/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=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:45:50,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:45:50,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:45:50,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:45:50,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:45:50,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:45:50,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:45:50,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:45:50,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:45:50,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:45:50,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:45:50,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:45:50,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:45:50,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:45:50,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:45:50,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:45:50,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:45:50,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:45:50,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:45:50,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:45:50,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:45:50,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:45:50,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:45:50,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:45:50,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:45:50,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:45:50,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:45:50,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:45:50,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:45:50,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:45:50,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:45:50,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:45:50,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:45:50,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:45:50,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:45:50,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:45:50,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:45:50,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:45:50,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:45:50,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:45:50,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:45:50,972 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 12:45:51,010 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:45:51,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:45:51,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:45:51,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:45:51,013 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:45:51,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:45:51,014 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:45:51,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:45:51,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:45:51,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:45:51,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:45:51,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:45:51,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:45:51,016 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:45:51,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:45:51,017 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:45:51,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:45:51,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:45:51,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:45:51,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:45:51,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:45:51,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:45:51,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:45:51,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:45:51,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:45:51,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:45:51,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:45:51,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:45:51,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:45:51,020 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=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 12:45:51,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:45:51,356 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:45:51,360 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:45:51,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:45:51,361 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:45:51,362 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c [2020-08-18 12:45:51,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b438db509/43f16c230a214d79a6a4c6a2a7e538dc/FLAGc2c37ae65 [2020-08-18 12:45:51,927 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:45:51,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_productSimulator.cil.c [2020-08-18 12:45:51,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b438db509/43f16c230a214d79a6a4c6a2a7e538dc/FLAGc2c37ae65 [2020-08-18 12:45:52,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b438db509/43f16c230a214d79a6a4c6a2a7e538dc [2020-08-18 12:45:52,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:45:52,273 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:45:52,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:45:52,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:45:52,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:45:52,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:45:52" (1/1) ... [2020-08-18 12:45:52,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afe831a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:45:52, skipping insertion in model container [2020-08-18 12:45:52,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:45:52" (1/1) ... [2020-08-18 12:45:52,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:45:52,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:45:52,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:45:52,895 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:45:52,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:45:53,034 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:45:53,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:45:53 WrapperNode [2020-08-18 12:45:53,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:45:53,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:45:53,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:45:53,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:45:53,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:45:53" (1/1) ... [2020-08-18 12:45:53,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:45:53" (1/1) ... [2020-08-18 12:45:53,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:45:53" (1/1) ... [2020-08-18 12:45:53,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:45:53" (1/1) ... [2020-08-18 12:45:53,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:45:53" (1/1) ... [2020-08-18 12:45:53,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:45:53" (1/1) ... [2020-08-18 12:45:53,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:45:53" (1/1) ... [2020-08-18 12:45:53,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:45:53,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:45:53,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:45:53,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:45:53,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:45:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:45:53,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:45:53,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:45:53,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 12:45:53,219 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 12:45:53,219 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 12:45:53,219 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 12:45:53,219 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 12:45:53,219 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 12:45:53,219 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 12:45:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 12:45:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 12:45:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 12:45:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-18 12:45:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-18 12:45:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-18 12:45:53,221 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-18 12:45:53,221 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-18 12:45:53,221 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-18 12:45:53,221 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 12:45:53,221 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-18 12:45:53,221 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-18 12:45:53,221 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 12:45:53,222 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 12:45:53,222 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 12:45:53,222 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 12:45:53,222 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 12:45:53,222 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 12:45:53,222 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 12:45:53,222 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 12:45:53,223 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 12:45:53,223 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 12:45:53,223 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 12:45:53,223 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 12:45:53,223 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 12:45:53,223 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:45:53,224 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 12:45:53,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 12:45:53,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 12:45:53,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 12:45:53,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 12:45:53,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 12:45:53,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 12:45:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 12:45:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 12:45:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 12:45:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 12:45:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 12:45:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 12:45:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 12:45:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:45:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:45:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 12:45:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 12:45:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 12:45:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 12:45:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 12:45:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 12:45:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 