding path program 1 times [2020-08-19 00:14:57,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:14:57,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097278640] [2020-08-19 00:14:57,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:14:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:57,641 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:14:57,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:14:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:57,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:14:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:57,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:14:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:57,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:14:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:57,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:14:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:57,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:14:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:57,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:14:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:57,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:14:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:57,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:14:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:57,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 00:14:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:14:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:14:57,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097278640] [2020-08-19 00:14:57,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:14:57,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:14:57,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591082853] [2020-08-19 00:14:57,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:14:57,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:14:57,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:14:57,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:14:57,799 INFO L87 Difference]: Start difference. First operand 134 states and 153 transitions. Second operand 9 states. [2020-08-19 00:14:58,131 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:14:58,444 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:14:58,690 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:14:58,924 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:14:59,807 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:01,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:01,517 INFO L93 Difference]: Finished difference Result 451 states and 548 transitions. [2020-08-19 00:15:01,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:15:01,518 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-19 00:15:01,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:01,524 INFO L225 Difference]: With dead ends: 451 [2020-08-19 00:15:01,524 INFO L226 Difference]: Without dead ends: 345 [2020-08-19 00:15:01,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:15:01,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-08-19 00:15:01,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 272. [2020-08-19 00:15:01,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-08-19 00:15:01,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 322 transitions. [2020-08-19 00:15:01,591 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 322 transitions. Word has length 65 [2020-08-19 00:15:01,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:01,591 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 322 transitions. [2020-08-19 00:15:01,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:15:01,592 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 322 transitions. [2020-08-19 00:15:01,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 00:15:01,594 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:01,594 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:01,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:15:01,595 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:01,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:01,595 INFO L82 PathProgramCache]: Analyzing trace with hash -10520395, now seen corresponding path program 1 times [2020-08-19 00:15:01,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:01,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076747445] [2020-08-19 00:15:01,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:01,943 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:01,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:01,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:01,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:15:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:15:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 00:15:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 00:15:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 00:15:02,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076747445] [2020-08-19 00:15:02,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:02,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:15:02,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838448671] [2020-08-19 00:15:02,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:15:02,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:02,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:15:02,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:15:02,102 INFO L87 Difference]: Start difference. First operand 272 states and 322 transitions. Second operand 9 states. [2020-08-19 00:15:02,490 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:03,184 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:04,088 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:04,333 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:04,654 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:04,953 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:05,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:05,617 INFO L93 Difference]: Finished difference Result 695 states and 884 transitions. [2020-08-19 00:15:05,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 00:15:05,618 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-19 00:15:05,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:05,624 INFO L225 Difference]: With dead ends: 695 [2020-08-19 00:15:05,624 INFO L226 Difference]: Without dead ends: 451 [2020-08-19 00:15:05,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:15:05,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-08-19 00:15:05,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 387. [2020-08-19 00:15:05,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-19 00:15:05,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 459 transitions. [2020-08-19 00:15:05,714 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 459 transitions. Word has length 70 [2020-08-19 00:15:05,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:05,715 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 459 transitions. [2020-08-19 00:15:05,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:15:05,715 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 459 transitions. [2020-08-19 00:15:05,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-19 00:15:05,718 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:05,718 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:05,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:15:05,718 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:05,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:05,719 INFO L82 PathProgramCache]: Analyzing trace with hash -762155168, now seen corresponding path program 1 times [2020-08-19 00:15:05,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:05,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442483943] [2020-08-19 00:15:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:05,990 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:05,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:06,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:06,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:06,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:06,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:06,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:06,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:15:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:06,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:06,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:15:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:06,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:06,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:06,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:06,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:06,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:06,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:06,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 00:15:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:06,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 00:15:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:06,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:15:06,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442483943] [2020-08-19 00:15:06,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:06,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:15:06,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516661166] [2020-08-19 00:15:06,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:15:06,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:06,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:15:06,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:15:06,213 INFO L87 Difference]: Start