/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=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:56:46,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:56:46,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:56:46,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:56:46,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:56:46,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:56:46,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:56:46,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:56:46,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:56:46,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:56:46,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:56:46,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:56:46,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:56:46,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:56:46,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:56:46,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:56:46,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:56:46,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:56:46,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:56:46,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:56:46,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:56:46,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:56:46,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:56:46,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:56:46,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:56:46,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:56:46,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:56:46,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:56:46,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:56:46,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:56:46,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:56:46,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:56:46,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:56:46,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:56:46,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:56:46,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:56:46,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:56:46,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:56:46,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:56:46,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:56:46,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:56:46,953 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 20:56:47,001 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:56:47,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:56:47,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:56:47,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:56:47,004 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:56:47,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:56:47,004 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:56:47,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:56:47,005 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:56:47,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:56:47,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:56:47,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:56:47,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:56:47,007 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:56:47,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:56:47,008 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:56:47,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:56:47,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:56:47,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:56:47,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:56:47,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:56:47,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:56:47,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:56:47,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:56:47,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:56:47,010 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:56:47,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:56:47,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:56:47,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:56:47,011 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=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 20:56:47,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:56:47,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:56:47,387 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:56:47,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:56:47,389 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:56:47,390 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-18 20:56:47,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d8c74b6a/e2715591372742ad8b9a46849b615dce/FLAGea77fb6b2 [2020-08-18 20:56:48,019 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:56:48,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2020-08-18 20:56:48,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d8c74b6a/e2715591372742ad8b9a46849b615dce/FLAGea77fb6b2 [2020-08-18 20:56:48,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d8c74b6a/e2715591372742ad8b9a46849b615dce [2020-08-18 20:56:48,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:56:48,359 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:56:48,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:56:48,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:56:48,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:56:48,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:56:48" (1/1) ... [2020-08-18 20:56:48,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b54cc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:48, skipping insertion in model container [2020-08-18 20:56:48,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:56:48" (1/1) ... [2020-08-18 20:56:48,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:56:48,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:56:48,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:56:48,890 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:56:48,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:56:49,035 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:56:49,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:49 WrapperNode [2020-08-18 20:56:49,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:56:49,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:56:49,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:56:49,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:56:49,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:49" (1/1) ... [2020-08-18 20:56:49,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:49" (1/1) ... [2020-08-18 20:56:49,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:49" (1/1) ... [2020-08-18 20:56:49,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:49" (1/1) ... [2020-08-18 20:56:49,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:49" (1/1) ... [2020-08-18 20:56:49,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:49" (1/1) ... [2020-08-18 20:56:49,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:49" (1/1) ... [2020-08-18 20:56:49,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:56:49,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:56:49,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:56:49,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:56:49,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:49" (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 20:56:49,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:56:49,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:56:49,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:56:49,202 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:56:49,202 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:56:49,202 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:56:49,202 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:56:49,202 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:56:49,203 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:56:49,203 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:56:49,203 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 20:56:49,203 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:56:49,203 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:56:49,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:56:49,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:56:49,204 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:56:49,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:56:49,204 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:56:49,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 20:56:49,205 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:56:49,205 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:56:49,205 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:56:49,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:56:49,206 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:56:49,206 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:56:49,206 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:56:49,206 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:56:49,206 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:56:49,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:56:49,207 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:56:49,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:56:49,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:56:49,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:56:49,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:56:49,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:56:49,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:56:49,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:56:49,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:56:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:56:49,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:56:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:56:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:56:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:56:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:56:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:56:49,209 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:56:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:56:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:56:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:56:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:56:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:56:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:56:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:56:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:56:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 20:56:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:56:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:56:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:56:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 20:56:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:56:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:56:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:56:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:56:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:56:49,212 