/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:04:00,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:04:00,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:04:00,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:04:00,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:04:00,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:04:00,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:04:00,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:04:00,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:04:00,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:04:00,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:04:00,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:04:00,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:04:00,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:04:00,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:04:00,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:04:00,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:04:00,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:04:00,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:04:00,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:04:00,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:04:00,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:04:00,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:04:00,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:04:00,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:04:00,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:04:00,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:04:00,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:04:00,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:04:00,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:04:00,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:04:00,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:04:00,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:04:00,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:04:00,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:04:00,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:04:00,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:04:00,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:04:00,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:04:00,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:04:00,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:04:00,896 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 12:04:00,939 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:04:00,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:04:00,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:04:00,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:04:00,942 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:04:00,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:04:00,943 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:04:00,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:04:00,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:04:00,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:04:00,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:04:00,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:04:00,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:04:00,946 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:04:00,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:04:00,946 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:04:00,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:04:00,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:04:00,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:04:00,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:04:00,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:04:00,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:04:00,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:04:00,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:04:00,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:04:00,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:04:00,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:04:00,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:04:00,948 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:04:00,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:04:01,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:04:01,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:04:01,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:04:01,275 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:04:01,275 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:04:01,276 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2020-08-18 12:04:01,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2fbba07b5/f40584e0de8544c5bcff470a9f71c9e1/FLAG84166b454 [2020-08-18 12:04:01,880 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:04:01,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product52.cil.c [2020-08-18 12:04:01,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2fbba07b5/f40584e0de8544c5bcff470a9f71c9e1/FLAG84166b454 [2020-08-18 12:04:02,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2fbba07b5/f40584e0de8544c5bcff470a9f71c9e1 [2020-08-18 12:04:02,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:04:02,176 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:04:02,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:04:02,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:04:02,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:04:02,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:04:02" (1/1) ... [2020-08-18 12:04:02,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465728a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:04:02, skipping insertion in model container [2020-08-18 12:04:02,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:04:02" (1/1) ... [2020-08-18 12:04:02,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:04:02,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:04:02,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:04:02,673 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:04:02,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:04:02,871 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:04:02,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:04:02 WrapperNode [2020-08-18 12:04:02,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:04:02,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:04:02,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:04:02,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:04:02,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:04:02" (1/1) ... [2020-08-18 12:04:02,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:04:02" (1/1) ... [2020-08-18 12:04:02,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:04:02" (1/1) ... [2020-08-18 12:04:02,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:04:02" (1/1) ... [2020-08-18 12:04:02,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:04:02" (1/1) ... [2020-08-18 12:04:02,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:04:02" (1/1) ... [2020-08-18 12:04:02,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:04:02" (1/1) ... [2020-08-18 12:04:02,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:04:02,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:04:02,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:04:02,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:04:02,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:04:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:04:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:04:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:04:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 12:04:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 12:04:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 12:04:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 12:04:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 12:04:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 12:04:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 12:04:03,037 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 12:04:03,038 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 12:04:03,038 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 12:04:03,038 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 12:04:03,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:04:03,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 12:04:03,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 12:04:03,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 12:04:03,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 12:04:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 12:04:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 12:04:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 12:04:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 12:04:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 12:04:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 12:04:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 12:04:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 12:04:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 12:04:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 12:04:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 12:04:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 12:04:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 12:04:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 12:04:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 12:04:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 12:04:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 12:04:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 12:04:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 12:04:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 12:04:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 12:04:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 