12:45:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 12:45:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 12:45:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:45:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 12:45:53,227 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 12:45:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 12:45:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 12:45:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 12:45:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 12:45:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 12:45:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 12:45:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 12:45:53,229 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-18 12:45:53,229 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 12:45:53,229 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-18 12:45:53,229 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-18 12:45:53,229 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 12:45:53,229 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-18 12:45:53,229 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-18 12:45:53,230 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 12:45:53,230 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-18 12:45:53,230 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-18 12:45:53,230 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-18 12:45:53,230 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 12:45:53,230 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 12:45:53,230 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 12:45:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 12:45:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 12:45:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 12:45:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 12:45:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 12:45:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 12:45:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:45:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 12:45:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 12:45:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 12:45:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 12:45:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 12:45:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 12:45:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 12:45:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:45:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 12:45:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 12:45:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:45:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 12:45:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 12:45:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:45:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 12:45:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 12:45:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 12:45:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 12:45:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:45:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 12:45:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:45:54,352 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:45:54,353 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 12:45:54,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:45:54 BoogieIcfgContainer [2020-08-18 12:45:54,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:45:54,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:45:54,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:45:54,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:45:54,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:45:52" (1/3) ... [2020-08-18 12:45:54,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698b0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:45:54, skipping insertion in model container [2020-08-18 12:45:54,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:45:53" (2/3) ... [2020-08-18 12:45:54,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698b0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:45:54, skipping insertion in model container [2020-08-18 12:45:54,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:45:54" (3/3) ... [2020-08-18 12:45:54,368 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_productSimulator.cil.c [2020-08-18 12:45:54,379 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:45:54,387 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:45:54,403 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:45:54,431 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:45:54,431 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:45:54,432 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:45:54,432 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:45:54,432 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:45:54,432 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:45:54,433 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:45:54,433 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:45:54,457 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states. [2020-08-18 12:45:54,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 12:45:54,471 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:45:54,472 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:45:54,473 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:45:54,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:45:54,480 INFO L82 PathProgramCache]: Analyzing trace with hash 2065144369, now seen corresponding path program 1 times [2020-08-18 12:45:54,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:45:54,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543739219] [2020-08-18 12:45:54,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:45:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:55,387 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 12:45:55,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:45:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:55,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:45:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:55,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:45:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:55,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:45:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:55,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:45:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:55,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 12:45:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:55,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:45:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:55,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:45:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:55,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:45:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:55,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:45:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:55,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:45:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:55,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 12:45:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:55,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 12:45:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:55,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 12:45:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:55,568 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 12:45:55,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543739219] [2020-08-18 12:45:55,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:45:55,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:45:55,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849343060] [2020-08-18 12:45:55,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:45:55,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:45:55,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:45:55,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:45:55,594 INFO L87 Difference]: Start difference. First operand 247 states. Second operand 6 states. [2020-08-18 12:45:58,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:45:58,062 INFO L93 Difference]: Finished difference Result 442 states and 585 transitions. [2020-08-18 12:45:58,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 12:45:58,064 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-08-18 12:45:58,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:45:58,082 INFO L225 Difference]: With dead ends: 442 [2020-08-18 12:45:58,082 INFO L226 Difference]: Without dead ends: 256 [2020-08-18 12:45:58,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:45:58,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-08-18 12:45:58,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 204. [2020-08-18 12:45:58,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-08-18 12:45:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 251 transitions. [2020-08-18 12:45:58,274 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 251 transitions. Word has length 83 [2020-08-18 12:45:58,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:45:58,275 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 251 transitions. [2020-08-18 12:45:58,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:45:58,275 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 251 transitions. [2020-08-18 12:45:58,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 12:45:58,289 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:45:58,289 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:45:58,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:45:58,290 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:45:58,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:45:58,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1458323181, now seen corresponding path program 1 times [2020-08-18 12:45:58,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:45:58,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739586850] [2020-08-18 12:45:58,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:45:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:58,785 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 12:45:58,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:45:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:58,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:45:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:58,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:45:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:58,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:45:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:58,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:45:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:58,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 