/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:56:39,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:56:39,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:56:39,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:56:39,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:56:39,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:56:39,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:56:39,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:56:39,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:56:39,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:56:39,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:56:39,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:56:39,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:56:39,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:56:39,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:56:39,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:56:39,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:56:39,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:56:39,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:56:39,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:56:39,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:56:39,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:56:39,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:56:39,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:56:39,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:56:39,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:56:39,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:56:39,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:56:39,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:56:39,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:56:39,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:56:39,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:56:39,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:56:39,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:56:39,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:56:39,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:56:39,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:56:39,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:56:39,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:56:39,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:56:39,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:56:39,901 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 11:56:39,928 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:56:39,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:56:39,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:56:39,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:56:39,930 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:56:39,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:56:39,931 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:56:39,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:56:39,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:56:39,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:56:39,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:56:39,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:56:39,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:56:39,932 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:56:39,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:56:39,932 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:56:39,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:56:39,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:56:39,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:56:39,933 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:56:39,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:56:39,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:56:39,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:56:39,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:56:39,934 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:56:39,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:56:39,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:56:39,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:56:39,935 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:56:39,935 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 11:56:40,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:56:40,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:56:40,282 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:56:40,283 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:56:40,284 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:56:40,285 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2020-08-18 11:56:40,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3cb9c99fa/a64506ec2be542b3b93a71b2fc7580d3/FLAG12390d2ec [2020-08-18 11:56:40,885 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:56:40,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product39.cil.c [2020-08-18 11:56:40,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3cb9c99fa/a64506ec2be542b3b93a71b2fc7580d3/FLAG12390d2ec [2020-08-18 11:56:41,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3cb9c99fa/a64506ec2be542b3b93a71b2fc7580d3 [2020-08-18 11:56:41,206 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:56:41,207 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:56:41,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:56:41,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:56:41,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:56:41,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:56:41" (1/1) ... [2020-08-18 11:56:41,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c09893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:56:41, skipping insertion in model container [2020-08-18 11:56:41,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:56:41" (1/1) ... [2020-08-18 11:56:41,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:56:41,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:56:41,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:56:41,799 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:56:41,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:56:41,958 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:56:41,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:56:41 WrapperNode [2020-08-18 11:56:41,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:56:41,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:56:41,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:56:41,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:56:41,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:56:41" (1/1) ... [2020-08-18 11:56:41,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:56:41" (1/1) ... [2020-08-18 11:56:41,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:56:41" (1/1) ... [2020-08-18 11:56:41,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:56:41" (1/1) ... [2020-08-18 11:56:42,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:56:41" (1/1) ... [2020-08-18 11:56:42,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:56:41" (1/1) ... [2020-08-18 11:56:42,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:56:41" (1/1) ... [2020-08-18 11:56:42,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:56:42,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:56:42,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:56:42,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:56:42,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:56:41" (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 11:56:42,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:56:42,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:56:42,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 11:56:42,146 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 11:56:42,146 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 11:56:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 11:56:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 11:56:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 11:56:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 11:56:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 11:56:42,148 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 11:56:42,148 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 11:56:42,149 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 11:56:42,149 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 11:56:42,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:56:42,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 11:56:42,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 11:56:42,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 11:56:42,151 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 11:56:42,151 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 11:56:42,151 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 11:56:42,151 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 11:56:42,152 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 11:56:42,152 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 11:56:42,152 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 11:56:42,153 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 11:56:42,153 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 11:56:42,154 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 11:56:42,154 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 11:56:42,154 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 11:56:42,154 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 11:56:42,155 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 11:56:42,155 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 11:56:42,155 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 11:56:42,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 11:56:42,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 11:56:42,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 11:56:42,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 11:56:42,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 11:56:42,156 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 11:56:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:56:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:56:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 11:56:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 11:56:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 11:56:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 11:56:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 11:56:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 