/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:08:24,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:08:24,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:08:24,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:08:24,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:08:24,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:08:24,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:08:24,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:08:24,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:08:24,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:08:24,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:08:24,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:08:24,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:08:24,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:08:24,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:08:24,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:08:24,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:08:24,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:08:24,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:08:24,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:08:24,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:08:24,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:08:24,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:08:24,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:08:24,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:08:24,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:08:24,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:08:24,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:08:24,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:08:24,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:08:24,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:08:24,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:08:24,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:08:24,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:08:24,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:08:24,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:08:24,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:08:24,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:08:24,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:08:24,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:08:24,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:08:24,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 20:08:24,955 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:08:24,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:08:24,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:08:24,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:08:24,958 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:08:24,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:08:24,959 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:08:24,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:08:24,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:08:24,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:08:24,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:08:24,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:08:24,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:08:24,961 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:08:24,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:08:24,961 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:08:24,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:08:24,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:08:24,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:08:24,962 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:08:24,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:08:24,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:08:24,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:08:24,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:08:24,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:08:24,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:08:24,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:08:24,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:08:24,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:08:24,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:08:25,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:08:25,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:08:25,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:08:25,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:08:25,325 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:08:25,326 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-18 20:08:25,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59dc878f5/05a2acdafe344841b352bd8eeaeddb3c/FLAG98f84152e [2020-08-18 20:08:25,899 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:08:25,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product42.cil.c [2020-08-18 20:08:25,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59dc878f5/05a2acdafe344841b352bd8eeaeddb3c/FLAG98f84152e [2020-08-18 20:08:26,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59dc878f5/05a2acdafe344841b352bd8eeaeddb3c [2020-08-18 20:08:26,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:08:26,196 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:08:26,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:08:26,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:08:26,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:08:26,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:08:26" (1/1) ... [2020-08-18 20:08:26,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18839cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:26, skipping insertion in model container [2020-08-18 20:08:26,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:08:26" (1/1) ... [2020-08-18 20:08:26,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:08:26,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:08:26,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:08:26,747 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:08:26,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:08:26,876 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:08:26,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:26 WrapperNode [2020-08-18 20:08:26,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:08:26,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:08:26,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:08:26,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:08:26,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:26" (1/1) ... [2020-08-18 20:08:26,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:26" (1/1) ... [2020-08-18 20:08:26,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:26" (1/1) ... [2020-08-18 20:08:26,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:26" (1/1) ... [2020-08-18 20:08:26,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:26" (1/1) ... [2020-08-18 20:08:26,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:26" (1/1) ... [2020-08-18 20:08:26,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:26" (1/1) ... [2020-08-18 20:08:26,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:08:26,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:08:26,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:08:26,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:08:26,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:08:27,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:08:27,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:08:27,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:08:27,040 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:08:27,040 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:08:27,040 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:08:27,041 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:08:27,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:08:27,041 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:08:27,041 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:08:27,041 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:08:27,041 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:08:27,042 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-18 20:08:27,042 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:08:27,042 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:08:27,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:08:27,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:08:27,042 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:08:27,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:08:27,043 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 20:08:27,043 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:08:27,043 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:08:27,043 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:08:27,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:08:27,044 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:08:27,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:08:27,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:08:27,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:08:27,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:08:27,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:08:27,045 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:08:27,045 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:08:27,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:08:27,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:08:27,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:08:27,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:08:27,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:08:27,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:08:27,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 20:08:27,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:08:27,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:08:27,046 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:08:27,047 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:08:27,047 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:08:27,047 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:08:27,047 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:08:27,047 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:08:27,047 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:08:27,048 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:08:27,048 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:08:27,048 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:08:27,048 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:08:27,048 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:08:27,048 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:08:27,048 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:08:27,049 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 20:08:27,049 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:08:27,049 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:08:27,049 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:08:27,049 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:08:27,049 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:08:27,050 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:08:27,050 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:08:27,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 20:08:27,050 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:08:27,050 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:08:27,050 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:08:27,051 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-18 20:08:27,051 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:08:27,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:08:27,051 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:08:27,051 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:08:27,051 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:08:27,051 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:08:27,052 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:08:27,052 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:08:27,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:08:27,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:08:27,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:08:27,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:08:27,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:08:27,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:08:27,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:08:27,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:08:27,053 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:08:27,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:08:27,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:08:27,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:08:27,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:08:27,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:08:27,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:08:27,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:08:28,180 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:08:28,180 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:08:28,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:08:28 BoogieIcfgContainer [2020-08-18 20:08:28,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:08:28,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:08:28,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:08:28,195 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:08:28,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:08:26" (1/3) ... [2020-08-18 20:08:28,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3cf49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:08:28, skipping insertion in model container [2020-08-18 20:08:28,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:08:26" (2/3) ... [2020-08-18 20:08:28,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3cf49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:08:28, skipping insertion in model container [2020-08-18 20:08:28,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:08:28" (3/3) ... [2020-08-18 20:08:28,199 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product42.cil.c [2020-08-18 20:08:28,209 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:08:28,219 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:08:28,232 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:08:28,261 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:08:28,261 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:08:28,261 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:08:28,262 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:08:28,262 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:08:28,262 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:08:28,262 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:08:28,262 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:08:28,282 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-08-18 20:08:28,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:08:28,292 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:28,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:08:28,294 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:28,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:28,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1349332709, now seen corresponding path program 1 times [2020-08-18 20:08:28,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:28,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903620827] [2020-08-18 20:08:28,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:28,956 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:08:28,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:08:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:29,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:08:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:29,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:08:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:29,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:08:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:29,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:08:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:29,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:08:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:29,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:08:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:29,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:08:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:29,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:08:29,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903620827] [2020-08-18 20:08:29,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:08:29,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 20:08:29,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702757391] [2020-08-18 20:08:29,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 20:08:29,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:08:29,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 20:08:29,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:08:29,101 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 3 states. [2020-08-18 20:08:30,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:08:30,235 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2020-08-18 20:08:30,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:08:30,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 20:08:30,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:08:30,253 INFO L225 Difference]: With dead ends: 296 [2020-08-18 20:08:30,253 INFO L226 Difference]: Without dead ends: 160 [2020-08-18 20:08:30,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 20:08:30,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-18 20:08:30,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 127. [2020-08-18 20:08:30,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-18 20:08:30,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 148 transitions. [2020-08-18 20:08:30,351 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 148 transitions. Word has length 52 [2020-08-18 20:08:30,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:08:30,352 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 148 transitions. [2020-08-18 20:08:30,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 20:08:30,352 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 148 transitions. [2020-08-18 20:08:30,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 20:08:30,356 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:30,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:08:30,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:08:30,356 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:30,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:30,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1093164693, now seen corresponding path program 1 times [2020-08-18 20:08:30,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:30,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129489058] [2020-08-18 20:08:30,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:30,696 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:08:30,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:08:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:30,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:08:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:30,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:08:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:30,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:08:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:30,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:08:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:30,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:08:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:30,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:08:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:30,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 20:08:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:08:30,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129489058] [2020-08-18 20:08:30,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:08:30,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:08:30,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411834609] [2020-08-18 20:08:30,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:08:30,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:08:30,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:08:30,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:08:30,743 INFO L87 Difference]: Start difference. First operand 127 states and 148 transitions. Second operand 4 states. [2020-08-18 20:08:31,174 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:08:31,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:08:31,936 INFO L93 Difference]: Finished difference Result 225 states and 272 transitions. [2020-08-18 20:08:31,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 20:08:31,937 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 20:08:31,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:08:31,940 INFO L225 Difference]: With dead ends: 225 [2020-08-18 20:08:31,940 INFO L226 Difference]: Without dead ends: 144 [2020-08-18 20:08:31,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:08:31,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-18 20:08:31,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-18 20:08:31,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-18 20:08:31,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-08-18 20:08:31,980 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 53 [2020-08-18 20:08:31,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:08:31,980 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-08-18 20:08:31,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:08:31,981 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-08-18 20:08:31,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 20:08:31,983 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:31,983 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] [2020-08-18 20:08:31,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:08:31,983 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:31,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:31,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1756790423, now seen corresponding path program 1 times [2020-08-18 20:08:31,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:31,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885245232] [2020-08-18 20:08:31,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,359 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:08:32,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:08:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:08:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:08:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:08:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:08:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 20:08:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:08:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 20:08:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:32,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:08:32,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885245232] [2020-08-18 20:08:32,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:08:32,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:08:32,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205536155] [2020-08-18 20:08:32,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:08:32,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:08:32,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:08:32,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:08:32,495 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 8 states. [2020-08-18 20:08:32,848 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:08:33,162 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:33,442 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:33,664 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:34,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:08:34,761 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-18 20:08:34,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:08:34,766 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 20:08:34,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:08:34,771 INFO L225 Difference]: With dead ends: 238 [2020-08-18 20:08:34,771 INFO L226 Difference]: Without dead ends: 144 [2020-08-18 20:08:34,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:08:34,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-18 20:08:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-08-18 20:08:34,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-18 20:08:34,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 135 transitions. [2020-08-18 20:08:34,807 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 135 transitions. Word has length 58 [2020-08-18 20:08:34,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:08:34,808 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 135 transitions. [2020-08-18 20:08:34,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:08:34,808 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 135 transitions. [2020-08-18 20:08:34,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 20:08:34,810 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:34,810 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] [2020-08-18 20:08:34,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:08:34,811 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:34,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:34,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1312872772, now seen corresponding path program 1 times [2020-08-18 20:08:34,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:34,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155547740] [2020-08-18 20:08:34,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:35,098 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:08:35,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:08:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:35,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:08:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:35,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:08:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:35,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:08:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:35,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:08:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:35,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:08:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:35,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:08:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:35,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 20:08:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:35,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 20:08:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:35,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 20:08:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:08:35,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155547740] [2020-08-18 20:08:35,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:08:35,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:08:35,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391803337] [2020-08-18 20:08:35,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:08:35,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:08:35,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:08:35,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:08:35,210 INFO L87 Difference]: Start difference. First operand 118 states and 135 transitions. Second operand 6 states. [2020-08-18 20:08:35,565 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:08:36,690 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:08:37,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:08:37,321 INFO L93 Difference]: Finished difference Result 338 states and 414 transitions. [2020-08-18 20:08:37,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:08:37,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-08-18 20:08:37,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:08:37,326 INFO L225 Difference]: With dead ends: 338 [2020-08-18 20:08:37,326 INFO L226 Difference]: Without dead ends: 244 [2020-08-18 20:08:37,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:08:37,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-18 20:08:37,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 201. [2020-08-18 20:08:37,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-08-18 20:08:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2020-08-18 20:08:37,380 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 66 [2020-08-18 20:08:37,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:08:37,380 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2020-08-18 20:08:37,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:08:37,381 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2020-08-18 20:08:37,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-08-18 20:08:37,382 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:37,382 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] [2020-08-18 20:08:37,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:08:37,383 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:37,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:37,383 INFO L82 PathProgramCache]: Analyzing trace with hash 362669874, now seen corresponding path program 1 times [2020-08-18 20:08:37,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:37,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268363314] [2020-08-18 20:08:37,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,667 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:08:37,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:08:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:08:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:08:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:08:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:08:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 20:08:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:08:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:08:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:08:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 20:08:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 20:08:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 20:08:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:08:37,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268363314] [2020-08-18 20:08:37,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:08:37,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:08:37,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423815180] [2020-08-18 20:08:37,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:08:37,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:08:37,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:08:37,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:08:37,830 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand 8 states. [2020-08-18 20:08:38,203 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:08:39,631 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:39,914 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:40,160 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:40,401 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:08:41,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:08:41,080 INFO L93 Difference]: Finished difference Result 555 states and 692 transitions. [2020-08-18 20:08:41,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 20:08:41,081 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-08-18 20:08:41,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:08:41,087 INFO L225 Difference]: With dead ends: 555 [2020-08-18 20:08:41,088 INFO L226 Difference]: Without dead ends: 378 [2020-08-18 20:08:41,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:08:41,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-08-18 20:08:41,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 335. [2020-08-18 20:08:41,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-08-18 20:08:41,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 389 transitions. [2020-08-18 20:08:41,172 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 389 transitions. Word has length 80 [2020-08-18 20:08:41,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:08:41,173 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 389 transitions. [2020-08-18 20:08:41,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:08:41,173 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 389 transitions. [2020-08-18 20:08:41,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 20:08:41,175 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:41,175 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] [2020-08-18 20:08:41,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:08:41,175 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:41,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:41,175 INFO L82 PathProgramCache]: Analyzing trace with hash 871612076, now seen corresponding path program 1 times [2020-08-18 20:08:41,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:41,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63021696] [2020-08-18 20:08:41,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:41,447 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:08:41,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:08:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:41,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:08:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:41,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:08:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:41,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:08:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:41,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:08:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:41,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:08:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:41,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:08:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:41,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:08:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:41,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:08:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:41,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:08:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:41,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 20:08:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:41,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:08:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:41,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 20:08:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:08:41,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63021696] [2020-08-18 20:08:41,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:08:41,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:08:41,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969705281] [2020-08-18 20:08:41,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:08:41,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:08:41,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:08:41,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:08:41,567 INFO L87 Difference]: Start difference. First operand 335 states and 389 transitions. Second operand 9 states. [2020-08-18 20:08:41,960 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:08:42,519 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:08:44,207 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:08:45,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:08:45,726 INFO L93 Difference]: Finished difference Result 815 states and 1039 transitions. [2020-08-18 20:08:45,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 20:08:45,727 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-18 20:08:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:08:45,736 INFO L225 Difference]: With dead ends: 815 [2020-08-18 20:08:45,736 INFO L226 Difference]: Without dead ends: 627 [2020-08-18 20:08:45,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-08-18 20:08:45,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-08-18 20:08:45,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 556. [2020-08-18 20:08:45,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-18 20:08:45,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 666 transitions. [2020-08-18 20:08:45,849 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 666 transitions. Word has length 84 [2020-08-18 20:08:45,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:08:45,850 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 666 transitions. [2020-08-18 20:08:45,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:08:45,850 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 666 transitions. [2020-08-18 20:08:45,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 20:08:45,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:45,852 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] [2020-08-18 20:08:45,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:08:45,852 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:45,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:45,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1201377837, now seen corresponding path program 1 times [2020-08-18 20:08:45,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:45,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796468437] [2020-08-18 20:08:45,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:46,071 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:08:46,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:08:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:46,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:08:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:46,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:08:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:46,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:08:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:46,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:08:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:46,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:08:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:46,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:08:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:46,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:08:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:46,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:08:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:46,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:08:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:46,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 20:08:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:46,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:08:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:46,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 20:08:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:08:46,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796468437] [2020-08-18 20:08:46,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:08:46,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 20:08:46,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754570247] [2020-08-18 20:08:46,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 20:08:46,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:08:46,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 20:08:46,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 20:08:46,196 INFO L87 Difference]: Start difference. First operand 556 states and 666 transitions. Second operand 8 states. [2020-08-18 20:08:47,096 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:47,344 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:47,580 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:48,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:08:48,393 INFO L93 Difference]: Finished difference Result 1006 states and 1249 transitions. [2020-08-18 20:08:48,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 20:08:48,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-18 20:08:48,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:08:48,397 INFO L225 Difference]: With dead ends: 1006 [2020-08-18 20:08:48,397 INFO L226 Difference]: Without dead ends: 601 [2020-08-18 20:08:48,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:08:48,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-08-18 20:08:48,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 556. [2020-08-18 20:08:48,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-08-18 20:08:48,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 665 transitions. [2020-08-18 20:08:48,498 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 665 transitions. Word has length 84 [2020-08-18 20:08:48,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:08:48,498 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 665 transitions. [2020-08-18 20:08:48,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 20:08:48,499 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 665 transitions. [2020-08-18 20:08:48,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 20:08:48,500 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:48,500 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] [2020-08-18 20:08:48,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:08:48,501 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:48,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:48,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1128991279, now seen corresponding path program 1 times [2020-08-18 20:08:48,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:48,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27246099] [2020-08-18 20:08:48,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:48,780 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:08:48,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:08:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:48,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:08:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:48,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:08:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:48,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:08:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:08:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:48,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:08:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:48,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:08:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:48,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:08:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:48,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:08:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:48,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:08:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:48,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 20:08:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:48,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 20:08:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:48,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 20:08:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:08:48,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27246099] [2020-08-18 20:08:48,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:08:48,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 20:08:48,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318284526] [2020-08-18 20:08:48,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:08:48,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:08:48,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:08:48,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:08:48,921 INFO L87 Difference]: Start difference. First operand 556 states and 665 transitions. Second operand 12 states. [2020-08-18 20:08:49,434 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:08:49,694 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:08:49,921 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:08:50,573 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:08:50,822 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:08:51,091 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:08:51,327 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:08:52,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:08:52,285 INFO L93 Difference]: Finished difference Result 1144 states and 1416 transitions. [2020-08-18 20:08:52,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 20:08:52,287 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-18 20:08:52,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:08:52,290 INFO L225 Difference]: With dead ends: 1144 [2020-08-18 20:08:52,291 INFO L226 Difference]: Without dead ends: 612 [2020-08-18 20:08:52,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 20:08:52,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-08-18 20:08:52,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 563. [2020-08-18 20:08:52,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-08-18 20:08:52,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 672 transitions. [2020-08-18 20:08:52,428 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 672 transitions. Word has length 84 [2020-08-18 20:08:52,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:08:52,429 INFO L479 AbstractCegarLoop]: Abstraction has 563 states and 672 transitions. [2020-08-18 20:08:52,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:08:52,429 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 672 transitions. [2020-08-18 20:08:52,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-18 20:08:52,432 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:08:52,432 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:08:52,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:08:52,433 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:08:52,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:08:52,433 INFO L82 PathProgramCache]: Analyzing trace with hash -482545033, now seen corresponding path program 1 times [2020-08-18 20:08:52,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:08:52,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644129699] [2020-08-18 20:08:52,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:08:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:52,722 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:08:52,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:08:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:52,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:08:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:52,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:08:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:52,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:08:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:52,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:08:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:52,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:08:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:52,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:08:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:52,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:08:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:52,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:08:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:52,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:08:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:52,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:08:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:52,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:08:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:52,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 20:08:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:52,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 20:08:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:53,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 20:08:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:08:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 20:08:53,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644129699] [2020-08-18 20:08:53,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:08:53,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 20:08:53,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290385026] [2020-08-18 20:08:53,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:08:53,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:08:53,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:08:53,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:08:53,026 INFO L87 Difference]: Start difference. First operand 563 states and 672 transitions. Second operand 12 states. [2020-08-18 20:08:53,612 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:08:54,307 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:08:55,159 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:08:55,480 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:08:55,758 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:08:56,005 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:08:56,302 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:08:56,580 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:08:57,086 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 191 [2020-08-18 20:08:57,356 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:08:57,663 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:08:57,952 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 20:09:00,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:09:00,025 INFO L93 Difference]: Finished difference Result 1664 states and 2066 transitions. [2020-08-18 20:09:00,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 20:09:00,025 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-18 20:09:00,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:09:00,032 INFO L225 Difference]: With dead ends: 1664 [2020-08-18 20:09:00,032 INFO L226 Difference]: Without dead ends: 1125 [2020-08-18 20:09:00,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2020-08-18 20:09:00,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-18 20:09:00,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1062. [2020-08-18 20:09:00,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-08-18 20:09:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1253 transitions. [2020-08-18 20:09:00,197 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1253 transitions. Word has length 96 [2020-08-18 20:09:00,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:09:00,197 INFO L479 AbstractCegarLoop]: Abstraction has 1062 states and 1253 transitions. [2020-08-18 20:09:00,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:09:00,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1253 transitions. [2020-08-18 20:09:00,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-18 20:09:00,200 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:09:00,201 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:09:00,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:09:00,201 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:09:00,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:09:00,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1334976659, now seen corresponding path program 1 times [2020-08-18 20:09:00,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:09:00,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152565914] [2020-08-18 20:09:00,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:09:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:00,495 