12:45:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:58,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:45:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:58,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:45:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:58,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:45:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:58,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:45:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:58,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:45:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:58,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 12:45:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:58,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 12:45:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:58,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 12:45:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:45:58,888 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 12:45:58,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739586850] [2020-08-18 12:45:58,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:45:58,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 12:45:58,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744643490] [2020-08-18 12:45:58,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 12:45:58,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:45:58,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 12:45:58,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:45:58,893 INFO L87 Difference]: Start difference. First operand 204 states and 251 transitions. Second operand 7 states. [2020-08-18 12:45:59,726 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-18 12:46:01,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:46:01,539 INFO L93 Difference]: Finished difference Result 375 states and 480 transitions. [2020-08-18 12:46:01,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 12:46:01,544 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2020-08-18 12:46:01,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:46:01,549 INFO L225 Difference]: With dead ends: 375 [2020-08-18 12:46:01,549 INFO L226 Difference]: Without dead ends: 246 [2020-08-18 12:46:01,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-08-18 12:46:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-08-18 12:46:01,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 195. [2020-08-18 12:46:01,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-18 12:46:01,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 239 transitions. [2020-08-18 12:46:01,602 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 239 transitions. Word has length 84 [2020-08-18 12:46:01,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:46:01,602 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 239 transitions. [2020-08-18 12:46:01,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 12:46:01,603 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 239 transitions. [2020-08-18 12:46:01,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-18 12:46:01,604 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:46:01,604 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:46:01,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:46:01,605 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:46:01,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:46:01,605 INFO L82 PathProgramCache]: Analyzing trace with hash 481269972, now seen corresponding path program 1 times [2020-08-18 12:46:01,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:46:01,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080595661] [2020-08-18 12:46:01,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:46:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:02,076 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 12:46:02,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:46:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:02,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:46:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:02,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:46:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:02,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:02,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:46:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:02,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 12:46:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:02,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:46:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:02,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:46:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:02,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:46:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:02,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:46:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:02,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:46:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:02,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 12:46:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:02,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 12:46:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:02,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 12:46:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 12:46:02,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080595661] [2020-08-18 12:46:02,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:46:02,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 12:46:02,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581905955] [2020-08-18 12:46:02,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 12:46:02,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:46:02,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 12:46:02,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-08-18 12:46:02,315 INFO L87 Difference]: Start difference. First operand 195 states and 239 transitions. Second operand 13 states. [2020-08-18 12:46:02,965 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 12:46:03,693 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 214 [2020-08-18 12:46:04,549 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 216 [2020-08-18 12:46:05,835 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 12:46:06,232 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-18 12:46:10,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:46:10,184 INFO L93 Difference]: Finished difference Result 633 states and 818 transitions. [2020-08-18 12:46:10,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-18 12:46:10,185 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2020-08-18 12:46:10,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:46:10,191 INFO L225 Difference]: With dead ends: 633 [2020-08-18 12:46:10,191 INFO L226 Difference]: Without dead ends: 483 [2020-08-18 12:46:10,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2020-08-18 12:46:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-08-18 12:46:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 386. [2020-08-18 12:46:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-08-18 12:46:10,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 486 transitions. [2020-08-18 12:46:10,336 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 486 transitions. Word has length 89 [2020-08-18 12:46:10,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:46:10,336 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 486 transitions. [2020-08-18 12:46:10,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 12:46:10,337 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 486 transitions. [2020-08-18 12:46:10,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-18 12:46:10,340 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:46:10,340 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:46:10,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:46:10,341 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:46:10,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:46:10,341 INFO L82 PathProgramCache]: Analyzing trace with hash -678987685, now seen corresponding path program 1 times [2020-08-18 12:46:10,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:46:10,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154497437] [2020-08-18 12:46:10,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:46:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:10,709 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 12:46:10,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:46:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:10,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:46:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:10,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:46:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:10,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:10,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:46:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:10,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 12:46:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:10,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:46:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:10,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:46:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:10,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:46:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:10,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:46:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:10,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:46:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:10,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 12:46:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:10,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 12:46:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:10,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 12:46:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:10,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 12:46:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 12:46:10,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154497437] [2020-08-18 12:46:10,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:46:10,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 12:46:10,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269437968] [2020-08-18 12:46:10,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 12:46:10,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:46:10,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 12:46:10,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:46:10,906 INFO L87 Difference]: Start difference. First operand 386 states and 486 transitions. Second operand 11 states. [2020-08-18 12:46:11,489 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 12:46:13,283 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-18 12:46:13,812 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-18 12:46:14,113 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 12:46:14,487 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-18 12:46:17,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:46:17,544 INFO L93 Difference]: Finished difference Result 1239 states and 1662 transitions. [2020-08-18 12:46:17,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 12:46:17,545 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 95 [2020-08-18 12:46:17,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:46:17,553 