11:56:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 11:56:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 11:56:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:56:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 11:56:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 11:56:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 11:56:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 11:56:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 11:56:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 11:56:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 11:56:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 11:56:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 11:56:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 11:56:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 11:56:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:56:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 11:56:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 11:56:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 11:56:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 11:56:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 11:56:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 11:56:42,163 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 11:56:42,163 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 11:56:42,163 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 11:56:42,164 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 11:56:42,164 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 11:56:42,164 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 11:56:42,165 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 11:56:42,165 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:56:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:56:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 11:56:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:56:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:56:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:56:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:56:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 11:56:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:56:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 11:56:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 11:56:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:56:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 11:56:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 11:56:42,167 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 11:56:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:56:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:56:42,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:56:43,305 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:56:43,305 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:56:43,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:56:43 BoogieIcfgContainer [2020-08-18 11:56:43,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:56:43,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:56:43,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:56:43,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:56:43,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:56:41" (1/3) ... [2020-08-18 11:56:43,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5736c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:56:43, skipping insertion in model container [2020-08-18 11:56:43,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:56:41" (2/3) ... [2020-08-18 11:56:43,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5736c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:56:43, skipping insertion in model container [2020-08-18 11:56:43,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:56:43" (3/3) ... [2020-08-18 11:56:43,319 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product39.cil.c [2020-08-18 11:56:43,329 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:56:43,337 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:56:43,349 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:56:43,371 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:56:43,372 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:56:43,372 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:56:43,372 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:56:43,372 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:56:43,372 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:56:43,372 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:56:43,373 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:56:43,396 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-08-18 11:56:43,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 11:56:43,406 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:56:43,407 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] [2020-08-18 11:56:43,408 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:56:43,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:56:43,414 INFO L82 PathProgramCache]: Analyzing trace with hash 652232891, now seen corresponding path program 1 times [2020-08-18 11:56:43,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:56:43,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151270867] [2020-08-18 11:56:43,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:56:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:44,158 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:56:44,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:56:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:44,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:56:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:44,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:56:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:44,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:56:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:44,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:56:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:44,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:56:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:44,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 11:56:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:44,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 11:56:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:44,300 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 11:56:44,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151270867] [2020-08-18 11:56:44,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:56:44,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:56:44,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113131236] [2020-08-18 11:56:44,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:56:44,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:56:44,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:56:44,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:56:44,329 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 4 states. [2020-08-18 11:56:45,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:56:45,503 INFO L93 Difference]: Finished difference Result 301 states and 396 transitions. [2020-08-18 11:56:45,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 11:56:45,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 11:56:45,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:56:45,520 INFO L225 Difference]: With dead ends: 301 [2020-08-18 11:56:45,521 INFO L226 Difference]: Without dead ends: 168 [2020-08-18 11:56:45,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:56:45,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-18 11:56:45,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 134. [2020-08-18 11:56:45,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-18 11:56:45,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 159 transitions. [2020-08-18 11:56:45,616 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 159 transitions. Word has length 51 [2020-08-18 11:56:45,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:56:45,617 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 159 transitions. [2020-08-18 11:56:45,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:56:45,617 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 159 transitions. [2020-08-18 11:56:45,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 11:56:45,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:56:45,621 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 11:56:45,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:56:45,621 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:56:45,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:56:45,622 INFO L82 PathProgramCache]: Analyzing trace with hash -564528421, now seen corresponding path program 1 times [2020-08-18 11:56:45,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:56:45,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489974482] [2020-08-18 11:56:45,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:56:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:45,960 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:56:45,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:56:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:45,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:56:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:45,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:56:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:45,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:56:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:45,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:56:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:46,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:56:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:46,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 11:56:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:46,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:56:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:46,018 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 11:56:46,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489974482] [2020-08-18 11:56:46,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:56:46,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 11:56:46,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634209584] [2020-08-18 11:56:46,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 11:56:46,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:56:46,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 