12:04:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 12:04:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 12:04:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 12:04:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 12:04:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:04:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:04:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 12:04:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 12:04:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 12:04:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 12:04:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 12:04:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 12:04:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 12:04:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:04:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 12:04:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 12:04:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:04:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 12:04:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 12:04:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:04:03,048 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 12:04:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 12:04:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:04:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 12:04:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 12:04:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 12:04:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 12:04:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 12:04:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 12:04:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 12:04:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 12:04:03,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 12:04:03,051 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 12:04:03,051 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 12:04:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 12:04:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 12:04:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 12:04:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:04:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 12:04:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 12:04:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 12:04:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 12:04:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 12:04:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 12:04:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 12:04:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 12:04:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 12:04:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 12:04:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 12:04:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 12:04:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 12:04:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 12:04:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 12:04:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 12:04:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 12:04:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 12:04:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 12:04:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 12:04:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 12:04:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:04:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 12:04:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:04:04,200 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:04:04,201 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 12:04:04,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:04:04 BoogieIcfgContainer [2020-08-18 12:04:04,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:04:04,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:04:04,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:04:04,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:04:04,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:04:02" (1/3) ... [2020-08-18 12:04:04,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e365bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:04:04, skipping insertion in model container [2020-08-18 12:04:04,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:04:02" (2/3) ... [2020-08-18 12:04:04,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e365bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:04:04, skipping insertion in model container [2020-08-18 12:04:04,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:04:04" (3/3) ... [2020-08-18 12:04:04,221 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product52.cil.c [2020-08-18 12:04:04,232 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:04:04,243 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:04:04,258 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:04:04,293 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:04:04,294 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:04:04,294 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:04:04,294 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:04:04,294 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:04:04,294 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:04:04,294 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:04:04,295 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:04:04,317 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-08-18 12:04:04,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 12:04:04,328 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:04,329 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] [2020-08-18 12:04:04,330 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:04,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:04,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1089631799, now seen corresponding path program 1 times [2020-08-18 12:04:04,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:04,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681889024] [2020-08-18 12:04:04,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:04,990 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:04,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:04:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:04:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:04:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:04:05,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681889024] [2020-08-18 12:04:05,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:04:05,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:04:05,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12527725] [2020-08-18 12:04:05,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:04:05,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:05,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:04:05,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:04:05,165 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 4 states. [2020-08-18 12:04:06,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:06,388 INFO L93 Difference]: Finished difference Result 328 states and 422 transitions. [2020-08-18 12:04:06,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 12:04:06,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 12:04:06,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:06,406 INFO L225 Difference]: With dead ends: 328 [2020-08-18 12:04:06,407 INFO L226 Difference]: Without dead ends: 181 [2020-08-18 12:04:06,412 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 [2020-08-18 12:04:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-18 12:04:06,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 148. [2020-08-18 12:04:06,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-08-18 12:04:06,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 174 transitions. [2020-08-18 12:04:06,543 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 174 transitions. Word has length 59 [2020-08-18 12:04:06,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:06,543 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 174 transitions. [2020-08-18 12:04:06,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:04:06,544 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 174 transitions. [2020-08-18 12:04:06,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 12:04:06,557 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:06,558 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] [2020-08-18 12:04:06,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:04:06,558 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:06,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:06,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1975382983, now seen corresponding path program 1 times [2020-08-18 12:04:06,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:06,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732600561] [2020-08-18 12:04:06,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:06,948 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:06,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:06,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:06,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:06,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:06,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:06,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:06,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 12:04:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:06,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:06,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 12:04:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:06,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 12:04:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:04:07,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732600561] [2020-08-18 