INFO L225 Difference]: With dead ends: 1239 [2020-08-18 12:46:17,554 INFO L226 Difference]: Without dead ends: 898 [2020-08-18 12:46:17,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=229, Invalid=583, Unknown=0, NotChecked=0, Total=812 [2020-08-18 12:46:17,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-08-18 12:46:17,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 703. [2020-08-18 12:46:17,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-18 12:46:17,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 890 transitions. [2020-08-18 12:46:17,730 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 890 transitions. Word has length 95 [2020-08-18 12:46:17,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:46:17,731 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 890 transitions. [2020-08-18 12:46:17,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 12:46:17,731 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 890 transitions. [2020-08-18 12:46:17,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-18 12:46:17,735 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:46:17,735 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:46:17,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:46:17,735 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:46:17,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:46:17,736 INFO L82 PathProgramCache]: Analyzing trace with hash -319049537, now seen corresponding path program 1 times [2020-08-18 12:46:17,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:46:17,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837918949] [2020-08-18 12:46:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:46:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:18,089 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 12:46:18,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:46:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:18,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:46:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:18,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:46:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:18,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:18,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:46:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:18,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 12:46:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:18,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:46:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:18,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:46:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:18,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:46:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:18,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:46:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:18,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:46:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:18,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 12:46:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:18,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 12:46:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:18,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 12:46:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:18,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 12:46:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:18,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 12:46:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 12:46:18,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837918949] [2020-08-18 12:46:18,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:46:18,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 12:46:18,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348925424] [2020-08-18 12:46:18,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 12:46:18,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:46:18,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 12:46:18,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:46:18,299 INFO L87 Difference]: Start difference. First operand 703 states and 890 transitions. Second operand 12 states. [2020-08-18 12:46:19,084 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 12:46:20,984 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-18 12:46:21,323 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-18 12:46:21,678 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-18 12:46:22,861 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 12:46:25,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:46:25,541 INFO L93 Difference]: Finished difference Result 1988 states and 2808 transitions. [2020-08-18 12:46:25,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 12:46:25,542 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-08-18 12:46:25,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:46:25,551 INFO L225 Difference]: With dead ends: 1988 [2020-08-18 12:46:25,552 INFO L226 Difference]: Without dead ends: 1330 [2020-08-18 12:46:25,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=346, Invalid=914, Unknown=0, NotChecked=0, Total=1260 [2020-08-18 12:46:25,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2020-08-18 12:46:25,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1102. [2020-08-18 12:46:25,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-18 12:46:25,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1421 transitions. [2020-08-18 12:46:25,839 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1421 transitions. Word has length 99 [2020-08-18 12:46:25,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:46:25,840 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1421 transitions. [2020-08-18 12:46:25,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 12:46:25,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1421 transitions. [2020-08-18 12:46:25,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-18 12:46:25,843 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:46:25,844 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:46:25,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:46:25,844 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:46:25,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:46:25,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1144263416, now seen corresponding path program 1 times [2020-08-18 12:46:25,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:46:25,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442374800] [2020-08-18 12:46:25,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:46:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,162 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 12:46:26,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:46:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:46:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:46:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:46:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 12:46:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:46:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:46:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:46:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:46:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:46:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 12:46:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 12:46:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 12:46:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:46:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:46:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 12:46:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 12:46:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:26,433 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 12:46:26,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442374800] [2020-08-18 12:46:26,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:46:26,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 12:46:26,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731570711] [2020-08-18 12:46:26,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 12:46:26,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:46:26,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 12:46:26,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:46:26,436 INFO L87 Difference]: Start difference. First operand 1102 states and 1421 transitions. Second operand 12 states. [2020-08-18 12:46:28,797 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-18 12:46:29,106 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-08-18 12:46:29,414 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-18 12:46:29,772 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 214 [2020-08-18 12:46:31,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:46:31,863 INFO L93 Difference]: Finished difference Result 2481 states and 3557 transitions. [2020-08-18 12:46:31,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 12:46:31,864 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 132 [2020-08-18 12:46:31,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:46:31,875 INFO L225 Difference]: With dead ends: 2481 [2020-08-18 12:46:31,875 INFO L226 Difference]: Without dead ends: 1424 [2020-08-18 12:46:31,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2020-08-18 12:46:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2020-08-18 12:46:32,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1128. [2020-08-18 12:46:32,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1128 states. [2020-08-18 12:46:32,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1449 transitions. [2020-08-18 12:46:32,251 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1449 transitions. Word has length 132 [2020-08-18 12:46:32,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:46:32,253 INFO L479 AbstractCegarLoop]: Abstraction has 1128 states and 1449 transitions. [2020-08-18 12:46:32,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 12:46:32,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1449 transitions. [2020-08-18 12:46:32,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-18 12:46:32,261 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:46:32,261 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:46:32,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:46:32,262 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:46:32,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:46:32,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1305336714, now seen corresponding path program 1 times [2020-08-18 12:46:32,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:46:32,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444830480] [2020-08-18 12:46:32,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:46:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,613 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 12:46:32,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:46:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:46:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:46:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:46:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 