11:56:46,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:56:46,022 INFO L87 Difference]: Start difference. First operand 134 states and 159 transitions. Second operand 5 states. [2020-08-18 11:56:46,465 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:56:47,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:56:47,377 INFO L93 Difference]: Finished difference Result 240 states and 299 transitions. [2020-08-18 11:56:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 11:56:47,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 11:56:47,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:56:47,382 INFO L225 Difference]: With dead ends: 240 [2020-08-18 11:56:47,382 INFO L226 Difference]: Without dead ends: 158 [2020-08-18 11:56:47,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:56:47,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-18 11:56:47,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 125. [2020-08-18 11:56:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-18 11:56:47,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2020-08-18 11:56:47,418 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 52 [2020-08-18 11:56:47,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:56:47,419 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2020-08-18 11:56:47,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 11:56:47,419 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2020-08-18 11:56:47,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 11:56:47,421 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:56:47,421 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] [2020-08-18 11:56:47,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:56:47,422 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:56:47,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:56:47,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1211879035, now seen corresponding path program 1 times [2020-08-18 11:56:47,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:56:47,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489262825] [2020-08-18 11:56:47,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:56:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:47,732 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:56:47,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:56:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:47,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:56:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:47,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:56:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:47,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:56:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:47,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:56:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:47,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:56:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:47,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 11:56:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:47,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 11:56:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:47,826 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 11:56:47,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489262825] [2020-08-18 11:56:47,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:56:47,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:56:47,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493581645] [2020-08-18 11:56:47,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:56:47,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:56:47,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:56:47,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:56:47,829 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand 9 states. [2020-08-18 11:56:48,198 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:56:48,523 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:56:48,768 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:56:49,000 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:56:49,802 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:56:51,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:56:51,626 INFO L93 Difference]: Finished difference Result 423 states and 537 transitions. [2020-08-18 11:56:51,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 11:56:51,627 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 11:56:51,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:56:51,632 INFO L225 Difference]: With dead ends: 423 [2020-08-18 11:56:51,632 INFO L226 Difference]: Without dead ends: 326 [2020-08-18 11:56:51,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 11:56:51,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-18 11:56:51,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 265. [2020-08-18 11:56:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-08-18 11:56:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2020-08-18 11:56:51,711 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 56 [2020-08-18 11:56:51,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:56:51,712 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2020-08-18 11:56:51,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:56:51,712 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2020-08-18 11:56:51,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 11:56:51,716 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:56:51,716 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] [2020-08-18 11:56:51,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:56:51,716 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:56:51,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:56:51,717 INFO L82 PathProgramCache]: Analyzing trace with hash -773448372, now seen corresponding path program 1 times [2020-08-18 11:56:51,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:56:51,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605237356] [2020-08-18 11:56:51,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:56:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:52,102 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:56:52,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:56:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:52,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:56:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:52,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:56:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:52,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:56:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:52,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:56:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:52,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:56:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:52,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 11:56:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:52,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 11:56:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:52,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 11:56:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:52,214 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 11:56:52,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605237356] [2020-08-18 11:56:52,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:56:52,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:56:52,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41634725] [2020-08-18 11:56:52,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:56:52,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:56:52,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:56:52,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:56:52,217 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand 9 states. [2020-08-18 11:56:52,598 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:56:53,609 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:56:53,991 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:56:54,301 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:56:54,617 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:56:55,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:56:55,927 INFO L93 Difference]: Finished difference Result 845 states and 1123 transitions. [2020-08-18 11:56:55,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 11:56:55,928 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-18 11:56:55,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:56:55,935 INFO L225 Difference]: With dead ends: 845 [2020-08-18 11:56:55,935 INFO L226 Difference]: Without dead ends: 608 [2020-08-18 11:56:55,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 11:56:55,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2020-08-18 11:56:56,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 478. [2020-08-18 11:56:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-18 11:56:56,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 588 transitions. [2020-08-18 11:56:56,109 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 588 transitions. Word has length 62 [2020-08-18 11:56:56,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:56:56,110 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 588 transitions. [2020-08-18 11:56:56,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:56:56,110 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 588 transitions. [2020-08-18 11:56:56,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 11:56:56,114 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:56:56,115 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 11:56:56,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:56:56,115 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:56:56,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:56:56,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1032831448, now seen corresponding path program 1 times [2020-08-18 11:56:56,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:56:56,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604920473] [2020-08-18 11:56:56,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:56:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:56,400 