/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product42.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:13:54,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:13:54,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:13:54,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:13:54,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:13:54,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:13:54,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:13:54,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:13:54,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:13:54,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:13:54,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:13:54,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:13:54,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:13:54,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:13:54,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:13:54,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:13:54,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:13:54,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:13:54,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:13:54,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:13:54,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:13:54,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:13:54,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:13:54,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:13:54,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:13:54,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:13:54,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:13:54,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:13:54,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:13:54,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:13:54,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:13:54,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:13:54,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:13:54,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:13:54,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:13:54,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:13:54,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:13:54,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:13:54,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:13:54,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:13:54,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:13:54,790 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 [2020-09-21 10:13:54,816 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:13:54,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:13:54,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:13:54,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:13:54,820 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:13:54,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:13:54,820 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:13:54,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:13:54,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:13:54,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:13:54,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:13:54,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:13:54,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:13:54,823 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:13:54,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:13:54,823 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:13:54,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:13:54,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:13:54,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:13:54,824 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:13:54,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:13:54,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:13:54,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:13:54,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:13:54,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:13:54,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:13:54,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:13:54,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:13:54,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:13:54,827 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 -> false [2020-09-21 10:13:55,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:13:55,291 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:13:55,295 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:13:55,297 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:13:55,297 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:13:55,299 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product42.cil.c [2020-09-21 10:13:55,385 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21c27e248/686fed335c9745af82593e5b92e209cf/FLAG12bb5f23f [2020-09-21 10:13:55,959 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:13:55,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product42.cil.c [2020-09-21 10:13:55,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21c27e248/686fed335c9745af82593e5b92e209cf/FLAG12bb5f23f [2020-09-21 10:13:56,242 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21c27e248/686fed335c9745af82593e5b92e209cf [2020-09-21 10:13:56,257 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:13:56,264 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:13:56,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:13:56,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:13:56,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:13:56,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:13:56" (1/1) ... [2020-09-21 10:13:56,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56344ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:56, skipping insertion in model container [2020-09-21 10:13:56,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:13:56" (1/1) ... [2020-09-21 10:13:56,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:13:56,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:13:56,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:13:56,740 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:13:56,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:13:56,955 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:13:56,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:56 WrapperNode [2020-09-21 10:13:56,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:13:56,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:13:56,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:13:56,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:13:56,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:56" (1/1) ... [2020-09-21 10:13:56,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:56" (1/1) ... [2020-09-21 10:13:56,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:56" (1/1) ... [2020-09-21 10:13:56,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:56" (1/1) ... [2020-09-21 10:13:57,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:56" (1/1) ... [2020-09-21 10:13:57,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:56" (1/1) ... [2020-09-21 10:13:57,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:56" (1/1) ... [2020-09-21 10:13:57,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:13:57,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:13:57,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:13:57,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:13:57,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:56" (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 [2020-09-21 10:13:57,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:13:57,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:13:57,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:13:57,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-09-21 10:13:57,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-09-21 10:13:57,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-09-21 10:13:57,134 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:13:57,134 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:13:57,134 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:13:57,134 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:13:57,134 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:13:57,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:13:57,135 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:13:57,135 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:13:57,135 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:13:57,135 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:13:57,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:13:57,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:13:57,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:13:57,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:13:57,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:13:57,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:13:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:13:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:13:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:13:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:13:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:13:57,138 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:13:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 10:13:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:13:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:13:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:13:57,139 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:13:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-21 10:13:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:13:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:13:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:13:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:13:57,141 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:13:57,141 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 10:13:57,141 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 10:13:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:13:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:13:57,141 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:13:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:13:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:13:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:13:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-09-21 10:13:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-09-21 10:13:57,142 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-09-21 10:13:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:13:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:13:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:13:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:13:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:13:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:13:57,143 