difference. First operand 387 states and 459 transitions. Second operand 9 states. [2020-08-19 00:15:06,555 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:07,583 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:07,832 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 00:15:08,109 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:08,384 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:09,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:09,713 INFO L93 Difference]: Finished difference Result 1214 states and 1597 transitions. [2020-08-19 00:15:09,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:15:09,714 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-08-19 00:15:09,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:09,719 INFO L225 Difference]: With dead ends: 1214 [2020-08-19 00:15:09,719 INFO L226 Difference]: Without dead ends: 855 [2020-08-19 00:15:09,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:15:09,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-08-19 00:15:09,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 733. [2020-08-19 00:15:09,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-08-19 00:15:09,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 874 transitions. [2020-08-19 00:15:09,860 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 874 transitions. Word has length 103 [2020-08-19 00:15:09,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:09,861 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 874 transitions. [2020-08-19 00:15:09,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:15:09,861 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 874 transitions. [2020-08-19 00:15:09,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-19 00:15:09,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:09,865 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:09,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:15:09,865 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:09,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:09,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1731736191, now seen corresponding path program 1 times [2020-08-19 00:15:09,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:09,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295751388] [2020-08-19 00:15:09,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:10,145 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:10,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:10,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:10,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:10,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:10,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:10,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:10,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:15:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:10,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:10,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:15:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:10,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:10,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:10,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:10,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:10,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:10,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:10,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 00:15:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:10,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 00:15:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:10,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:15:10,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295751388] [2020-08-19 00:15:10,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:10,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:15:10,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005902388] [2020-08-19 00:15:10,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:15:10,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:10,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:15:10,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:15:10,368 INFO L87 Difference]: Start difference. First operand 733 states and 874 transitions. Second operand 9 states. [2020-08-19 00:15:11,562 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:11,810 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:15:12,067 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:12,303 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:13,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:13,085 INFO L93 Difference]: Finished difference Result 1573 states and 2006 transitions. [2020-08-19 00:15:13,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:15:13,085 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-08-19 00:15:13,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:13,094 INFO L225 Difference]: With dead ends: 1573 [2020-08-19 00:15:13,094 INFO L226 Difference]: Without dead ends: 868 [2020-08-19 00:15:13,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:15:13,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2020-08-19 00:15:13,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 753. [2020-08-19 00:15:13,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-08-19 00:15:13,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 894 transitions. [2020-08-19 00:15:13,260 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 894 transitions. Word has length 103 [2020-08-19 00:15:13,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:13,260 INFO L479 AbstractCegarLoop]: Abstraction has 753 states and 894 transitions. [2020-08-19 00:15:13,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:15:13,261 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 894 transitions. [2020-08-19 00:15:13,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-19 00:15:13,264 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:13,264 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:13,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:15:13,264 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:13,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:13,265 INFO L82 PathProgramCache]: Analyzing trace with hash 513843263, now seen corresponding path program 1 times [2020-08-19 00:15:13,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:13,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447088006] [2020-08-19 00:15:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,533 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:13,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:15:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:15:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:13,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 00:15:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 00:15:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:13,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:15:13,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447088006] [2020-08-19 00:15:13,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:13,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 00:15:13,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179227365] [2020-08-19 00:15:13,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:15:13,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:13,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:15:13,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:15:13,715 INFO L87 Difference]: Start difference. First operand 753 states and 894 transitions. Second operand 11 states. [2020-08-19 00:15:14,159 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:14,408 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:14,643 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:15,453 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:15,711 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:15,955 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:16,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:16,752 INFO L93 Difference]: Finished difference Result 1392 states and 1738 transitions. [2020-08-19 00:15:16,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:15:16,753 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-08-19 00:15:16,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:16,758 INFO L225 Difference]: With dead ends: 1392 [2020-08-19 00:15:16,759 INFO L226 Difference]: Without dead ends: 667 [2020-08-19 00:15:16,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:15:16,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2020-08-19 00:15:16,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 590. [2020-08-19 00:15:16,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-08-19 00:15:16,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 686 transitions. [2020-08-19 00:15:16,868 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 686 transitions. Word has length 103 [2020-08-19 00:15:16,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:16,868 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 686 transitions. [2020-08-19 00:15:16,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:15:16,869 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 686 transitions. [2020-08-19 00:15:16,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-19 00:15:16,873 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:16,873 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:16,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:15:16,874 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:16,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:16,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1595809660, now seen corresponding path program 1 times [2020-08-19 00:15:16,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:16,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491199207] [2020-08-19 00:15:16,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,345 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:17,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:15:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:15:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-19 00:15:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 00:15:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 00:15:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:15:17,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491199207] [2020-08-19 00:15:17,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:15:17,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 00:15:17,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130684413] [2020-08-19 00:15:17,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:15:17,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:17,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:15:17,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:15:17,603 INFO L87 Difference]: Start difference. First operand 590 states and 686 transitions. Second operand 12 states. [2020-08-19 00:15:18,119 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:18,747 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:19,458 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:19,801 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:20,047 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:20,330 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:20,602 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:22,317 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:22,666 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:23,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:23,295 INFO L93 Difference]: Finished difference Result 1731 states and 2173 transitions. [2020-08-19 00:15:23,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 00:15:23,296 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2020-08-19 00:15:23,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:23,303 INFO L225 Difference]: With dead ends: 1731 [2020-08-19 00:15:23,303 INFO L226 Difference]: Without dead ends: 1345 [2020-08-19 00:15:23,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 00:15:23,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2020-08-19 00:15:23,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1225. [2020-08-19 00:15:23,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-08-19 00:15:23,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1427 transitions. [2020-08-19 00:15:23,484 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1427 transitions. Word has length 107 [2020-08-19 00:15:23,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:23,485 INFO L479 AbstractCegarLoop]: Abstraction has 1225 states and 1427 transitions. [2020-08-19 00:15:23,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:15:23,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1427 transitions. [2020-08-19 00:15:23,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-19 00:15:23,488 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:23,488 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:23,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:15:23,489 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:23,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:23,489 INFO L82 PathProgramCache]: Analyzing trace with hash 439174861, now seen corresponding path program 1 times [2020-08-19 00:15:23,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:23,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621228986] [2020-08-19 00:15:23,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,821 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:23,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:15:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:15:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:15:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:15:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:23,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 00:15:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:24,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:24,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-19 00:15:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:24,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 00:15:24,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:24,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:24,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 00:15:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:24,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 00:15:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:24,093 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-19 00:15:24,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621228986] [2020-08-19 00:15:24,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:15:24,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 00:15:24,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9733391] [2020-08-19 00:15:24,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 00:15:24,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:24,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 00:15:24,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:15:24,096 INFO L87 Difference]: Start difference. First operand 1225 states and 1427 transitions. Second operand 16 states. [2020-08-19 00:15:24,609 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:24,932 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 00:15:25,183 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 00:15:25,431 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 00:15:26,135 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:26,426 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:26,805 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:15:27,086 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:15:28,340 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:28,856 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:29,151 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:29,488 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:29,981 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:15:30,551 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:15:30,791 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:31,069 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:31,341 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:31,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:31,893 INFO L93 Difference]: Finished difference Result 2512 states and 3022 transitions. [2020-08-19 00:15:31,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-19 00:15:31,893 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 151 [2020-08-19 00:15:31,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:31,901 INFO L225 Difference]: With dead ends: 2512 [2020-08-19 00:15:31,901 INFO L226 Difference]: Without dead ends: 1485 [2020-08-19 00:15:31,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=548, Invalid=2002, Unknown=0, NotChecked=0, Total=2550 [2020-08-19 00:15:31,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2020-08-19 00:15:32,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1337. [2020-08-19 00:15:32,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1337 states. [2020-08-19 00:15:32,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1535 transitions. [2020-08-19 00:15:32,182 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1535 transitions. Word has length 151 [2020-08-19 00:15:32,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:32,183 INFO L479 AbstractCegarLoop]: Abstraction has 1337 states and 1535 transitions. [2020-08-19 00:15:32,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 00:15:32,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1535 transitions. [2020-08-19 00:15:32,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-08-19 00:15:32,195 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:32,196 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 00:15:32,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:15:32,196 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:32,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:32,197 INFO L82 PathProgramCache]: Analyzing trace with hash -31492180, now seen corresponding path program 1 times [2020-08-19 00:15:32,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:32,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217754697] [2020-08-19 00:15:32,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,505 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:32,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:15:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:15:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:15:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:15:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 00:15:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 00:15:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-19 00:15:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 00:15:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-19 00:15:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-08-19 00:15:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-19 00:15:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-08-19 00:15:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-19 00:15:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 83 proven. 29 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-08-19 00:15:32,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217754697] [2020-08-19 00:15:32,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:15:32,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 00:15:32,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890184448] [2020-08-19 00:15:32,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 00:15:32,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:32,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 00:15:33,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:15:33,000 INFO L87 Difference]: Start difference. First operand 1337 states and 1535 transitions. Second operand 16 states. [2020-08-19 00:15:34,290 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:15:34,573 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:34,838 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:35,093 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:36,382 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:38,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:38,237 INFO L93 Difference]: Finished difference Result 3772 states and 4541 transitions. [2020-08-19 00:15:38,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-19 00:15:38,238 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 274 [2020-08-19 00:15:38,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:38,252 INFO L225 Difference]: With dead ends: 3772 [2020-08-19 00:15:38,252 INFO L226 Difference]: Without dead ends: 2204 [2020-08-19 00:15:38,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2020-08-19 00:15:38,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2020-08-19 00:15:38,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 1823. [2020-08-19 00:15:38,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1823 states. [2020-08-19 00:15:38,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2126 transitions. [2020-08-19 00:15:38,617 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2126 transitions. Word has length 274 [2020-08-19 00:15:38,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:38,617 INFO L479 AbstractCegarLoop]: Abstraction has 1823 states and 2126 transitions. [2020-08-19 00:15:38,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 00:15:38,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2126 transitions. [2020-08-19 00:15:38,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-08-19 00:15:38,626 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:38,626 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:15:38,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:15:38,627 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:38,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:38,627 INFO L82 PathProgramCache]: Analyzing trace with hash -821094681, now seen corresponding path program 1 times [2020-08-19 00:15:38,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:38,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656783568] [2020-08-19 00:15:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:38,997 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:38,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:15:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:15:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:15:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:15:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 00:15:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 00:15:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:15:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-19 00:15:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 00:15:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-08-19 00:15:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 00:15:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-08-19 00:15:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-08-19 00:15:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-08-19 00:15:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 90 proven. 33 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-08-19 00:15:39,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656783568] [2020-08-19 00:15:39,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:15:39,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 00:15:39,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349224835] [2020-08-19 00:15:39,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 00:15:39,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:39,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 00:15:39,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-19 00:15:39,413 INFO L87 Difference]: Start difference. First operand 1823 states and 2126 transitions. Second operand 17 states. [2020-08-19 00:15:40,262 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:40,599 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:40,875 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:41,128 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:15:41,868 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:42,860 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:43,151 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:43,610 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:15:44,219 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:44,759 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:45,029 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:15:45,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:15:45,708 INFO L93 Difference]: Finished difference Result 3474 states and 4131 transitions. [2020-08-19 00:15:45,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 00:15:45,709 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 280 [2020-08-19 00:15:45,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:15:45,722 INFO L225 Difference]: With dead ends: 3474 [2020-08-19 00:15:45,722 INFO L226 Difference]: Without dead ends: 1872 [2020-08-19 00:15:45,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=385, Invalid=1507, Unknown=0, NotChecked=0, Total=1892 [2020-08-19 00:15:45,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2020-08-19 00:15:46,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1772. [2020-08-19 00:15:46,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1772 states. [2020-08-19 00:15:46,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1772 states to 1772 states and 2039 transitions. [2020-08-19 00:15:46,042 INFO L78 Accepts]: Start accepts. Automaton has 1772 states and 2039 transitions. Word has length 280 [2020-08-19 00:15:46,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:15:46,042 INFO L479 AbstractCegarLoop]: Abstraction has 1772 states and 2039 transitions. [2020-08-19 00:15:46,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 00:15:46,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1772 states and 2039 transitions. [2020-08-19 00:15:46,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-08-19 00:15:46,052 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:15:46,052 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 00:15:46,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 00:15:46,053 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:15:46,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:15:46,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1546174684, now seen corresponding path program 1 times [2020-08-19 00:15:46,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:15:46,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635198528] [2020-08-19 00:15:46,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:15:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,374 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:15:46,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:15:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:15:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:15:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 00:15:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 00:15:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:15:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 00:15:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 00:15:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:15:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-19 00:15:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:15:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 00:15:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:15:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-08-19 00:15:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-08-19 00:15:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:15:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-08-19 00:15:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:15:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:15:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:15:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:15:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-19 00:15:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2020-08-19 00:15:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:15:46,629 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-08-19 00:15:46,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635198528] [2020-08-19 00:15:46,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:15:46,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 00:15:46,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154083749] [2020-08-19 00:15:46,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:15:46,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:15:46,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:15:46,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:15:46,635 INFO L87 Difference]: Start difference. First operand 1772 states and 2039 transitions. Second operand 9 states. [2020-08-19 00:15:47,491 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 189