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:56:56,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:56:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:56,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:56:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:56,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:56:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:56,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:56:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:56,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:56:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:56,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:56:56,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:56,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:56:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:56,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 11:56:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:56,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 11:56:56,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:56,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 11:56:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:56,549 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 11:56:56,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604920473] [2020-08-18 11:56:56,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:56:56,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 11:56:56,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678627008] [2020-08-18 11:56:56,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 11:56:56,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:56:56,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 11:56:56,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:56:56,556 INFO L87 Difference]: Start difference. First operand 478 states and 588 transitions. Second operand 10 states. [2020-08-18 11:56:56,918 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:56:57,938 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:56:58,233 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:56:58,504 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:56:59,169 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:00,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:00,366 INFO L93 Difference]: Finished difference Result 1339 states and 1842 transitions. [2020-08-18 11:57:00,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-18 11:57:00,369 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-18 11:57:00,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:00,378 INFO L225 Difference]: With dead ends: 1339 [2020-08-18 11:57:00,378 INFO L226 Difference]: Without dead ends: 889 [2020-08-18 11:57:00,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-18 11:57:00,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-18 11:57:00,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 693. [2020-08-18 11:57:00,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-08-18 11:57:00,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 847 transitions. [2020-08-18 11:57:00,526 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 847 transitions. Word has length 66 [2020-08-18 11:57:00,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:00,527 INFO L479 AbstractCegarLoop]: Abstraction has 693 states and 847 transitions. [2020-08-18 11:57:00,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 11:57:00,527 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 847 transitions. [2020-08-18 11:57:00,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 11:57:00,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:00,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:00,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:57:00,530 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:00,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:00,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1961211398, now seen corresponding path program 1 times [2020-08-18 11:57:00,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:00,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628160265] [2020-08-18 11:57:00,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:00,816 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:00,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:00,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:00,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:00,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:00,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:00,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:00,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:57:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:00,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:57:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:00,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:00,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:00,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:00,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:00,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 11:57:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:00,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 11:57:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:00,993 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 11:57:00,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628160265] [2020-08-18 11:57:00,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:00,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 11:57:00,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878112349] [2020-08-18 11:57:00,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 11:57:00,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:00,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 11:57:00,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:57:00,996 INFO L87 Difference]: Start difference. First operand 693 states and 847 transitions. Second operand 10 states. [2020-08-18 11:57:01,413 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:02,416 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:02,671 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 11:57:03,002 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:03,280 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:05,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:05,359 INFO L93 Difference]: Finished difference Result 2350 states and 3369 transitions. [2020-08-18 11:57:05,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 11:57:05,360 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 11:57:05,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:05,372 INFO L225 Difference]: With dead ends: 2350 [2020-08-18 11:57:05,373 INFO L226 Difference]: Without dead ends: 1685 [2020-08-18 11:57:05,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-18 11:57:05,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-08-18 11:57:05,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1247. [2020-08-18 11:57:05,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2020-08-18 11:57:05,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1522 transitions. [2020-08-18 11:57:05,656 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1522 transitions. Word has length 88 [2020-08-18 11:57:05,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:05,656 INFO L479 AbstractCegarLoop]: Abstraction has 1247 states and 1522 transitions. [2020-08-18 11:57:05,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 11:57:05,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1522 transitions. [2020-08-18 11:57:05,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 11:57:05,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:05,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:05,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:57:05,664 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:05,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:05,665 INFO L82 PathProgramCache]: Analyzing trace with hash 608275001, now seen corresponding path program 1 times [2020-08-18 11:57:05,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:05,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016644254] [2020-08-18 11:57:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:05,965 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:05,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:05,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:05,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:05,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:06,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:06,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:06,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:57:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:06,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:57:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:06,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:06,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:06,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:06,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:06,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 11:57:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:06,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 11:57:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:06,166 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 11:57:06,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016644254] [2020-08-18 11:57:06,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:06,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 11:57:06,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579096656] [2020-08-18 11:57:06,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 11:57:06,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:06,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 11:57:06,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:57:06,174 INFO L87 Difference]: Start difference. First operand 1247 states and 1522 transitions. Second operand 10 states. [2020-08-18 11:57:07,581 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:07,847 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 11:57:08,134 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:08,395 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:09,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:09,621 INFO L93 Difference]: Finished difference Result 2904 states and 3892 transitions. [2020-08-18 11:57:09,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 11:57:09,623 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-18 11:57:09,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:09,634 INFO L225 Difference]: With dead ends: 2904 [2020-08-18 11:57:09,634 INFO L226 Difference]: Without dead ends: 1685 [2020-08-18 