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:56:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:56:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:56:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:56:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:56:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:56:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:56:49,213 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:56:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:56:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:56:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:56:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:56:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:56:49,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:56:49,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:56:49,215 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:56:49,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:56:49,215 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:56:49,215 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:56:49,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:56:49,216 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:56:49,216 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:56:49,216 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:56:49,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:56:49,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:56:49,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:56:50,267 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:56:50,267 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:56:50,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:56:50 BoogieIcfgContainer [2020-08-18 20:56:50,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:56:50,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:56:50,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:56:50,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:56:50,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:56:48" (1/3) ... [2020-08-18 20:56:50,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d434e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:56:50, skipping insertion in model container [2020-08-18 20:56:50,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:56:49" (2/3) ... [2020-08-18 20:56:50,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d434e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:56:50, skipping insertion in model container [2020-08-18 20:56:50,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:56:50" (3/3) ... [2020-08-18 20:56:50,285 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product41.cil.c [2020-08-18 20:56:50,295 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:56:50,306 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:56:50,320 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:56:50,347 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:56:50,347 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:56:50,348 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:56:50,348 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:56:50,348 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:56:50,348 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:56:50,348 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:56:50,348 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:56:50,370 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-18 20:56:50,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:56:50,381 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:50,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:50,383 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:50,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:50,390 INFO L82 PathProgramCache]: Analyzing trace with hash 177325019, now seen corresponding path program 1 times [2020-08-18 20:56:50,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:50,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090194986] [2020-08-18 20:56:50,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:51,050 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:56:51,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:51,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:51,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:51,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:51,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:51,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:56:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:51,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:56:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:51,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:56:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:51,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090194986] [2020-08-18 20:56:51,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:51,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:56:51,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354919815] [2020-08-18 20:56:51,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:56:51,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:51,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:56:51,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:56:51,206 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-18 20:56:52,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:52,325 INFO L93 Difference]: Finished difference Result 287 states and 375 transitions. [2020-08-18 20:56:52,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:56:52,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 20:56:52,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:52,345 INFO L225 Difference]: With dead ends: 287 [2020-08-18 20:56:52,345 INFO L226 Difference]: Without dead ends: 155 [2020-08-18 20:56:52,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:56:52,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-18 20:56:52,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 123. [2020-08-18 20:56:52,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 20:56:52,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2020-08-18 20:56:52,460 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 52 [2020-08-18 20:56:52,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:52,461 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2020-08-18 20:56:52,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:56:52,461 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2020-08-18 20:56:52,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 20:56:52,466 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:52,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:52,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:56:52,466 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:52,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:52,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1842882407, now seen corresponding path program 1 times [2020-08-18 20:56:52,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:52,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209268886] [2020-08-18 20:56:52,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:52,831 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:56:52,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:52,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:52,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:52,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:52,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:52,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:56:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:52,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:56:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:52,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:56:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:52,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:52,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209268886] [2020-08-18 20:56:52,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:52,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:56:52,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341444984] [2020-08-18 20:56:52,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:56:52,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:52,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:56:52,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:56:52,879 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand 4 states. [2020-08-18 20:56:53,338 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:56:54,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:54,105 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2020-08-18 20:56:54,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:56:54,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 20:56:54,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:54,109 INFO L225 Difference]: With dead ends: 220 [2020-08-18 20:56:54,109 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 20:56:54,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:56:54,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 20:56:54,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-18 20:56:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-18 20:56:54,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-08-18 20:56:54,146 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 53 [2020-08-18 20:56:54,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:54,147 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-08-18 20:56:54,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:56:54,147 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-08-18 20:56:54,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-18 20:56:54,149 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:54,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:54,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:56:54,150 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:54,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:54,150 INFO L82 PathProgramCache]: Analyzing trace with hash 774651483, now seen corresponding path program 1 times [2020-08-18 20:56:54,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:54,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881581675] [2020-08-18 20:56:54,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:54,509 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:56:54,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:54,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:54,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:54,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:54,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:54,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:56:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:54,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:56:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:54,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 20:56:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:54,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881581675] [2020-08-18 20:56:54,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:54,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:56:54,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588053267] [2020-08-18 20:56:54,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:56:54,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:54,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:56:54,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:56:54,633 