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:13:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:13:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:13:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:13:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:13:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:13:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:13:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:13:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:13:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:13:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:13:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:13:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:13:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:13:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:13:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:13:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:13:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:13:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:13:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:13:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:13:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:13:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:13:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:13:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:13:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:13:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:13:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:13:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 10:13:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 10:13:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:13:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:13:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:13:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:13:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 10:13:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-21 10:13:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:13:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:13:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:13:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:13:58,133 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:13:58,133 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:13:58,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:13:58 BoogieIcfgContainer [2020-09-21 10:13:58,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:13:58,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:13:58,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:13:58,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:13:58,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:13:56" (1/3) ... [2020-09-21 10:13:58,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72018808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:13:58, skipping insertion in model container [2020-09-21 10:13:58,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:13:56" (2/3) ... [2020-09-21 10:13:58,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72018808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:13:58, skipping insertion in model container [2020-09-21 10:13:58,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:13:58" (3/3) ... [2020-09-21 10:13:58,148 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product42.cil.c [2020-09-21 10:13:58,160 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:13:58,171 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:13:58,193 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:13:58,225 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:13:58,225 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:13:58,225 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:13:58,226 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:13:58,226 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:13:58,226 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:13:58,226 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:13:58,226 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:13:58,253 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-09-21 10:13:58,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-21 10:13:58,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:13:58,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:13:58,267 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:13:58,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:13:58,273 INFO L82 PathProgramCache]: Analyzing trace with hash -318385319, now seen corresponding path program 1 times [2020-09-21 10:13:58,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:13:58,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746352737] [2020-09-21 10:13:58,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:13:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,061 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:13:59,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:13:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:13:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:13:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:13:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:13:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:13:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:13:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:13:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 10:13:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:13:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:13:59,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746352737] [2020-09-21 10:13:59,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:13:59,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:13:59,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423438575] [2020-09-21 10:13:59,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:13:59,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:13:59,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:13:59,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:13:59,250 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 4 states. [2020-09-21 10:14:00,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:00,316 INFO L93 Difference]: Finished difference Result 297 states and 378 transitions. [2020-09-21 10:14:00,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:14:00,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-09-21 10:14:00,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:00,336 INFO L225 Difference]: With dead ends: 297 [2020-09-21 10:14:00,336 INFO L226 Difference]: Without dead ends: 164 [2020-09-21 10:14:00,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:14:00,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-21 10:14:00,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 134. [2020-09-21 10:14:00,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-21 10:14:00,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 155 transitions. [2020-09-21 10:14:00,442 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 155 transitions. Word has length 59 [2020-09-21 10:14:00,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:00,443 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 155 transitions. [2020-09-21 10:14:00,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:14:00,443 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 155 transitions. [2020-09-21 10:14:00,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-21 10:14:00,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:00,451 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:14:00,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:14:00,451 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:00,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:00,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1634844471, now seen corresponding path program 1 times [2020-09-21 10:14:00,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:00,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253641915] [2020-09-21 10:14:00,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,935 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:00,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:00,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:14:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:14:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 10:14:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:01,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:14:01,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253641915] [2020-09-21 10:14:01,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:14:01,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:14:01,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699333630] [2020-09-21 10:14:01,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:14:01,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:01,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:14:01,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:14:01,020 INFO L87 Difference]: Start difference. First operand 134 states and 155 transitions. Second operand 5 states. [2020-09-21 10:14:01,540 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:02,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:02,394 INFO L93 Difference]: Finished difference Result 238 states and 286 transitions. [2020-09-21 10:14:02,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:14:02,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-09-21 10:14:02,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:02,398 INFO L225 Difference]: With dead ends: 238 [2020-09-21 10:14:02,398 INFO L226 Difference]: Without dead ends: 154 [2020-09-21 10:14:02,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:14:02,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-21 10:14:02,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 125. [2020-09-21 10:14:02,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-21 10:14:02,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 143 transitions. [2020-09-21 10:14:02,439 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 143 transitions. Word has length 60 [2020-09-21 10:14:02,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:02,439 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 143 transitions. [2020-09-21 10:14:02,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:14:02,440 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 143 transitions. [2020-09-21 10:14:02,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-21 10:14:02,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:02,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:14:02,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:14:02,443 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:02,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:02,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1075077358, now seen corresponding path program 1 times [2020-09-21 10:14:02,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:02,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145243758] [2020-09-21 10:14:02,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:02,890 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:02,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:02,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:02,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:02,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:02,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:02,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:02,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:14:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:02,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:03,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 