12:04:07,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:04:07,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:04:07,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687216170] [2020-08-18 12:04:07,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:04:07,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:07,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:04:07,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:04:07,010 INFO L87 Difference]: Start difference. First operand 148 states and 174 transitions. Second operand 5 states. [2020-08-18 12:04:07,464 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:08,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:08,330 INFO L93 Difference]: Finished difference Result 263 states and 322 transitions. [2020-08-18 12:04:08,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:04:08,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 12:04:08,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:08,335 INFO L225 Difference]: With dead ends: 263 [2020-08-18 12:04:08,335 INFO L226 Difference]: Without dead ends: 171 [2020-08-18 12:04:08,337 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 [2020-08-18 12:04:08,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-18 12:04:08,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 139. [2020-08-18 12:04:08,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-18 12:04:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2020-08-18 12:04:08,381 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 60 [2020-08-18 12:04:08,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:08,381 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2020-08-18 12:04:08,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:04:08,382 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2020-08-18 12:04:08,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 12:04:08,383 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:08,383 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] [2020-08-18 12:04:08,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:04:08,384 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:08,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:08,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1007889166, now seen corresponding path program 1 times [2020-08-18 12:04:08,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:08,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989635281] [2020-08-18 12:04:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,727 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:08,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:04:08,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:04:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 12:04:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:04:08,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989635281] [2020-08-18 12:04:08,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:04:08,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:04:08,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255466754] [2020-08-18 12:04:08,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:04:08,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:08,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:04:08,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:04:08,877 INFO L87 Difference]: Start difference. First operand 139 states and 162 transitions. Second operand 9 states. [2020-08-18 12:04:09,272 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:09,603 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:09,897 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:10,147 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:11,126 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:13,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:13,026 INFO L93 Difference]: Finished difference Result 466 states and 577 transitions. [2020-08-18 12:04:13,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 12:04:13,027 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-18 12:04:13,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:13,034 INFO L225 Difference]: With dead ends: 466 [2020-08-18 12:04:13,034 INFO L226 Difference]: Without dead ends: 355 [2020-08-18 12:04:13,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:04:13,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-08-18 12:04:13,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 294. [2020-08-18 12:04:13,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-08-18 12:04:13,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 356 transitions. [2020-08-18 12:04:13,116 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 356 transitions. Word has length 65 [2020-08-18 12:04:13,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:13,116 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 356 transitions. [2020-08-18 12:04:13,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:04:13,117 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 356 transitions. [2020-08-18 12:04:13,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 12:04:13,118 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:13,119 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] [2020-08-18 12:04:13,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:04:13,119 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:13,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:13,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1025318737, now seen corresponding path program 1 times [2020-08-18 12:04:13,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:13,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898327651] [2020-08-18 12:04:13,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:13,431 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:13,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:13,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:13,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:13,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:13,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:13,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:13,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:04:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:13,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 12:04:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:13,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:13,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 12:04:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:13,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 12:04:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:13,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 12:04:13,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898327651] [2020-08-18 12:04:13,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:04:13,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:04:13,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099981650] [2020-08-18 12:04:13,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:04:13,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:13,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:04:13,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:04:13,587 INFO L87 Difference]: Start difference. First operand 294 states and 356 transitions. Second operand 9 states. [2020-08-18 12:04:13,985 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:14,738 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:15,620 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:15,945 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:16,218 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:16,482 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:17,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:17,331 INFO L93 Difference]: Finished difference Result 755 states and 986 transitions. [2020-08-18 12:04:17,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 12:04:17,332 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 12:04:17,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:17,338 INFO L225 Difference]: With dead ends: 755 [2020-08-18 12:04:17,338 INFO L226 Difference]: Without dead ends: 489 [2020-08-18 12:04:17,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 12:04:17,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-08-18 12:04:17,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 421. [2020-08-18 12:04:17,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-08-18 12:04:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 507 transitions. [2020-08-18 12:04:17,436 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 507 transitions. Word has length 70 [2020-08-18 12:04:17,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:17,436 INFO L479 AbstractCegarLoop]: Abstraction has 421 states and 507 transitions. [2020-08-18 12:04:17,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:04:17,436 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 507 transitions. [2020-08-18 12:04:17,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 12:04:17,438 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:17,439 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] [2020-08-18 12:04:17,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:04:17,439 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:17,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:17,439 INFO L82 PathProgramCache]: Analyzing trace with hash -2085443903, now seen corresponding path program 1 times [2020-08-18 12:04:17,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:17,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112170905] [2020-08-18 12:04:17,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:17,698 