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:09:00,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:09:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:00,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:09:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:00,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:09:00,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:00,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:09:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:00,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:09:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:00,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:09:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:00,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 20:09:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:00,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:09:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:00,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:09:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:00,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:09:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:00,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:09:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:00,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:09:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:00,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:09:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:00,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 20:09:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:00,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 20:09:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:00,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 20:09:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 20:09:00,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152565914] [2020-08-18 20:09:00,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:09:00,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 20:09:00,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758738633] [2020-08-18 20:09:00,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 20:09:00,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:09:00,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 20:09:00,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:09:00,651 INFO L87 Difference]: Start difference. First operand 1062 states and 1253 transitions. Second operand 14 states. [2020-08-18 20:09:01,536 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:09:01,903 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:09:02,241 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:09:02,847 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:09:03,651 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:09:04,037 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:09:04,615 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:09:04,882 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:09:05,135 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:09:06,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:09:06,838 INFO L93 Difference]: Finished difference Result 2205 states and 2747 transitions. [2020-08-18 20:09:06,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 20:09:06,838 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 100 [2020-08-18 20:09:06,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:09:06,846 INFO L225 Difference]: With dead ends: 2205 [2020-08-18 20:09:06,846 INFO L226 Difference]: Without dead ends: 1167 [2020-08-18 20:09:06,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 20:09:06,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2020-08-18 20:09:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 978. [2020-08-18 20:09:07,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-08-18 20:09:07,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1149 transitions. [2020-08-18 20:09:07,068 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1149 transitions. Word has length 100 [2020-08-18 20:09:07,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:09:07,068 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1149 transitions. [2020-08-18 20:09:07,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 20:09:07,068 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1149 transitions. [2020-08-18 20:09:07,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-08-18 20:09:07,071 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:09:07,071 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:09:07,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:09:07,072 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:09:07,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:09:07,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1799494055, now seen corresponding path program 1 times [2020-08-18 20:09:07,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:09:07,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983418472] [2020-08-18 20:09:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:09:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:07,385 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 20:09:07,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:09:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:07,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:09:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:07,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:09:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:07,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:09:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:07,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:09:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:07,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:09:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:07,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:09:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:07,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:09:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:07,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:09:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:07,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:09:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:07,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:09:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:07,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:09:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:07,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:09:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:07,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 20:09:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:07,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 20:09:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:07,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 20:09:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:09:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:09:07,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983418472] [2020-08-18 20:09:07,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:09:07,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-18 20:09:07,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572680074] [2020-08-18 20:09:07,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 20:09:07,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:09:07,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 20:09:07,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-08-18 20:09:07,549 INFO L87 Difference]: Start difference. First operand 978 states and 1149 transitions. Second operand 13 states. [2020-08-18 20:09:08,304 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:09:08,536 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:09:08,754 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:09:09,828 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 20:09:10,304 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 20:09:10,627 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:09:10,895 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:09:11,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:09:11,572 INFO L93 Difference]: Finished difference Result 1688 states and 1988 transitions. [2020-08-18 20:09:11,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 20:09:11,573 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 100 [2020-08-18 20:09:11,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:09:11,574 INFO L225 Difference]: With dead ends: 1688 [2020-08-18 20:09:11,574 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 20:09:11,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2020-08-18 20:09:11,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 20:09:11,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 20:09:11,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 20:09:11,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 20:09:11,580 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 100 [2020-08-18 20:09:11,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:09:11,581 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 20:09:11,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 20:09:11,581 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 20:09:11,581 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 20:09:11,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:09:11,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 20:09:12,718 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-18 20:09:15,718 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-18 20:09:16,210 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 235 [2020-08-18 20:09:16,553 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-18 20:09:17,090 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 292 DAG size of output: 240 [2020-08-18 20:09:18,174 WARN L193 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-18 20:09:19,368 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 162 DAG size of output: 30 [2020-08-18 20:09:19,544 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-18 20:09:20,039 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 40 [2020-08-18 20:09:20,228 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-08-18 20:09:20,496 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 23 [2020-08-18 20:09:20,653 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 1 [2020-08-18 20:09:21,770 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 170 DAG size of output: 38 [2020-08-18 20:09:21,937 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 1 [2020-08-18 20:09:22,735 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 26 [2020-08-18 20:09:23,004 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 27 [2020-08-18 20:09:23,574 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30