/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:35:46,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:35:46,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:35:46,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:35:46,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:35:46,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:35:46,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:35:46,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:35:46,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:35:46,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:35:46,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:35:46,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:35:46,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:35:46,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:35:46,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:35:46,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:35:46,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:35:46,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:35:46,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:35:46,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:35:46,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:35:46,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:35:46,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:35:46,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:35:46,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:35:46,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:35:46,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:35:46,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:35:46,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:35:46,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:35:46,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:35:46,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:35:46,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:35:46,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:35:46,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:35:46,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:35:46,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:35:46,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:35:46,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:35:46,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:35:46,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:35:46,922 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 19:35:46,965 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:35:46,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:35:46,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:35:46,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:35:46,968 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:35:46,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:35:46,968 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:35:46,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:35:46,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:35:46,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:35:46,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:35:46,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:35:46,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:35:46,971 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:35:46,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:35:46,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:35:46,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:35:46,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:35:46,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:35:46,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:35:46,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:35:46,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:35:46,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:35:46,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:35:46,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:35:46,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:35:46,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:35:46,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:35:46,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:35:46,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 19:35:47,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:35:47,324 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:35:47,327 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:35:47,329 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:35:47,330 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:35:47,330 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-21 19:35:47,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd4403feb/52117b3601fa4427ae63d5bd414e5c58/FLAG8e48685b8 [2020-08-21 19:35:47,927 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:35:47,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product54.cil.c [2020-08-21 19:35:47,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd4403feb/52117b3601fa4427ae63d5bd414e5c58/FLAG8e48685b8 [2020-08-21 19:35:48,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dd4403feb/52117b3601fa4427ae63d5bd414e5c58 [2020-08-21 19:35:48,246 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:35:48,247 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:35:48,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:35:48,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:35:48,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:35:48,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:35:48" (1/1) ... [2020-08-21 19:35:48,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10ac6c89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:48, skipping insertion in model container [2020-08-21 19:35:48,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:35:48" (1/1) ... [2020-08-21 19:35:48,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:35:48,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:35:48,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:35:48,849 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:35:48,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:35:49,024 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:35:49,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:49 WrapperNode [2020-08-21 19:35:49,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:35:49,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:35:49,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:35:49,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:35:49,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:49" (1/1) ... [2020-08-21 19:35:49,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:49" (1/1) ... [2020-08-21 19:35:49,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:49" (1/1) ... [2020-08-21 19:35:49,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:49" (1/1) ... [2020-08-21 19:35:49,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:49" (1/1) ... [2020-08-21 19:35:49,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:49" (1/1) ... [2020-08-21 19:35:49,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:49" (1/1) ... [2020-08-21 19:35:49,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:35:49,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:35:49,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:35:49,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:35:49,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:49" (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 [2020-08-21 19:35:49,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:35:49,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:35:49,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 19:35:49,189 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 19:35:49,189 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 19:35:49,190 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 19:35:49,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 19:35:49,190 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 19:35:49,190 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 19:35:49,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 19:35:49,191 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 19:35:49,191 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 19:35:49,191 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 19:35:49,191 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 19:35:49,191 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 19:35:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:35:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 19:35:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 19:35:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 19:35:49,192 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 19:35:49,193 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 19:35:49,193 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 19:35:49,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 19:35:49,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 19:35:49,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 19:35:49,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 19:35:49,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 19:35:49,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 19:35:49,194 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 19:35:49,194 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 19:35:49,194 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 19:35:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 19:35:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 19:35:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 19:35:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 19:35:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 19:35:49,195 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 19:35:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 19:35:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 19:35:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 19:35:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 19:35:49,196 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 19:35:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:35:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:35:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 19:35:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 19:35:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 19:35:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 19:35:49,197 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 19:35:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 19:35:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 19:35:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 19:35:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 19:35:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 19:35:49,198 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 19:35:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 19:35:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 19:35:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 19:35:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 19:35:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 19:35:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 19:35:49,199 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 19:35:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 19:35:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 19:35:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:35:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 19:35:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 19:35:49,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 19:35:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 19:35:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 19:35:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 19:35:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 19:35:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 19:35:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 19:35:49,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 19:35:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:35:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 19:35:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 19:35:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:35:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 19:35:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 19:35:49,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:35:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 19:35:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 19:35:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 19:35:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 19:35:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 19:35:49,203 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 19:35:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 19:35:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 19:35:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 19:35:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 19:35:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 19:35:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 19:35:49,204 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 19:35:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:35:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 19:35:49,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:35:50,339 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:35:50,339 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 19:35:50,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:35:50 BoogieIcfgContainer [2020-08-21 19:35:50,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:35:50,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:35:50,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:35:50,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:35:50,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:35:48" (1/3) ... [2020-08-21 19:35:50,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac23f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:35:50, skipping insertion in model container [2020-08-21 19:35:50,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:35:49" (2/3) ... [2020-08-21 19:35:50,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac23f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:35:50, skipping insertion in model container [2020-08-21 19:35:50,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:35:50" (3/3) ... [2020-08-21 19:35:50,358 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product54.cil.c [2020-08-21 19:35:50,367 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:35:50,374 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:35:50,388 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:35:50,410 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:35:50,410 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:35:50,410 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:35:50,411 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:35:50,411 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:35:50,411 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:35:50,411 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:35:50,411 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:35:50,433 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-08-21 19:35:50,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 19:35:50,445 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:50,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:35:50,446 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:50,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:50,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1727770094, now seen corresponding path program 1 times [2020-08-21 19:35:50,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:50,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583787053] [2020-08-21 19:35:50,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:51,141 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:51,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:51,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:51,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:51,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:51,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:51,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:35:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:51,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:35:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:51,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 19:35:51,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:51,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583787053] [2020-08-21 19:35:51,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:51,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 19:35:51,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480113275] [2020-08-21 19:35:51,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 19:35:51,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:51,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 19:35:51,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:35:51,277 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 3 states. [2020-08-21 19:35:52,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:35:52,549 INFO L93 Difference]: Finished difference Result 350 states and 455 transitions. [2020-08-21 19:35:52,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 19:35:52,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 19:35:52,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:35:52,566 INFO L225 Difference]: With dead ends: 350 [2020-08-21 19:35:52,567 INFO L226 Difference]: Without dead ends: 188 [2020-08-21 19:35:52,571 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 [2020-08-21 19:35:52,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-21 19:35:52,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 153. [2020-08-21 19:35:52,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-21 19:35:52,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2020-08-21 19:35:52,667 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 52 [2020-08-21 19:35:52,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:35:52,668 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2020-08-21 19:35:52,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 19:35:52,668 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2020-08-21 19:35:52,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 19:35:52,673 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:52,673 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] [2020-08-21 19:35:52,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:35:52,673 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:52,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:52,674 INFO L82 PathProgramCache]: Analyzing trace with hash -23295260, now seen corresponding path program 1 times [2020-08-21 19:35:52,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:52,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393975274] [2020-08-21 19:35:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:52,999 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:53,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:53,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:53,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:53,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:53,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:53,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 19:35:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:53,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 19:35:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:53,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 19:35:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:53,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393975274] [2020-08-21 19:35:53,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:53,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:35:53,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444019205] [2020-08-21 19:35:53,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:35:53,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:53,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:35:53,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:35:53,045 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 4 states. [2020-08-21 19:35:53,420 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:35:54,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:35:54,365 INFO L93 Difference]: Finished difference Result 279 states and 342 transitions. [2020-08-21 19:35:54,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:35:54,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 19:35:54,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:35:54,370 INFO L225 Difference]: With dead ends: 279 [2020-08-21 19:35:54,370 INFO L226 Difference]: Without dead ends: 172 [2020-08-21 19:35:54,372 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 [2020-08-21 19:35:54,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-21 19:35:54,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-21 19:35:54,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-21 19:35:54,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2020-08-21 19:35:54,438 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 53 [2020-08-21 19:35:54,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:35:54,439 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2020-08-21 19:35:54,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:35:54,439 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2020-08-21 19:35:54,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 19:35:54,441 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:54,442 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] [2020-08-21 19:35:54,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:35:54,442 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:54,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:54,443 INFO L82 PathProgramCache]: Analyzing trace with hash 646991369, now seen corresponding path program 1 times [2020-08-21 19:35:54,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:54,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077058493] [2020-08-21 19:35:54,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:54,738 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:54,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:54,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:54,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:54,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:54,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:54,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:35:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:54,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 19:35:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:54,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 19:35:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:54,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:54,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077058493] [2020-08-21 19:35:54,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:54,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 19:35:54,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905979818] [2020-08-21 19:35:54,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:35:54,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:54,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:35:54,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:35:54,823 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 8 states. [2020-08-21 19:35:55,143 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:35:55,496 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:55,730 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:55,951 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:35:57,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:35:57,365 INFO L93 Difference]: Finished difference Result 292 states and 360 transitions. [2020-08-21 19:35:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 19:35:57,366 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 19:35:57,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:35:57,369 INFO L225 Difference]: With dead ends: 292 [2020-08-21 19:35:57,370 INFO L226 Difference]: Without dead ends: 172 [2020-08-21 19:35:57,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:35:57,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-21 19:35:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 144. [2020-08-21 19:35:57,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-08-21 19:35:57,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2020-08-21 19:35:57,411 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 58 [2020-08-21 19:35:57,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:35:57,411 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2020-08-21 19:35:57,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:35:57,411 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2020-08-21 19:35:57,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-08-21 19:35:57,414 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:35:57,415 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] [2020-08-21 19:35:57,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:35:57,415 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:35:57,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:35:57,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1077665999, now seen corresponding path program 1 times [2020-08-21 19:35:57,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:35:57,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574553098] [2020-08-21 19:35:57,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:35:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:57,717 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:35:57,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:35:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:57,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:35:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:57,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:35:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:57,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:35:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:57,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:35:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:57,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 19:35:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:57,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:35:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:57,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:35:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:57,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:35:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:57,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 19:35:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:57,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-21 19:35:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:57,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 19:35:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:35:57,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:35:57,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574553098] [2020-08-21 19:35:57,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:35:57,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:35:57,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988292921] [2020-08-21 19:35:57,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:35:57,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:35:57,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:35:57,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:35:57,835 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand 6 states. [2020-08-21 19:35:58,111 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:35:59,328 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:00,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:36:00,122 INFO L93 Difference]: Finished difference Result 407 states and 503 transitions. [2020-08-21 19:36:00,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 19:36:00,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-08-21 19:36:00,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:36:00,127 INFO L225 Difference]: With dead ends: 407 [2020-08-21 19:36:00,127 INFO L226 Difference]: Without dead ends: 287 [2020-08-21 19:36:00,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 19:36:00,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-08-21 19:36:00,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 244. [2020-08-21 19:36:00,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-21 19:36:00,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 277 transitions. [2020-08-21 19:36:00,205 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 277 transitions. Word has length 76 [2020-08-21 19:36:00,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:36:00,206 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 277 transitions. [2020-08-21 19:36:00,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:36:00,206 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 277 transitions. [2020-08-21 19:36:00,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 19:36:00,207 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:36:00,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:36:00,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:36:00,208 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:36:00,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:36:00,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1489636928, now seen corresponding path program 1 times [2020-08-21 19:36:00,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:36:00,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012423588] [2020-08-21 19:36:00,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:36:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:00,479 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:36:00,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:36:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:00,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:36:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:00,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:36:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:00,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:36:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:00,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:36:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:00,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 19:36:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:00,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:00,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:00,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:00,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:00,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:36:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:00,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 19:36:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:00,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-21 19:36:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:00,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 19:36:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:36:00,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012423588] [2020-08-21 19:36:00,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:36:00,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 19:36:00,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571381201] [2020-08-21 19:36:00,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:36:00,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:36:00,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:36:00,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:36:00,667 INFO L87 Difference]: Start difference. First operand 244 states and 277 transitions. Second operand 8 states. [2020-08-21 19:36:01,035 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:36:02,356 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:02,653 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:02,912 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:03,168 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:36:04,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:36:04,080 INFO L93 Difference]: Finished difference Result 641 states and 791 transitions. [2020-08-21 19:36:04,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 19:36:04,081 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2020-08-21 19:36:04,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:36:04,084 INFO L225 Difference]: With dead ends: 641 [2020-08-21 19:36:04,085 INFO L226 Difference]: Without dead ends: 421 [2020-08-21 19:36:04,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:36:04,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-08-21 19:36:04,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 378. [2020-08-21 19:36:04,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-08-21 19:36:04,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 436 transitions. [2020-08-21 19:36:04,154 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 436 transitions. Word has length 90 [2020-08-21 19:36:04,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:36:04,155 INFO L479 AbstractCegarLoop]: Abstraction has 378 states and 436 transitions. [2020-08-21 19:36:04,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:36:04,155 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 436 transitions. [2020-08-21 19:36:04,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 19:36:04,157 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:36:04,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:36:04,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:36:04,158 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:36:04,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:36:04,158 INFO L82 PathProgramCache]: Analyzing trace with hash -467189990, now seen corresponding path program 1 times [2020-08-21 19:36:04,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:36:04,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907877629] [2020-08-21 19:36:04,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:36:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:04,411 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:36:04,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:36:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:04,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:36:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:04,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:36:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:04,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:36:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:04,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:36:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:04,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:36:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:04,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:36:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:04,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:04,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:04,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:04,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:04,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:36:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:04,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 19:36:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:04,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 19:36:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:04,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 19:36:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:04,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:36:04,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907877629] [2020-08-21 19:36:04,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:36:04,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:36:04,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830291628] [2020-08-21 19:36:04,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:36:04,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:36:04,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:36:04,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:36:04,597 INFO L87 Difference]: Start difference. First operand 378 states and 436 transitions. Second operand 9 states. [2020-08-21 19:36:04,978 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:36:05,502 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:36:07,107 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:36:09,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:36:09,187 INFO L93 Difference]: Finished difference Result 980 states and 1245 transitions. [2020-08-21 19:36:09,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 19:36:09,187 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-21 19:36:09,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:36:09,193 INFO L225 Difference]: With dead ends: 980 [2020-08-21 19:36:09,194 INFO L226 Difference]: Without dead ends: 749 [2020-08-21 19:36:09,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-21 19:36:09,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2020-08-21 19:36:09,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 678. [2020-08-21 19:36:09,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-21 19:36:09,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 813 transitions. [2020-08-21 19:36:09,331 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 813 transitions. Word has length 94 [2020-08-21 19:36:09,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:36:09,331 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 813 transitions. [2020-08-21 19:36:09,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:36:09,332 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 813 transitions. [2020-08-21 19:36:09,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 19:36:09,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:36:09,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:36:09,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 19:36:09,334 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:36:09,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:36:09,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1892117019, now seen corresponding path program 1 times [2020-08-21 19:36:09,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:36:09,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699860893] [2020-08-21 19:36:09,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:36:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:09,561 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:36:09,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:36:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:09,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:36:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:09,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:36:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:09,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:36:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:09,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:36:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:09,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:36:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:09,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:36:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:09,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:09,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:09,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:09,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:09,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:36:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:09,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 19:36:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:09,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 19:36:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:09,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 19:36:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:36:09,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699860893] [2020-08-21 19:36:09,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:36:09,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 19:36:09,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406352099] [2020-08-21 19:36:09,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:36:09,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:36:09,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:36:09,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:36:09,748 INFO L87 Difference]: Start difference. First operand 678 states and 813 transitions. Second operand 8 states. [2020-08-21 19:36:10,827 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:11,052 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:36:11,298 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:12,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:36:12,567 INFO L93 Difference]: Finished difference Result 1250 states and 1552 transitions. [2020-08-21 19:36:12,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 19:36:12,567 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-21 19:36:12,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:36:12,574 INFO L225 Difference]: With dead ends: 1250 [2020-08-21 19:36:12,574 INFO L226 Difference]: Without dead ends: 723 [2020-08-21 19:36:12,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:36:12,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-08-21 19:36:12,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 678. [2020-08-21 19:36:12,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-08-21 19:36:12,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 812 transitions. [2020-08-21 19:36:12,736 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 812 transitions. Word has length 94 [2020-08-21 19:36:12,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:36:12,737 INFO L479 AbstractCegarLoop]: Abstraction has 678 states and 812 transitions. [2020-08-21 19:36:12,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:36:12,737 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 812 transitions. [2020-08-21 19:36:12,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 19:36:12,739 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:36:12,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:36:12,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 19:36:12,740 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:36:12,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:36:12,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1743318755, now seen corresponding path program 1 times [2020-08-21 19:36:12,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:36:12,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086872259] [2020-08-21 19:36:12,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:36:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:13,006 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:36:13,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:36:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:13,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:36:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:13,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:36:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:13,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:36:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:13,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:36:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:13,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:36:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:13,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:36:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:13,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:13,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:13,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:13,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:13,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:36:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:13,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 19:36:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:13,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 19:36:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:13,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 19:36:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:36:13,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086872259] [2020-08-21 19:36:13,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:36:13,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 19:36:13,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581017628] [2020-08-21 19:36:13,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 19:36:13,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:36:13,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 19:36:13,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:36:13,167 INFO L87 Difference]: Start difference. First operand 678 states and 812 transitions. Second operand 12 states. [2020-08-21 19:36:13,588 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:13,811 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:14,050 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:14,703 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:14,941 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:36:15,193 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:15,422 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:16,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:36:16,664 INFO L93 Difference]: Finished difference Result 1343 states and 1658 transitions. [2020-08-21 19:36:16,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 19:36:16,669 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-21 19:36:16,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:36:16,674 INFO L225 Difference]: With dead ends: 1343 [2020-08-21 19:36:16,674 INFO L226 Difference]: Without dead ends: 689 [2020-08-21 19:36:16,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-21 19:36:16,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-08-21 19:36:16,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 649. [2020-08-21 19:36:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 19:36:16,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 772 transitions. [2020-08-21 19:36:16,810 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 772 transitions. Word has length 94 [2020-08-21 19:36:16,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:36:16,810 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 772 transitions. [2020-08-21 19:36:16,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 19:36:16,811 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 772 transitions. [2020-08-21 19:36:16,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-08-21 19:36:16,812 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:36:16,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:36:16,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 19:36:16,813 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:36:16,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:36:16,813 INFO L82 PathProgramCache]: Analyzing trace with hash -794227168, now seen corresponding path program 1 times [2020-08-21 19:36:16,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:36:16,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824226384] [2020-08-21 19:36:16,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:36:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,078 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:36:17,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:36:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:36:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:36:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:36:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:36:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:36:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 19:36:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:36:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 19:36:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 19:36:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-21 19:36:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:17,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:36:17,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824226384] [2020-08-21 19:36:17,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:36:17,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-21 19:36:17,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153396213] [2020-08-21 19:36:17,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 19:36:17,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:36:17,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 19:36:17,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-21 19:36:17,227 INFO L87 Difference]: Start difference. First operand 649 states and 772 transitions. Second operand 13 states. [2020-08-21 19:36:17,736 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:17,989 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:18,235 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:19,230 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:36:19,839 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:20,154 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:36:20,428 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:36:21,147 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:36:21,468 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:22,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:36:22,046 INFO L93 Difference]: Finished difference Result 1307 states and 1571 transitions. [2020-08-21 19:36:22,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 19:36:22,047 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-08-21 19:36:22,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:36:22,052 INFO L225 Difference]: With dead ends: 1307 [2020-08-21 19:36:22,052 INFO L226 Difference]: Without dead ends: 682 [2020-08-21 19:36:22,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-08-21 19:36:22,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-08-21 19:36:22,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 649. [2020-08-21 19:36:22,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 19:36:22,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 756 transitions. [2020-08-21 19:36:22,187 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 756 transitions. Word has length 95 [2020-08-21 19:36:22,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:36:22,190 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 756 transitions. [2020-08-21 19:36:22,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 19:36:22,190 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 756 transitions. [2020-08-21 19:36:22,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-21 19:36:22,194 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:36:22,195 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:36:22,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 19:36:22,196 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:36:22,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:36:22,196 INFO L82 PathProgramCache]: Analyzing trace with hash -252196105, now seen corresponding path program 1 times [2020-08-21 19:36:22,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:36:22,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836099271] [2020-08-21 19:36:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:36:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,476 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:36:22,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:36:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:36:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:36:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:36:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:36:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 19:36:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:36:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 19:36:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 19:36:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 19:36:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:36:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 19:36:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-21 19:36:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-21 19:36:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-21 19:36:22,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836099271] [2020-08-21 19:36:22,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:36:22,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 19:36:22,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230062] [2020-08-21 19:36:22,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 19:36:22,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:36:22,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 19:36:22,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 19:36:22,668 INFO L87 Difference]: Start difference. First operand 649 states and 756 transitions. Second operand 10 states. [2020-08-21 19:36:23,560 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:23,814 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:36:24,062 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:24,302 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:25,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:36:25,324 INFO L93 Difference]: Finished difference Result 1216 states and 1446 transitions. [2020-08-21 19:36:25,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 19:36:25,329 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 139 [2020-08-21 19:36:25,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:36:25,333 INFO L225 Difference]: With dead ends: 1216 [2020-08-21 19:36:25,334 INFO L226 Difference]: Without dead ends: 670 [2020-08-21 19:36:25,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:36:25,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-21 19:36:25,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 649. [2020-08-21 19:36:25,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2020-08-21 19:36:25,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 754 transitions. [2020-08-21 19:36:25,467 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 754 transitions. Word has length 139 [2020-08-21 19:36:25,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:36:25,467 INFO L479 AbstractCegarLoop]: Abstraction has 649 states and 754 transitions. [2020-08-21 19:36:25,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 19:36:25,468 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 754 transitions. [2020-08-21 19:36:25,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-21 19:36:25,471 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:36:25,472 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:36:25,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 19:36:25,472 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:36:25,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:36:25,473 INFO L82 PathProgramCache]: Analyzing trace with hash 2084196405, now seen corresponding path program 1 times [2020-08-21 19:36:25,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:36:25,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230541051] [2020-08-21 19:36:25,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:36:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,795 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:36:25,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:36:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:36:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:36:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:36:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:36:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 19:36:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:36:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 19:36:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 19:36:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-21 19:36:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:36:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 19:36:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:25,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-21 19:36:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:26,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-21 19:36:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-21 19:36:26,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230541051] [2020-08-21 19:36:26,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:36:26,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 19:36:26,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006441323] [2020-08-21 19:36:26,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 19:36:26,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:36:26,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 19:36:26,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:36:26,025 INFO L87 Difference]: Start difference. First operand 649 states and 754 transitions. Second operand 12 states. [2020-08-21 19:36:26,705 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:27,051 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:27,262 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:27,884 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:28,112 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:28,328 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:29,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:36:29,413 INFO L93 Difference]: Finished difference Result 1124 states and 1336 transitions. [2020-08-21 19:36:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 19:36:29,414 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-08-21 19:36:29,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:36:29,417 INFO L225 Difference]: With dead ends: 1124 [2020-08-21 19:36:29,417 INFO L226 Difference]: Without dead ends: 573 [2020-08-21 19:36:29,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 19:36:29,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-21 19:36:29,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 552. [2020-08-21 19:36:29,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-08-21 19:36:29,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 639 transitions. [2020-08-21 19:36:29,525 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 639 transitions. Word has length 139 [2020-08-21 19:36:29,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:36:29,526 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 639 transitions. [2020-08-21 19:36:29,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 19:36:29,526 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 639 transitions. [2020-08-21 19:36:29,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-21 19:36:29,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:36:29,530 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:36:29,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 19:36:29,530 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:36:29,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:36:29,531 INFO L82 PathProgramCache]: Analyzing trace with hash 2081124794, now seen corresponding path program 1 times [2020-08-21 19:36:29,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:36:29,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910724176] [2020-08-21 19:36:29,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:36:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,806 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:36:29,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:36:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:36:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:36:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:36:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:36:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:36:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:36:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:36:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 19:36:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-21 19:36:29,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 19:36:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:36:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-21 19:36:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 19:36:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:29,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 19:36:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-21 19:36:30,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910724176] [2020-08-21 19:36:30,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:36:30,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 19:36:30,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969056913] [2020-08-21 19:36:30,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 19:36:30,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:36:30,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 19:36:30,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-21 19:36:30,028 INFO L87 Difference]: Start difference. First operand 552 states and 639 transitions. Second operand 11 states. [2020-08-21 19:36:31,001 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:36:31,625 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:32,556 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:33,035 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-21 19:36:33,496 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 188 [2020-08-21 19:36:33,715 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:36:35,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:36:35,273 INFO L93 Difference]: Finished difference Result 1637 states and 1961 transitions. [2020-08-21 19:36:35,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-21 19:36:35,273 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 143 [2020-08-21 19:36:35,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:36:35,279 INFO L225 Difference]: With dead ends: 1637 [2020-08-21 19:36:35,279 INFO L226 Difference]: Without dead ends: 1109 [2020-08-21 19:36:35,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-08-21 19:36:35,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2020-08-21 19:36:35,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1077. [2020-08-21 19:36:35,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1077 states. [2020-08-21 19:36:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1232 transitions. [2020-08-21 19:36:35,498 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1232 transitions. Word has length 143 [2020-08-21 19:36:35,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:36:35,500 INFO L479 AbstractCegarLoop]: Abstraction has 1077 states and 1232 transitions. [2020-08-21 19:36:35,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 19:36:35,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1232 transitions. [2020-08-21 19:36:35,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-21 19:36:35,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:36:35,503 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:36:35,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 19:36:35,503 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:36:35,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:36:35,504 INFO L82 PathProgramCache]: Analyzing trace with hash -708969378, now seen corresponding path program 1 times [2020-08-21 19:36:35,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:36:35,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028549117] [2020-08-21 19:36:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:36:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,828 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:36:35,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:36:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:36:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:36:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:36:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:36:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:36:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 19:36:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 19:36:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:36:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 19:36:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 19:36:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 19:36:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:36:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 19:36:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-21 19:36:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:35,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 19:36:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:36,026 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 19:36:36,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028549117] [2020-08-21 19:36:36,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:36:36,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 19:36:36,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721317870] [2020-08-21 19:36:36,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 19:36:36,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:36:36,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 19:36:36,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-21 19:36:36,029 INFO L87 Difference]: Start difference. First operand 1077 states and 1232 transitions. Second operand 15 states. [2020-08-21 19:36:36,625 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:36,900 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:37,141 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:37,770 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:36:38,903 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:36:39,251 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:39,552 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:36:39,806 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 19:36:41,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:36:41,941 INFO L93 Difference]: Finished difference Result 2187 states and 2605 transitions. [2020-08-21 19:36:41,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-21 19:36:41,942 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-21 19:36:41,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:36:41,952 INFO L225 Difference]: With dead ends: 2187 [2020-08-21 19:36:41,953 INFO L226 Difference]: Without dead ends: 1134 [2020-08-21 19:36:41,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2020-08-21 19:36:41,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2020-08-21 19:36:42,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1011. [2020-08-21 19:36:42,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2020-08-21 19:36:42,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1153 transitions. [2020-08-21 19:36:42,177 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1153 transitions. Word has length 147 [2020-08-21 19:36:42,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:36:42,177 INFO L479 AbstractCegarLoop]: Abstraction has 1011 states and 1153 transitions. [2020-08-21 19:36:42,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 19:36:42,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1153 transitions. [2020-08-21 19:36:42,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-21 19:36:42,180 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:36:42,181 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:36:42,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 19:36:42,181 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:36:42,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:36:42,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1161992490, now seen corresponding path program 1 times [2020-08-21 19:36:42,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:36:42,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408791577] [2020-08-21 19:36:42,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:36:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,580 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:36:42,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:36:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:36:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:36:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:36:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:36:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 19:36:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:36:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:36:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 19:36:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:36:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 19:36:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 19:36:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:36:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:36:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 19:36:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 19:36:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 19:36:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 19:36:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:36:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-08-21 19:36:42,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408791577] [2020-08-21 19:36:42,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 19:36:42,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 19:36:42,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212577686] [2020-08-21 19:36:42,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 19:36:42,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:36:42,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 19:36:42,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-21 19:36:42,870 INFO L87 Difference]: Start difference. First operand 1011 states and 1153 transitions. Second operand 15 states. [2020-08-21 19:36:43,293 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:36:43,998 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:36:45,220 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:36:45,552 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 19:36:46,043 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189