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:17,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:17,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:17,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:17,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:17,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:17,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:17,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:04:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:17,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:17,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 12:04:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:17,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:17,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:17,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:17,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:17,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 12:04:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:17,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 12:04:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:04:17,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112170905] [2020-08-18 12:04:17,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:04:17,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:04:17,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024429678] [2020-08-18 12:04:17,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:04:17,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:17,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:04:17,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:04:17,837 INFO L87 Difference]: Start difference. First operand 421 states and 507 transitions. Second operand 9 states. [2020-08-18 12:04:19,037 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:19,278 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:04:19,530 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:19,768 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:20,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:20,557 INFO L93 Difference]: Finished difference Result 903 states and 1149 transitions. [2020-08-18 12:04:20,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 12:04:20,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 12:04:20,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:20,562 INFO L225 Difference]: With dead ends: 903 [2020-08-18 12:04:20,562 INFO L226 Difference]: Without dead ends: 510 [2020-08-18 12:04:20,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 12:04:20,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-08-18 12:04:20,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 434. [2020-08-18 12:04:20,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-08-18 12:04:20,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2020-08-18 12:04:20,654 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 93 [2020-08-18 12:04:20,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:20,655 INFO L479 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2020-08-18 12:04:20,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:04:20,655 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2020-08-18 12:04:20,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 12:04:20,657 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:20,657 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] [2020-08-18 12:04:20,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:04:20,658 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:20,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:20,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1383844029, now seen corresponding path program 1 times [2020-08-18 12:04:20,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:20,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692434691] [2020-08-18 12:04:20,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:20,928 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:20,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:20,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:20,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:20,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:20,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:20,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:20,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:04:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:20,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:21,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 12:04:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:21,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:21,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:21,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:21,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:21,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 12:04:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:21,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 12:04:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:21,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:04:21,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692434691] [2020-08-18 12:04:21,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:04:21,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 12:04:21,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138961161] [2020-08-18 12:04:21,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 12:04:21,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:21,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 12:04:21,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:04:21,082 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand 11 states. [2020-08-18 12:04:22,101 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:22,532 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:22,865 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:23,668 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:23,950 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:24,193 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:25,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:25,104 INFO L93 Difference]: Finished difference Result 930 states and 1198 transitions. [2020-08-18 12:04:25,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 12:04:25,105 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-18 12:04:25,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:25,110 INFO L225 Difference]: With dead ends: 930 [2020-08-18 12:04:25,110 INFO L226 Difference]: Without dead ends: 524 [2020-08-18 12:04:25,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 12:04:25,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-08-18 12:04:25,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 442. [2020-08-18 12:04:25,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-08-18 12:04:25,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 529 transitions. [2020-08-18 12:04:25,192 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 529 transitions. Word has length 93 [2020-08-18 12:04:25,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:25,193 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 529 transitions. [2020-08-18 12:04:25,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 12:04:25,193 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 529 transitions. [2020-08-18 12:04:25,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 12:04:25,194 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:25,195 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] [2020-08-18 12:04:25,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:04:25,195 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:25,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:25,196 INFO L82 PathProgramCache]: Analyzing trace with hash 341636868, now seen corresponding path program 1 times [2020-08-18 12:04:25,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:25,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1046219639] [2020-08-18 12:04:25,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:25,463 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:25,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:25,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:25,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:25,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:25,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:25,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:25,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:04:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:25,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:25,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 12:04:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:25,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:25,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:25,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:25,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:25,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 12:04:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:25,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 12:04:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:04:25,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1046219639] [2020-08-18 12:04:25,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:04:25,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 12:04:25,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663190603] [2020-08-18 12:04:25,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 12:04:25,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:25,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 12:04:25,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:04:25,616 INFO L87 Difference]: Start difference. First operand 442 states and 529 transitions. Second operand 7 states. [2020-08-18 12:04:25,945 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:26,533 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:28,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:28,569 INFO L93 Difference]: Finished difference