10:14:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:03,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-21 10:14:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:14:03,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145243758] [2020-09-21 10:14:03,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:14:03,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:14:03,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593818739] [2020-09-21 10:14:03,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:14:03,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:03,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:14:03,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:14:03,029 INFO L87 Difference]: Start difference. First operand 125 states and 143 transitions. Second operand 9 states. [2020-09-21 10:14:03,414 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:03,816 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:04,132 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:04,442 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:05,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:05,817 INFO L93 Difference]: Finished difference Result 251 states and 305 transitions. [2020-09-21 10:14:05,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:14:05,818 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-09-21 10:14:05,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:05,822 INFO L225 Difference]: With dead ends: 251 [2020-09-21 10:14:05,822 INFO L226 Difference]: Without dead ends: 154 [2020-09-21 10:14:05,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:14:05,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-21 10:14:05,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 125. [2020-09-21 10:14:05,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-21 10:14:05,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 142 transitions. [2020-09-21 10:14:05,885 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 142 transitions. Word has length 65 [2020-09-21 10:14:05,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:05,888 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 142 transitions. [2020-09-21 10:14:05,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:14:05,888 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 142 transitions. [2020-09-21 10:14:05,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-21 10:14:05,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:05,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:14:05,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:14:05,892 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:05,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:05,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1759456211, now seen corresponding path program 1 times [2020-09-21 10:14:05,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:05,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450757858] [2020-09-21 10:14:05,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,275 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:06,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:14:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 10:14:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-21 10:14:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 10:14:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:06,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:14:06,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450757858] [2020-09-21 10:14:06,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:14:06,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:14:06,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084449084] [2020-09-21 10:14:06,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:14:06,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:06,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:14:06,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:14:06,415 INFO L87 Difference]: Start difference. First operand 125 states and 142 transitions. Second operand 7 states. [2020-09-21 10:14:06,834 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:08,617 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:09,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:09,043 INFO L93 Difference]: Finished difference Result 346 states and 428 transitions. [2020-09-21 10:14:09,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 10:14:09,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 73 [2020-09-21 10:14:09,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:09,047 INFO L225 Difference]: With dead ends: 346 [2020-09-21 10:14:09,047 INFO L226 Difference]: Without dead ends: 249 [2020-09-21 10:14:09,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:14:09,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-21 10:14:09,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 203. [2020-09-21 10:14:09,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-21 10:14:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 233 transitions. [2020-09-21 10:14:09,098 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 233 transitions. Word has length 73 [2020-09-21 10:14:09,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:09,099 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 233 transitions. [2020-09-21 10:14:09,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:14:09,099 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 233 transitions. [2020-09-21 10:14:09,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-21 10:14:09,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:09,102 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:14:09,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:14:09,102 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:09,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:09,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1988493165, now seen corresponding path program 1 times [2020-09-21 10:14:09,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:09,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468090036] [2020-09-21 10:14:09,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:09,519 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:09,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:09,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:09,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:09,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:09,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:09,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:09,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:14:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:09,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:09,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 10:14:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:09,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:09,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:09,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:14:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:09,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-21 10:14:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:09,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 10:14:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 10:14:09,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468090036] [2020-09-21 10:14:09,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:14:09,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:14:09,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769923754] [2020-09-21 10:14:09,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:14:09,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:09,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:14:09,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:14:09,672 INFO L87 Difference]: Start difference. First operand 203 states and 233 transitions. Second operand 9 states. [2020-09-21 10:14:10,099 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:10,948 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:11,921 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:12,276 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:12,841 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:13,156 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:13,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:13,518 INFO L93 Difference]: Finished difference Result 423 states and 515 transitions. [2020-09-21 10:14:13,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:14:13,519 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-21 10:14:13,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:13,521 INFO L225 Difference]: With dead ends: 423 [2020-09-21 10:14:13,522 INFO L226 Difference]: Without dead ends: 248 [2020-09-21 10:14:13,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:14:13,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-09-21 10:14:13,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 202. [2020-09-21 10:14:13,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-21 10:14:13,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 230 transitions. [2020-09-21 10:14:13,573 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 230 transitions. Word has length 87 [2020-09-21 10:14:13,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:13,574 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 230 transitions. [2020-09-21 10:14:13,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:14:13,574 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 230 transitions. [2020-09-21 10:14:13,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-21 10:14:13,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:13,576 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:14:13,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:14:13,576 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:13,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:13,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1941251357, now seen corresponding path program 1 times [2020-09-21 10:14:13,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:13,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099814392] [2020-09-21 10:14:13,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:13,900 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:13,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:13,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:13,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:13,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:13,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:13,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:13,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:14:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:13,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:13,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 10:14:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:13,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:14:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-21 