11:57:09,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 11:57:09,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2020-08-18 11:57:09,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1287. [2020-08-18 11:57:09,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1287 states. [2020-08-18 11:57:09,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1562 transitions. [2020-08-18 11:57:09,892 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1562 transitions. Word has length 88 [2020-08-18 11:57:09,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:09,895 INFO L479 AbstractCegarLoop]: Abstraction has 1287 states and 1562 transitions. [2020-08-18 11:57:09,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 11:57:09,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1562 transitions. [2020-08-18 11:57:09,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 11:57:09,898 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:09,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:09,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 11:57:09,899 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:09,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:09,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1309874875, now seen corresponding path program 1 times [2020-08-18 11:57:09,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:09,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279856256] [2020-08-18 11:57:09,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:10,149 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:10,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:10,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:10,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:10,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:10,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:10,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:10,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:57:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:10,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:57:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:10,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:10,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:10,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:10,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:10,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 11:57:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:10,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 11:57:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:10,321 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 11:57:10,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279856256] [2020-08-18 11:57:10,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:10,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 11:57:10,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770710971] [2020-08-18 11:57:10,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 11:57:10,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:10,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 11:57:10,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:57:10,324 INFO L87 Difference]: Start difference. First operand 1287 states and 1562 transitions. Second operand 12 states. [2020-08-18 11:57:10,889 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:11,156 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:11,376 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:12,165 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:12,428 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:12,667 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:13,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:13,954 INFO L93 Difference]: Finished difference Result 2600 states and 3450 transitions. [2020-08-18 11:57:13,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 11:57:13,954 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-08-18 11:57:13,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:13,963 INFO L225 Difference]: With dead ends: 2600 [2020-08-18 11:57:13,964 INFO L226 Difference]: Without dead ends: 1341 [2020-08-18 11:57:13,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 11:57:13,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-08-18 11:57:14,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1063. [2020-08-18 11:57:14,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2020-08-18 11:57:14,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1258 transitions. [2020-08-18 11:57:14,184 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1258 transitions. Word has length 88 [2020-08-18 11:57:14,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:14,185 INFO L479 AbstractCegarLoop]: Abstraction has 1063 states and 1258 transitions. [2020-08-18 11:57:14,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 11:57:14,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1258 transitions. [2020-08-18 11:57:14,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 11:57:14,191 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:14,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:14,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 11:57:14,192 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:14,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:14,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1814435734, now seen corresponding path program 1 times [2020-08-18 11:57:14,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:14,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695298428] [2020-08-18 11:57:14,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:14,508 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:14,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:14,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:14,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:14,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:14,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:14,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:14,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:57:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:14,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:57:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:14,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 11:57:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:14,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:14,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:14,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:14,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:14,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 11:57:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:14,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 11:57:14,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:14,611 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 11:57:14,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695298428] [2020-08-18 11:57:14,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:57:14,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:57:14,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550044220] [2020-08-18 11:57:14,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:57:14,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:14,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:57:14,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:57:14,613 INFO L87 Difference]: Start difference. First operand 1063 states and 1258 transitions. Second operand 8 states. [2020-08-18 11:57:14,954 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:17,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:17,587 INFO L93 Difference]: Finished difference Result 2130 states and 2835 transitions. [2020-08-18 11:57:17,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 11:57:17,588 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 92 [2020-08-18 11:57:17,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:17,601 INFO L225 Difference]: With dead ends: 2130 [2020-08-18 11:57:17,601 INFO L226 Difference]: Without dead ends: 2127 [2020-08-18 11:57:17,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-18 11:57:17,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2020-08-18 11:57:17,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 1652. [2020-08-18 11:57:17,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1652 states. [2020-08-18 11:57:17,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 1981 transitions. [2020-08-18 11:57:17,949 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 1981 transitions. Word has length 92 [2020-08-18 11:57:17,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:17,952 INFO L479 AbstractCegarLoop]: Abstraction has 1652 states and 1981 transitions. [2020-08-18 11:57:17,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:57:17,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 1981 transitions. [2020-08-18 11:57:17,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-08-18 11:57:17,961 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:17,961 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:57:17,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 11:57:17,962 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:17,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:17,962 INFO L82 PathProgramCache]: Analyzing trace with hash -374585462, now seen corresponding path program 1 times [2020-08-18 11:57:17,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:17,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785221664] [2020-08-18 11:57:17,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,250 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:18,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:57:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:57:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:57:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:57:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 11:57:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 11:57:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 11:57:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 11:57:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 11:57:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 11:57:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 11:57:18,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785221664] [2020-08-18 11:57:18,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:57:18,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 11:57:18,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721818384] [2020-08-18 11:57:18,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 11:57:18,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:18,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 11:57:18,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 11:57:18,671 INFO L87 Difference]: Start difference. First operand 1652 states and 1981 transitions. Second operand 19 states. [2020-08-18 11:57:19,377 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:19,850 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 11:57:20,099 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 11:57:20,346 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 11:57:21,069 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:21,699 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:22,106 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:24,398 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:24,642 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:24,904 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:25,207 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:25,465 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:25,725 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:26,024 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:26,263 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:27,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:27,263 INFO L93 Difference]: Finished difference Result 3563 states and 4503 transitions. [2020-08-18 11:57:27,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-18 11:57:27,264 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 150 [2020-08-18 11:57:27,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:27,275 INFO L225 Difference]: With dead ends: 3563 [2020-08-18 11:57:27,276 INFO L226 Difference]: Without dead ends: 1939 [2020-08-18 11:57:27,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=608, Invalid=2814, Unknown=0, NotChecked=0, Total=3422 [2020-08-18 11:57:27,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1939 states. [2020-08-18 11:57:27,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1939 to 1598. [2020-08-18 11:57:27,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1598 states. [2020-08-18 11:57:27,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 1879 transitions. [2020-08-18 11:57:27,639 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 1879 transitions. Word has length 150 [2020-08-18 11:57:27,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:27,639 INFO L479 AbstractCegarLoop]: Abstraction has 1598 states and 1879 transitions. [2020-08-18 11:57:27,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 11:57:27,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 1879 transitions. [2020-08-18 11:57:27,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 11:57:27,647 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:27,647 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:27,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 11:57:27,648 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:27,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:27,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1053600099, now seen corresponding path program 1 times [2020-08-18 11:57:27,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:27,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726722084] [2020-08-18 11:57:27,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:27,994 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:27,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:28,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:57:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:57:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:57:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:57:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 11:57:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 11:57:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 11:57:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 11:57:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 11:57:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:28,246 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-18 11:57:28,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726722084] [2020-08-18 11:57:28,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:57:28,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 11:57:28,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838714267] [2020-08-18 11:57:28,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 11:57:28,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:28,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 11:57:28,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:57:28,249 INFO L87 Difference]: Start difference. First operand 1598 states and 1879 transitions. Second operand 14 states. [2020-08-18 11:57:28,871 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:57:29,109 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:29,332 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 11:57:29,838 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:31,152 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:32,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:32,964 INFO L93 Difference]: Finished difference Result 2988 states and 3684 transitions. [2020-08-18 11:57:32,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-18 11:57:32,965 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 154 [2020-08-18 11:57:32,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:32,977 INFO L225 Difference]: With dead ends: 2988 [2020-08-18 11:57:32,977 INFO L226 Difference]: Without dead ends: 1734 [2020-08-18 11:57:32,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2020-08-18 11:57:32,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2020-08-18 11:57:33,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1482. [2020-08-18 11:57:33,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1482 states. [2020-08-18 11:57:33,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1650 transitions. [2020-08-18 11:57:33,289 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1650 transitions. Word has length 154 [2020-08-18 11:57:33,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:33,290 INFO L479 AbstractCegarLoop]: Abstraction has 1482 states and 1650 transitions. [2020-08-18 11:57:33,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 11:57:33,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1650 transitions. [2020-08-18 11:57:33,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-08-18 11:57:33,297 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:57:33,297 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:57:33,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 11:57:33,298 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:57:33,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:57:33,298 INFO L82 PathProgramCache]: Analyzing trace with hash -2018968461, now seen corresponding path program 1 times [2020-08-18 11:57:33,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:57:33,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92456179] [2020-08-18 11:57:33,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:57:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,568 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:57:33,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:57:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:57:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:57:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:57:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:57:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 11:57:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:57:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:57:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:57:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:57:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 11:57:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 11:57:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 11:57:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:57:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:57:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:57:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 11:57:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-18 11:57:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:57:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-08-18 11:57:33,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92456179] [2020-08-18 11:57:33,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:57:33,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 11:57:33,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325379968] [2020-08-18 11:57:33,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 11:57:33,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:57:33,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 11:57:33,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:57:33,752 INFO L87 Difference]: Start difference. First operand 1482 states and 1650 transitions. Second operand 10 states. [2020-08-18 11:57:34,576 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:57:36,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:57:36,276 INFO L93 Difference]: Finished difference Result 1918 states and 2270 transitions. [2020-08-18 11:57:36,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-18 11:57:36,276 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 160 [2020-08-18 11:57:36,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:57:36,277 INFO L225 Difference]: With dead ends: 1918 [2020-08-18 11:57:36,277 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 11:57:36,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 11:57:36,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 11:57:36,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 11:57:36,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 11:57:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 11:57:36,283 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 160 [2020-08-18 11:57:36,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:57:36,284 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 11:57:36,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 11:57:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 11:57:36,284 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 11:57:36,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 11:57:36,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.