Result 1411 states and 1828 transitions. [2020-08-18 12:04:28,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 12:04:28,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-18 12:04:28,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:28,582 INFO L225 Difference]: With dead ends: 1411 [2020-08-18 12:04:28,583 INFO L226 Difference]: Without dead ends: 997 [2020-08-18 12:04:28,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 12:04:28,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-08-18 12:04:28,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 919. [2020-08-18 12:04:28,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-08-18 12:04:28,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1115 transitions. [2020-08-18 12:04:28,832 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1115 transitions. Word has length 93 [2020-08-18 12:04:28,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:28,832 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1115 transitions. [2020-08-18 12:04:28,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 12:04:28,833 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1115 transitions. [2020-08-18 12:04:28,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 12:04:28,839 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:28,840 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] [2020-08-18 12:04:28,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 12:04:28,840 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:28,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:28,841 INFO L82 PathProgramCache]: Analyzing trace with hash -643321942, now seen corresponding path program 1 times [2020-08-18 12:04:28,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:28,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756806913] [2020-08-18 12:04:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,217 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:29,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:04:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 12:04:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 12:04:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 12:04:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 12:04:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:29,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:04:29,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756806913] [2020-08-18 12:04:29,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:04:29,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 12:04:29,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585384946] [2020-08-18 12:04:29,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 12:04:29,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:29,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 12:04:29,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:04:29,372 INFO L87 Difference]: Start difference. First operand 919 states and 1115 transitions. Second operand 12 states. [2020-08-18 12:04:29,823 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:30,486 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:31,239 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:31,554 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:31,804 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:32,085 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:32,348 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:34,563 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:34,856 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:35,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:35,418 INFO L93 Difference]: Finished difference Result 2611 states and 3380 transitions. [2020-08-18 12:04:35,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 12:04:35,419 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-18 12:04:35,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:35,430 INFO L225 Difference]: With dead ends: 2611 [2020-08-18 12:04:35,431 INFO L226 Difference]: Without dead ends: 1912 [2020-08-18 12:04:35,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 12:04:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2020-08-18 12:04:35,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1606. [2020-08-18 12:04:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1606 states. [2020-08-18 12:04:35,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1936 transitions. [2020-08-18 12:04:35,759 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1936 transitions. Word has length 97 [2020-08-18 12:04:35,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:35,762 INFO L479 AbstractCegarLoop]: Abstraction has 1606 states and 1936 transitions. [2020-08-18 12:04:35,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 12:04:35,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1936 transitions. [2020-08-18 12:04:35,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-08-18 12:04:35,769 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:35,770 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:04:35,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 12:04:35,770 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:35,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:35,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1477147143, now seen corresponding path program 1 times [2020-08-18 12:04:35,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:35,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735945435] [2020-08-18 12:04:35,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,108 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:36,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:04:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 12:04:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:04:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:04:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 12:04:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 12:04:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 12:04:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:04:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 12:04:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-18 12:04:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:36,407 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 12:04:36,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735945435] [2020-08-18 12:04:36,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:04:36,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 12:04:36,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856809808] [2020-08-18 12:04:36,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 12:04:36,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:36,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 12:04:36,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:04:36,410 INFO L87 Difference]: Start difference. First operand 1606 states and 1936 transitions. Second operand 16 states. [2020-08-18 12:04:37,062 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:37,414 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 12:04:37,695 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 12:04:37,959 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 12:04:38,700 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:39,017 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:39,397 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:04:39,711 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:04:40,840 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:41,509 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:41,791 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:42,110 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:42,694 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:43,088 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:43,452 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:04:44,220 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:44,548 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:04:45,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:45,396 INFO L93 Difference]: Finished difference Result 3483 states and 4326 transitions. [2020-08-18 12:04:45,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-18 12:04:45,397 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 159 [2020-08-18 12:04:45,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:45,415 INFO L225 Difference]: With dead ends: 3483 [2020-08-18 12:04:45,416 INFO L226 Difference]: Without dead ends: 2085 [2020-08-18 12:04:45,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=589, Invalid=2167, Unknown=0, NotChecked=0, Total=2756 [2020-08-18 12:04:45,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2020-08-18 12:04:45,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 1893. [2020-08-18 12:04:45,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1893 states. [2020-08-18 12:04:45,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2238 transitions. [2020-08-18 12:04:45,903 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2238 transitions. Word has length 159 [2020-08-18 12:04:45,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:45,903 INFO L479 AbstractCegarLoop]: Abstraction has 1893 states and 2238 transitions. [2020-08-18 12:04:45,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 12:04:45,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2238 transitions. [2020-08-18 12:04:45,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-08-18 12:04:45,918 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:45,919 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 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] [2020-08-18 12:04:45,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 12:04:45,919 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:45,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:45,919 INFO L82 PathProgramCache]: Analyzing trace with hash 430621663, now seen corresponding path program 1 times [2020-08-18 12:04:45,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:45,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428830553] [2020-08-18 12:04:45,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,246 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:46,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:04:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 12:04:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:04:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:04:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 12:04:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:04:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:04:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 12:04:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-18 12:04:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:46,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:04:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:04:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 12:04:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-18 12:04:46,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 12:04:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-08-18 12:04:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-18 12:04:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 83 proven. 