12:46:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:46:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:46:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:46:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:46:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:46:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 12:46:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 12:46:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 12:46:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:46:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:46:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 12:46:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 12:46:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:32,900 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 12:46:32,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444830480] [2020-08-18 12:46:32,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:46:32,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-08-18 12:46:32,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156905523] [2020-08-18 12:46:32,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 12:46:32,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:46:32,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 12:46:32,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-08-18 12:46:32,913 INFO L87 Difference]: Start difference. First operand 1128 states and 1449 transitions. Second operand 15 states. [2020-08-18 12:46:34,230 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 12:46:34,747 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-18 12:46:36,151 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-18 12:46:36,526 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-18 12:46:36,874 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-18 12:46:39,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:46:39,187 INFO L93 Difference]: Finished difference Result 2527 states and 3605 transitions. [2020-08-18 12:46:39,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-18 12:46:39,188 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 132 [2020-08-18 12:46:39,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:46:39,198 INFO L225 Difference]: With dead ends: 2527 [2020-08-18 12:46:39,199 INFO L226 Difference]: Without dead ends: 1444 [2020-08-18 12:46:39,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=236, Invalid=756, Unknown=0, NotChecked=0, Total=992 [2020-08-18 12:46:39,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2020-08-18 12:46:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1144. [2020-08-18 12:46:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1144 states. [2020-08-18 12:46:39,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1465 transitions. [2020-08-18 12:46:39,442 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1465 transitions. Word has length 132 [2020-08-18 12:46:39,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:46:39,443 INFO L479 AbstractCegarLoop]: Abstraction has 1144 states and 1465 transitions. [2020-08-18 12:46:39,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 12:46:39,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1465 transitions. [2020-08-18 12:46:39,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-18 12:46:39,447 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:46:39,447 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:46:39,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 12:46:39,448 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:46:39,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:46:39,448 INFO L82 PathProgramCache]: Analyzing trace with hash 856640075, now seen corresponding path program 1 times [2020-08-18 12:46:39,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:46:39,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596068019] [2020-08-18 12:46:39,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:46:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:39,804 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 12:46:39,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:46:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:39,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:46:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:39,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:46:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:39,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:39,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:46:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:39,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 12:46:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:39,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:46:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:39,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:46:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:39,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:46:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:39,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:46:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:39,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:46:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:39,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 12:46:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:39,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 12:46:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:39,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 12:46:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:39,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:39,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:39,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:40,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:46:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:40,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:40,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:46:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:40,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:40,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 12:46:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:40,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-18 12:46:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 12:46:40,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596068019] [2020-08-18 12:46:40,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:46:40,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 12:46:40,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799108328] [2020-08-18 12:46:40,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:46:40,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:46:40,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:46:40,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:46:40,097 INFO L87 Difference]: Start difference. First operand 1144 states and 1465 transitions. Second operand 10 states. [2020-08-18 12:46:40,683 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 12:46:41,644 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 12:46:46,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:46:46,485 INFO L93 Difference]: Finished difference Result 3668 states and 5255 transitions. [2020-08-18 12:46:46,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 12:46:46,486 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-18 12:46:46,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:46:46,510 INFO L225 Difference]: With dead ends: 3668 [2020-08-18 12:46:46,510 INFO L226 Difference]: Without dead ends: 2569 [2020-08-18 12:46:46,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=266, Invalid=726, Unknown=0, NotChecked=0, Total=992 [2020-08-18 12:46:46,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2020-08-18 12:46:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 2160. [2020-08-18 12:46:47,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2160 states. [2020-08-18 12:46:47,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2160 states to 2160 states and 2823 transitions. [2020-08-18 12:46:47,127 INFO L78 Accepts]: Start accepts. Automaton has 2160 states and 2823 transitions. Word has length 132 [2020-08-18 12:46:47,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:46:47,128 INFO L479 AbstractCegarLoop]: Abstraction has 2160 states and 2823 transitions. [2020-08-18 12:46:47,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 12:46:47,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2160 states and 2823 transitions. [2020-08-18 12:46:47,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-18 12:46:47,135 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:46:47,136 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:46:47,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 12:46:47,136 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:46:47,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:46:47,137 INFO L82 PathProgramCache]: Analyzing trace with hash 2033559269, now seen corresponding path program 1 times [2020-08-18 12:46:47,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:46:47,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653336533] [2020-08-18 12:46:47,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:46:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,493 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 12:46:47,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:46:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:46:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:46:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:46:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 12:46:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:46:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:46:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 12:46:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:46:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:46:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 12:46:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 12:46:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 12:46:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 12:46:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:46:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:46:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:46:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-18 12:46:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-18 12:46:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:46:47,679 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 12:46:47,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653336533] [2020-08-18 12:46:47,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:46:47,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 12:46:47,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2947277] [2020-08-18 12:46:47,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 12:46:47,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:46:47,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 12:46:47,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:46:47,682 INFO L87 Difference]: Start difference. First operand 2160 states and 2823 transitions. Second operand 10 states. [2020-08-18 12:46:48,622 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 213