10:14:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-21 10:14:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:14,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:14:14,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099814392] [2020-09-21 10:14:14,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:14:14,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:14:14,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492729412] [2020-09-21 10:14:14,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:14:14,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:14,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:14:14,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:14:14,059 INFO L87 Difference]: Start difference. First operand 202 states and 230 transitions. Second operand 9 states. [2020-09-21 10:14:15,181 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:15,514 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:15,806 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:16,122 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:17,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:17,043 INFO L93 Difference]: Finished difference Result 423 states and 519 transitions. [2020-09-21 10:14:17,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:14:17,043 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-09-21 10:14:17,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:17,046 INFO L225 Difference]: With dead ends: 423 [2020-09-21 10:14:17,046 INFO L226 Difference]: Without dead ends: 249 [2020-09-21 10:14:17,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:14:17,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-21 10:14:17,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 207. [2020-09-21 10:14:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-09-21 10:14:17,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 235 transitions. [2020-09-21 10:14:17,087 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 235 transitions. Word has length 103 [2020-09-21 10:14:17,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:17,088 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 235 transitions. [2020-09-21 10:14:17,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:14:17,088 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 235 transitions. [2020-09-21 10:14:17,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-21 10:14:17,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:17,090 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:14:17,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:14:17,090 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:17,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:17,090 INFO L82 PathProgramCache]: Analyzing trace with hash -108136485, now seen corresponding path program 1 times [2020-09-21 10:14:17,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:17,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544884319] [2020-09-21 10:14:17,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:17,406 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:17,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:17,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:17,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:17,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:17,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:17,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:17,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:14:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:17,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:17,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 10:14:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:17,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:17,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:17,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:14:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:17,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:17,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:17,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:17,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-21 10:14:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:17,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-21 10:14:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:14:17,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544884319] [2020-09-21 10:14:17,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:14:17,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-21 10:14:17,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473628877] [2020-09-21 10:14:17,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 10:14:17,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:17,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 10:14:17,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:14:17,628 INFO L87 Difference]: Start difference. First operand 207 states and 235 transitions. Second operand 11 states. [2020-09-21 10:14:18,220 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:18,601 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:18,934 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:19,806 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:20,114 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:20,426 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:21,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:21,244 INFO L93 Difference]: Finished difference Result 433 states and 530 transitions. [2020-09-21 10:14:21,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 10:14:21,245 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-09-21 10:14:21,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:21,248 INFO L225 Difference]: With dead ends: 433 [2020-09-21 10:14:21,248 INFO L226 Difference]: Without dead ends: 254 [2020-09-21 10:14:21,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:14:21,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-21 10:14:21,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 211. [2020-09-21 10:14:21,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-21 10:14:21,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 239 transitions. [2020-09-21 10:14:21,307 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 239 transitions. Word has length 103 [2020-09-21 10:14:21,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:21,307 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 239 transitions. [2020-09-21 10:14:21,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 10:14:21,307 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 239 transitions. [2020-09-21 10:14:21,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-21 10:14:21,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:21,310 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:14:21,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:14:21,310 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:21,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:21,311 INFO L82 PathProgramCache]: Analyzing trace with hash 861444538, now seen corresponding path program 1 times [2020-09-21 10:14:21,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:21,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169134878] [2020-09-21 10:14:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:21,645 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:21,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:21,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:21,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:21,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:21,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:21,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:21,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:14:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:21,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:21,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 10:14:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:21,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:21,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:21,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:14:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:21,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:21,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:21,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:21,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-21 10:14:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:21,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-21 10:14:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:14:21,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169134878] [2020-09-21 10:14:21,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:14:21,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:14:21,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311349521] [2020-09-21 10:14:21,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:14:21,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:21,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:14:21,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:14:21,824 INFO L87 Difference]: Start difference. First operand 211 states and 239 transitions. Second operand 7 states. [2020-09-21 10:14:22,275 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:22,880 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:24,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:24,781 INFO L93 Difference]: Finished difference Result 605 states and 753 transitions. [2020-09-21 10:14:24,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 10:14:24,781 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-09-21 10:14:24,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:24,785 INFO L225 Difference]: With dead ends: 605 [2020-09-21 10:14:24,785 INFO L226 Difference]: Without dead ends: 422 [2020-09-21 10:14:24,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-21 10:14:24,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2020-09-21 10:14:24,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 380. [2020-09-21 10:14:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-09-21 10:14:24,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 442 transitions. [2020-09-21 10:14:24,860 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 442 transitions. Word has length 103 [2020-09-21 10:14:24,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:24,860 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 442 transitions. [2020-09-21 10:14:24,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:14:24,861 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 442 transitions. [2020-09-21 10:14:24,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-21 10:14:24,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:24,863 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:14:24,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:14:24,863 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:24,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:24,864 INFO L82 PathProgramCache]: Analyzing trace with hash 2005328992, now seen corresponding path program 1 times [2020-09-21 10:14:24,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:24,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939105944] [2020-09-21 10:14:24,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,300 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:25,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:14:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:14:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-21 10:14:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:14:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-21 10:14:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-21 10:14:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:25,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:14:25,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939105944] [2020-09-21 10:14:25,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:14:25,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 10:14:25,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386528800] [2020-09-21 10:14:25,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:14:25,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:25,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:14:25,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:14:25,501 INFO L87 Difference]: Start difference. First operand 380 states and 442 transitions. Second operand 12 states. [2020-09-21 10:14:26,132 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:26,887 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:28,005 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:28,384 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:28,705 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:29,065 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:29,415 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:30,533 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:30,845 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:14:31,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:31,661 INFO L93 Difference]: Finished difference Result 1052 states and 1296 transitions. [2020-09-21 10:14:31,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-21 10:14:31,662 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 107 [2020-09-21 10:14:31,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:31,668 INFO L225 Difference]: With dead ends: 1052 [2020-09-21 10:14:31,668 INFO L226 Difference]: Without dead ends: 769 [2020-09-21 10:14:31,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=296, Invalid=964, Unknown=0, NotChecked=0, Total=1260 [2020-09-21 10:14:31,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-09-21 10:14:31,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 650. [2020-09-21 10:14:31,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2020-09-21 10:14:31,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 748 transitions. [2020-09-21 10:14:31,849 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 748 transitions. Word has length 107 [2020-09-21 10:14:31,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:31,851 INFO L479 AbstractCegarLoop]: Abstraction has 650 states and 748 transitions. [2020-09-21 10:14:31,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:14:31,852 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 748 transitions. [2020-09-21 10:14:31,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-21 10:14:31,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:14:31,856 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:14:31,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:14:31,857 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:14:31,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:14:31,857 INFO L82 PathProgramCache]: Analyzing trace with hash 2092455891, now seen corresponding path program 1 times [2020-09-21 10:14:31,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:14:31,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067076318] [2020-09-21 10:14:31,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:14:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,234 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:32,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:14:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:14:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:14:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:14:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:14:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 10:14:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:14:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:14:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:14:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 10:14:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:14:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-21 10:14:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:14:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-21 10:14:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-21 10:14:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:14:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-21 10:14:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-21 10:14:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:14:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 10:14:32,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067076318] [2020-09-21 10:14:32,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:14:32,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-21 10:14:32,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091104016] [2020-09-21 10:14:32,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-21 10:14:32,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:14:32,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-21 10:14:32,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-09-21 10:14:32,582 INFO L87 Difference]: Start difference. First operand 650 states and 748 transitions. Second operand 16 states. [2020-09-21 10:14:33,142 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:33,524 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:33,857 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:34,187 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:34,966 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:35,326 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:36,211 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:37,036 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:14:37,653 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:38,141 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:38,476 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:14:38,854 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:39,436 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:39,976 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:40,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:14:40,221 INFO L93 Difference]: Finished difference Result 1024 states and 1200 transitions. [2020-09-21 10:14:40,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-21 10:14:40,222 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 151 [2020-09-21 10:14:40,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:14:40,223 INFO L225 Difference]: With dead ends: 1024 [2020-09-21 10:14:40,223 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 10:14:40,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=424, Invalid=1468, Unknown=0, NotChecked=0, Total=1892 [2020-09-21 10:14:40,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 10:14:40,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 10:14:40,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 10:14:40,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 10:14:40,231 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 151 [2020-09-21 10:14:40,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:14:40,231 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 10:14:40,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-21 10:14:40,232 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 10:14:40,232 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 10:14:40,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:14:40,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 10:14:40,436 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-09-21 10:14:40,659 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:40,969 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 193 [2020-09-21 10:14:41,142 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:41,312 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:41,489 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 10:14:42,909 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 238 DAG size of output: 217 [2020-09-21 10:14:43,074 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:43,375 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 193 [2020-09-21 10:14:43,538 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:44,931 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 239 DAG size of output: 222 [2020-09-21 10:14:45,099 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 10:14:45,265 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:45,439 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:45,608 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-09-21 10:14:45,772 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:45,945 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:46,105 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:46,273 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-09-21 10:14:46,443 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 10:14:46,605 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:46,773 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:46,936 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:14:47,102 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:48,823 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 256 DAG size of output: 233 [2020-09-21 10:14:48,986 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:49,324 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2020-09-21 10:14:49,486 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:49,781 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 193 [2020-09-21 10:14:50,080 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 193 [2020-09-21 10:14:50,237 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:50,397 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:14:50,732 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 196 [2020-09-21 10:14:50,895 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:51,053 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:14:51,198 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:14:52,905 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 253 DAG size of output: 231 [2020-09-21 10:14:53,090 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:14:53,250 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-09-21 10:14:53,419 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 194 [2020-09-21 10:14:53,586 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 10:14:53,755 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:54,087 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2020-09-21 10:14:54,248 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:14:54,410 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-21 10:14:54,568 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 192