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 8 states. [2020-08-18 20:56:55,037 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:56:55,332 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:55,592 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:55,813 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:56:56,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:56,893 INFO L93 Difference]: Finished difference Result 229 states and 280 transitions. [2020-08-18 20:56:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:56:56,895 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-18 20:56:56,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:56,898 INFO L225 Difference]: With dead ends: 229 [2020-08-18 20:56:56,898 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 20:56:56,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:56:56,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 20:56:56,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-08-18 20:56:56,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-18 20:56:56,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-08-18 20:56:56,932 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 57 [2020-08-18 20:56:56,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:56,932 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-08-18 20:56:56,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:56:56,933 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-08-18 20:56:56,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 20:56:56,934 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:56,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:56,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:56:56,935 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:56,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:56,935 INFO L82 PathProgramCache]: Analyzing trace with hash -771193848, now seen corresponding path program 1 times [2020-08-18 20:56:56,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:56,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246033604] [2020-08-18 20:56:56,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:57,194 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:56:57,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:57,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:57,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:57,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:57,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:57,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:56:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:57,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:57,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:56:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:57,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 20:56:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:57,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 20:56:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:57,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:57,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246033604] [2020-08-18 20:56:57,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:57,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:56:57,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039853915] [2020-08-18 20:56:57,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:56:57,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:57,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:56:57,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:56:57,299 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 6 states. [2020-08-18 20:56:57,651 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:56:58,732 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:56:59,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:56:59,305 INFO L93 Difference]: Finished difference Result 324 states and 398 transitions. [2020-08-18 20:56:59,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:56:59,306 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 20:56:59,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:56:59,309 INFO L225 Difference]: With dead ends: 324 [2020-08-18 20:56:59,309 INFO L226 Difference]: Without dead ends: 234 [2020-08-18 20:56:59,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:56:59,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-18 20:56:59,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 193. [2020-08-18 20:56:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-08-18 20:56:59,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 222 transitions. [2020-08-18 20:56:59,355 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 222 transitions. Word has length 65 [2020-08-18 20:56:59,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:56:59,355 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 222 transitions. [2020-08-18 20:56:59,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:56:59,356 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 222 transitions. [2020-08-18 20:56:59,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 20:56:59,357 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:56:59,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:56:59,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:56:59,358 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:56:59,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:56:59,359 INFO L82 PathProgramCache]: Analyzing trace with hash -913158347, now seen corresponding path program 1 times [2020-08-18 20:56:59,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:56:59,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735882752] [2020-08-18 20:56:59,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:56:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:59,619 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:56:59,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:56:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:59,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:56:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:59,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:56:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:59,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:56:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:59,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:56:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:59,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 20:56:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:59,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:56:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:59,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:56:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:59,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:56:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:59,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 20:56:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:59,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 20:56:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:59,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 20:56:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:56:59,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:56:59,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735882752] [2020-08-18 20:56:59,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:56:59,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:56:59,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397174905] [2020-08-18 20:56:59,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:56:59,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:56:59,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:56:59,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:56:59,728 INFO L87 Difference]: Start difference. First operand 193 states and 222 transitions. Second operand 8 states. [2020-08-18 20:57:00,108 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:01,456 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:01,719 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:01,960 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:02,172 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:02,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:02,758 INFO L93 Difference]: Finished difference Result 528 states and 662 transitions. [2020-08-18 20:57:02,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 20:57:02,759 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-08-18 20:57:02,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:02,764 INFO L225 Difference]: With dead ends: 528 [2020-08-18 20:57:02,764 INFO L226 Difference]: Without dead ends: 359 [2020-08-18 20:57:02,765 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:57:02,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-08-18 20:57:02,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 319. [2020-08-18 20:57:02,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-08-18 20:57:02,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 373 transitions. [2020-08-18 20:57:02,828 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 373 transitions. Word has length 79 [2020-08-18 20:57:02,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:02,829 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 373 transitions. [2020-08-18 20:57:02,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:57:02,829 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 373 transitions. [2020-08-18 20:57:02,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 20:57:02,831 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:02,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:57:02,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:57:02,832 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:02,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:02,832 INFO L82 PathProgramCache]: Analyzing trace with hash 421166267, now seen corresponding path program 1 times [2020-08-18 20:57:02,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:02,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975713864] [2020-08-18 20:57:02,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,128 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:03,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:57:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:57:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:57:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 20:57:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 20:57:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 20:57:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:57:03,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975713864] [2020-08-18 20:57:03,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:57:03,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:57:03,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610291758] [2020-08-18 20:57:03,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:57:03,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:03,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:57:03,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:57:03,251 INFO L87 Difference]: Start difference. First operand 319 states and 373 transitions. Second operand 9 states. [2020-08-18 20:57:03,651 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:04,204 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:05,628 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:07,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:07,057 INFO L93 Difference]: Finished difference Result 770 states and 989 transitions. [2020-08-18 20:57:07,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 20:57:07,058 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-18 20:57:07,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:07,067 INFO L225 Difference]: With dead ends: 770 [2020-08-18 20:57:07,067 INFO L226 Difference]: Without dead ends: 590 [2020-08-18 20:57:07,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-18 20:57:07,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2020-08-18 20:57:07,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 524. [2020-08-18 20:57:07,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-18 20:57:07,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 634 transitions. [2020-08-18 20:57:07,185 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 634 transitions. Word has length 83 [2020-08-18 20:57:07,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:07,186 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 634 transitions. [2020-08-18 20:57:07,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:57:07,186 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 634 transitions. [2020-08-18 20:57:07,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 20:57:07,188 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:07,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:57:07,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:57:07,189 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:07,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:07,190 INFO L82 PathProgramCache]: Analyzing trace with hash 750932028, now seen corresponding path program 1 times [2020-08-18 20:57:07,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:07,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511925536] [2020-08-18 20:57:07,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,463 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:07,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:57:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:57:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:57:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 20:57:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 20:57:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 20:57:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:57:07,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511925536] [2020-08-18 20:57:07,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:57:07,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:57:07,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856778131] [2020-08-18 20:57:07,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:57:07,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:07,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:57:07,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:57:07,585 INFO L87 Difference]: Start difference. First operand 524 states and 634 transitions. Second operand 8 states. [2020-08-18 20:57:08,435 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:08,649 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:08,883 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:09,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:09,769 INFO L93 Difference]: Finished difference Result 947 states and 1187 transitions. [2020-08-18 20:57:09,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:57:09,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-18 20:57:09,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:09,773 INFO L225 Difference]: With dead ends: 947 [2020-08-18 20:57:09,774 INFO L226 Difference]: Without dead ends: 566 [2020-08-18 20:57:09,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:57:09,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2020-08-18 20:57:09,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 524. [2020-08-18 20:57:09,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2020-08-18 20:57:09,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 633 transitions. [2020-08-18 20:57:09,867 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 633 transitions. Word has length 83 [2020-08-18 20:57:09,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:09,868 INFO L479 AbstractCegarLoop]: Abstraction has 524 states and 633 transitions. [2020-08-18 20:57:09,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:57:09,868 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 633 transitions. [2020-08-18 20:57:09,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 20:57:09,869 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:09,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:57:09,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:57:09,870 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:09,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:09,870 INFO L82 PathProgramCache]: Analyzing trace with hash 678545470, now seen corresponding path program 1 times [2020-08-18 20:57:09,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:09,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156915078] [2020-08-18 20:57:09,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,144 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:10,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:10,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:57:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:57:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:57:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 20:57:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 20:57:10,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 20:57:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:57:10,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156915078] [2020-08-18 20:57:10,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:57:10,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 20:57:10,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401346293] [2020-08-18 20:57:10,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:57:10,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:10,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:57:10,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:57:10,286 INFO L87 Difference]: Start difference. First operand 524 states and 633 transitions. Second operand 12 states. [2020-08-18 20:57:11,162 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:11,418 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:11,648 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:12,303 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:12,551 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:57:12,822 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:13,092 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:14,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:14,267 INFO L93 Difference]: Finished difference Result 1071 states and 1335 transitions. [2020-08-18 20:57:14,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 20:57:14,267 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-08-18 20:57:14,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:14,272 INFO L225 Difference]: With dead ends: 1071 [2020-08-18 20:57:14,273 INFO L226 Difference]: Without dead ends: 571 [2020-08-18 20:57:14,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 20:57:14,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-08-18 20:57:14,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 531. [2020-08-18 20:57:14,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-08-18 20:57:14,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 640 transitions. [2020-08-18 20:57:14,403 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 640 transitions. Word has length 83 [2020-08-18 20:57:14,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:14,404 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 640 transitions. [2020-08-18 20:57:14,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:57:14,404 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 640 transitions. [2020-08-18 20:57:14,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-18 20:57:14,409 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:14,409 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:57:14,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:57:14,410 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:14,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:14,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1174041569, now seen corresponding path program 1 times [2020-08-18 20:57:14,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:14,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562051083] [2020-08-18 20:57:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:14,680 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:14,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:14,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:14,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:14,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:14,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:57:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:14,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:57:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:14,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:14,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:14,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:57:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:14,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:14,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:14,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-18 20:57:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:14,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 20:57:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:14,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 20:57:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 20:57:14,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562051083] [2020-08-18 20:57:14,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:57:14,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 20:57:14,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134501279] [2020-08-18 20:57:14,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:57:14,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:14,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:57:14,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:57:14,915 INFO L87 Difference]: Start difference. First operand 531 states and 640 transitions. Second operand 12 states. [2020-08-18 20:57:15,694 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:16,355 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:17,086 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:57:17,394 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:57:17,695 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:57:17,935 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:57:18,209 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:57:18,466 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:57:18,935 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-18 20:57:19,178 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:57:19,510 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:57:19,773 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 20:57:21,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:21,672 INFO L93 Difference]: Finished difference Result 1563 states and 1960 transitions. [2020-08-18 20:57:21,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 20:57:21,673 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 95 [2020-08-18 20:57:21,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:21,681 INFO L225 Difference]: With dead ends: 1563 [2020-08-18 20:57:21,682 INFO L226 Difference]: Without dead ends: 1056 [2020-08-18 20:57:21,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-18 20:57:21,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-08-18 20:57:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 998. [2020-08-18 20:57:21,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 998 states. [2020-08-18 20:57:21,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1189 transitions. [2020-08-18 20:57:21,898 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1189 transitions. Word has length 95 [2020-08-18 20:57:21,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:21,899 INFO L479 AbstractCegarLoop]: Abstraction has 998 states and 1189 transitions. [2020-08-18 20:57:21,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:57:21,900 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1189 transitions. [2020-08-18 20:57:21,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-18 20:57:21,903 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:21,903 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:57:21,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:57:21,904 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:21,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:21,904 INFO L82 PathProgramCache]: Analyzing trace with hash 175480453, now seen corresponding path program 1 times [2020-08-18 20:57:21,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:21,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973811561] [2020-08-18 20:57:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,197 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:22,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:57:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:57:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:57:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:57:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 20:57:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 20:57:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 20:57:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 20:57:22,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973811561] [2020-08-18 20:57:22,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:57:22,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 20:57:22,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859292220] [2020-08-18 20:57:22,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 20:57:22,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:22,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 20:57:22,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:57:22,415 INFO L87 Difference]: Start difference. First operand 998 states and 1189 transitions. Second operand 14 states. [2020-08-18 20:57:23,459 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:23,732 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:23,945 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:24,473 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:25,126 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:25,463 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:26,023 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:26,275 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:57:26,557 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:57:28,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:28,089 INFO L93 Difference]: Finished difference Result 2050 states and 2569 transitions. [2020-08-18 20:57:28,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 20:57:28,091 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 99 [2020-08-18 20:57:28,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:28,099 INFO L225 Difference]: With dead ends: 2050 [2020-08-18 20:57:28,099 INFO L226 Difference]: Without dead ends: 1076 [2020-08-18 20:57:28,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2020-08-18 20:57:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2020-08-18 20:57:28,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 914. [2020-08-18 20:57:28,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-08-18 20:57:28,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1085 transitions. [2020-08-18 20:57:28,264 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1085 transitions. Word has length 99 [2020-08-18 20:57:28,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:28,264 INFO L479 AbstractCegarLoop]: Abstraction has 914 states and 1085 transitions. [2020-08-18 20:57:28,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 20:57:28,264 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1085 transitions. [2020-08-18 20:57:28,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-08-18 20:57:28,267 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:57:28,267 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:57:28,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:57:28,267 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:57:28,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:57:28,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1676429373, now seen corresponding path program 1 times [2020-08-18 20:57:28,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:57:28,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056132900] [2020-08-18 20:57:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:57:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:28,597 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:28,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:57:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:28,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:57:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:28,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:57:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:28,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:28,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:57:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:28,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:57:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:28,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:57:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:28,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:57:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:28,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:28,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:57:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:28,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:28,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:57:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:28,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:57:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:28,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 20:57:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:28,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-18 20:57:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:28,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-18 20:57:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:57:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:57:28,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056132900] [2020-08-18 20:57:28,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:57:28,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 20:57:28,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654387391] [2020-08-18 20:57:28,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 20:57:28,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:57:28,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 20:57:28,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-18 20:57:28,739 INFO L87 Difference]: Start difference. First operand 914 states and 1085 transitions. Second operand 13 states. [2020-08-18 20:57:30,043 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:30,299 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:30,535 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:57:31,535 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:57:32,074 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:57:32,418 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:57:32,706 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:57:33,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:57:33,391 INFO L93 Difference]: Finished difference Result 1575 states and 1874 transitions. [2020-08-18 20:57:33,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 20:57:33,392 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 99 [2020-08-18 20:57:33,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:57:33,394 INFO L225 Difference]: With dead ends: 1575 [2020-08-18 20:57:33,394 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 20:57:33,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-18 20:57:33,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 20:57:33,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 20:57:33,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 20:57:33,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 20:57:33,400 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2020-08-18 20:57:33,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:57:33,400 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 20:57:33,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 20:57:33,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 20:57:33,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 20:57:33,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:57:33,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 20:57:34,323 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-18 20:57:35,752 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-18 20:57:36,123 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 248 [2020-08-18 20:57:37,886 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 244 [2020-08-18 20:57:38,961 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-18 20:57:40,102 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-18 20:57:40,926 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39 [2020-08-18 20:57:41,086 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-18 20:57:41,247 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-18 20:57:41,412 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-18 20:57:42,047 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 33 [2020-08-18 20:57:43,216 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-18 20:57:43,808 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30 [2020-08-18 20:57:43,986 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 1 [2020-08-18 20:57:44,149 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-18 20:57:44,737 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 30 [2020-08-18 20:57:45,560 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 38 [2020-08-18 20:57:45,726 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 22 [2020-08-18 20:57:45,923 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:57:46,079 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1