29 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2020-08-18 12:04:46,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428830553] [2020-08-18 12:04:46,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:04:46,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 12:04:46,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38668549] [2020-08-18 12:04:46,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 12:04:46,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:46,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 12:04:46,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 12:04:46,794 INFO L87 Difference]: Start difference. First operand 1893 states and 2238 transitions. Second operand 15 states. [2020-08-18 12:04:48,213 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:04:48,481 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:48,723 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:48,965 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:49,995 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:51,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:51,727 INFO L93 Difference]: Finished difference Result 5185 states and 6381 transitions. [2020-08-18 12:04:51,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 12:04:51,730 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 277 [2020-08-18 12:04:51,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:51,750 INFO L225 Difference]: With dead ends: 5185 [2020-08-18 12:04:51,750 INFO L226 Difference]: Without dead ends: 3002 [2020-08-18 12:04:51,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 97 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-18 12:04:51,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3002 states. [2020-08-18 12:04:52,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3002 to 2604. [2020-08-18 12:04:52,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2604 states. [2020-08-18 12:04:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 3157 transitions. [2020-08-18 12:04:52,332 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 3157 transitions. Word has length 277 [2020-08-18 12:04:52,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:04:52,333 INFO L479 AbstractCegarLoop]: Abstraction has 2604 states and 3157 transitions. [2020-08-18 12:04:52,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 12:04:52,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 3157 transitions. [2020-08-18 12:04:52,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-18 12:04:52,343 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:04:52,344 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 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] [2020-08-18 12:04:52,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 12:04:52,344 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:04:52,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:04:52,345 INFO L82 PathProgramCache]: Analyzing trace with hash 154824420, now seen corresponding path program 1 times [2020-08-18 12:04:52,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:04:52,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395109497] [2020-08-18 12:04:52,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:04:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,671 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:04:52,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:04:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:04:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:04:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:04:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:04:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 12:04:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:04:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:04:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 12:04:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:04:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:04:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 12:04:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:04:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-18 12:04:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:04:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:04:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 12:04:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 12:04:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-18 12:04:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:04:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-18 12:04:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:04:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:04:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:04:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-18 12:04:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:52,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-18 12:04:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:04:53,043 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-08-18 12:04:53,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395109497] [2020-08-18 12:04:53,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:04:53,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 12:04:53,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217729867] [2020-08-18 12:04:53,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 12:04:53,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:04:53,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 12:04:53,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:04:53,049 INFO L87 Difference]: Start difference. First operand 2604 states and 3157 transitions. Second operand 16 states. [2020-08-18 12:04:53,724 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:54,094 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:54,355 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:54,596 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:55,343 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:56,385 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:04:56,708 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:56,976 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:57,622 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:58,444 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:58,696 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:04:59,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:04:59,760 INFO L93 Difference]: Finished difference Result 4984 states and 6131 transitions. [2020-08-18 12:04:59,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 12:04:59,761 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-18 12:04:59,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:04:59,777 INFO L225 Difference]: With dead ends: 4984 [2020-08-18 12:04:59,778 INFO L226 Difference]: Without dead ends: 2611 [2020-08-18 12:04:59,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 12:04:59,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2020-08-18 12:05:00,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2535. [2020-08-18 12:05:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2535 states. [2020-08-18 12:05:00,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2535 states to 2535 states and 3048 transitions. [2020-08-18 12:05:00,326 INFO L78 Accepts]: Start accepts. Automaton has 2535 states and 3048 transitions. Word has length 283 [2020-08-18 12:05:00,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:05:00,326 INFO L479 AbstractCegarLoop]: Abstraction has 2535 states and 3048 transitions. [2020-08-18 12:05:00,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 12:05:00,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2535 states and 3048 transitions. [2020-08-18 12:05:00,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-08-18 12:05:00,339 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:05:00,339 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 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] [2020-08-18 12:05:00,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 12:05:00,340 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:05:00,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:05:00,340 INFO L82 PathProgramCache]: Analyzing trace with hash -344117058, now seen corresponding path program 1 times [2020-08-18 12:05:00,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:05:00,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228328093] [2020-08-18 12:05:00,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:05:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat