/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:11:09,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:11:09,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:11:09,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:11:09,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:11:09,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:11:09,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:11:09,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:11:09,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:11:09,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:11:09,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:11:09,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:11:09,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:11:09,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:11:09,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:11:09,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:11:09,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:11:09,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:11:09,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:11:09,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:11:09,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:11:09,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:11:09,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:11:09,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:11:09,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:11:09,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:11:09,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:11:09,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:11:09,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:11:09,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:11:09,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:11:09,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:11:09,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:11:09,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:11:09,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:11:09,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:11:09,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:11:09,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:11:09,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:11:09,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:11:09,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:11:09,932 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 16:11:09,969 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:11:09,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:11:09,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:11:09,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:11:09,971 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:11:09,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:11:09,972 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:11:09,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:11:09,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:11:09,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:11:09,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:11:09,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:11:09,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:11:09,974 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:11:09,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:11:09,975 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:11:09,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:11:09,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:11:09,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:11:09,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:11:09,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:11:09,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:11:09,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:11:09,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:11:09,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:11:09,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:11:09,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:11:09,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:11:09,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:11:09,977 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 [2020-08-18 16:11:10,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:11:10,283 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:11:10,287 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:11:10,288 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:11:10,288 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:11:10,289 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c [2020-08-18 16:11:10,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bb38d4a9/87d5db42f6af46558b8e89e4b48d5950/FLAG6a6f90266 [2020-08-18 16:11:10,856 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:11:10,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product37.cil.c [2020-08-18 16:11:10,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bb38d4a9/87d5db42f6af46558b8e89e4b48d5950/FLAG6a6f90266 [2020-08-18 16:11:11,210 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bb38d4a9/87d5db42f6af46558b8e89e4b48d5950 [2020-08-18 16:11:11,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:11:11,220 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:11:11,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:11:11,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:11:11,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:11:11,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:11:11" (1/1) ... [2020-08-18 16:11:11,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3451cfe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:11, skipping insertion in model container [2020-08-18 16:11:11,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:11:11" (1/1) ... [2020-08-18 16:11:11,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:11:11,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:11:11,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:11:11,706 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:11:11,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:11:11,860 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:11:11,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:11 WrapperNode [2020-08-18 16:11:11,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:11:11,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:11:11,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:11:11,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:11:11,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:11" (1/1) ... [2020-08-18 16:11:11,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:11" (1/1) ... [2020-08-18 16:11:11,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:11" (1/1) ... [2020-08-18 16:11:11,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:11" (1/1) ... [2020-08-18 16:11:11,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:11" (1/1) ... [2020-08-18 16:11:11,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:11" (1/1) ... [2020-08-18 16:11:11,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:11" (1/1) ... [2020-08-18 16:11:11,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:11:11,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:11:11,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:11:11,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:11:11,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:11" (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 16:11:12,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:11:12,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:11:12,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:11:12,020 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:11:12,021 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:11:12,021 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:11:12,021 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:11:12,021 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:11:12,021 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:11:12,021 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:11:12,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 16:11:12,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 16:11:12,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 16:11:12,022 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:11:12,022 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:11:12,022 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:11:12,023 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:11:12,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:11:12,023 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:11:12,023 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:11:12,023 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:11:12,023 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:11:12,023 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:11:12,024 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:11:12,024 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:11:12,024 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:11:12,024 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:11:12,024 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:11:12,024 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:11:12,025 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:11:12,025 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:11:12,025 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:11:12,025 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:11:12,025 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:11:12,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:11:12,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:11:12,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:11:12,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:11:12,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:11:12,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:11:12,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:11:12,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:11:12,027 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:11:12,027 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:11:12,027 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:11:12,027 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:11:12,028 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:11:12,028 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:11:12,028 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:11:12,028 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:11:12,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:11:12,028 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:11:12,029 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:11:12,029 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 16:11:12,029 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 16:11:12,029 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 16:11:12,029 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:11:12,029 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:11:12,030 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:11:12,030 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:11:12,030 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:11:12,030 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:11:12,030 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:11:12,030 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:11:12,030 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:11:12,031 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:11:12,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:11:12,031 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:11:12,031 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:11:12,031 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:11:12,031 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:11:12,032 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:11:12,032 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:11:12,032 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:11:12,032 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:11:12,032 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:11:12,032 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:11:12,033 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:11:12,033 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:11:12,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:11:12,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:11:12,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:11:12,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:11:12,034 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:11:12,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:11:12,034 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:11:12,034 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:11:12,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:11:12,034 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:11:12,034 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:11:12,035 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:11:12,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:11:12,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:11:12,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:11:13,229 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:11:13,229 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:11:13,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:11:13 BoogieIcfgContainer [2020-08-18 16:11:13,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:11:13,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:11:13,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:11:13,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:11:13,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:11:11" (1/3) ... [2020-08-18 16:11:13,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a551e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:11:13, skipping insertion in model container [2020-08-18 16:11:13,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:11:11" (2/3) ... [2020-08-18 16:11:13,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a551e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:11:13, skipping insertion in model container [2020-08-18 16:11:13,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:11:13" (3/3) ... [2020-08-18 16:11:13,243 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product37.cil.c [2020-08-18 16:11:13,254 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:11:13,262 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:11:13,276 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:11:13,301 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:11:13,301 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:11:13,301 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:11:13,301 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:11:13,301 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:11:13,301 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:11:13,302 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:11:13,302 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:11:13,323 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-08-18 16:11:13,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 16:11:13,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:13,334 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 16:11:13,335 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:13,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:13,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1869542645, now seen corresponding path program 1 times [2020-08-18 16:11:13,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:13,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914368515] [2020-08-18 16:11:13,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,013 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:14,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:11:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 16:11:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:11:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:14,178 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 16:11:14,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914368515] [2020-08-18 16:11:14,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:14,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:11:14,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108319900] [2020-08-18 16:11:14,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:11:14,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:14,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:11:14,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:11:14,207 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 4 states. [2020-08-18 16:11:15,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:15,293 INFO L93 Difference]: Finished difference Result 299 states and 383 transitions. [2020-08-18 16:11:15,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:11:15,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 16:11:15,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:15,310 INFO L225 Difference]: With dead ends: 299 [2020-08-18 16:11:15,310 INFO L226 Difference]: Without dead ends: 164 [2020-08-18 16:11:15,315 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 16:11:15,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-08-18 16:11:15,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 136. [2020-08-18 16:11:15,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-18 16:11:15,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 159 transitions. [2020-08-18 16:11:15,421 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 159 transitions. Word has length 59 [2020-08-18 16:11:15,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:15,422 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 159 transitions. [2020-08-18 16:11:15,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:11:15,422 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 159 transitions. [2020-08-18 16:11:15,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 16:11:15,434 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:15,435 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 16:11:15,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:11:15,435 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:15,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:15,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1007263159, now seen corresponding path program 1 times [2020-08-18 16:11:15,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:15,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913981258] [2020-08-18 16:11:15,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,792 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:15,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 16:11:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 16:11:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:11:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:15,857 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 16:11:15,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913981258] [2020-08-18 16:11:15,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:15,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:11:15,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246440937] [2020-08-18 16:11:15,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:11:15,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:15,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:11:15,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:11:15,862 INFO L87 Difference]: Start difference. First operand 136 states and 159 transitions. Second operand 5 states. [2020-08-18 16:11:16,343 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:17,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:17,168 INFO L93 Difference]: Finished difference Result 244 states and 295 transitions. [2020-08-18 16:11:17,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:11:17,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 16:11:17,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:17,172 INFO L225 Difference]: With dead ends: 244 [2020-08-18 16:11:17,172 INFO L226 Difference]: Without dead ends: 154 [2020-08-18 16:11:17,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:11:17,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-18 16:11:17,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 127. [2020-08-18 16:11:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-18 16:11:17,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 147 transitions. [2020-08-18 16:11:17,209 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 147 transitions. Word has length 60 [2020-08-18 16:11:17,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:17,209 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 147 transitions. [2020-08-18 16:11:17,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:11:17,210 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 147 transitions. [2020-08-18 16:11:17,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 16:11:17,211 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:17,211 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] [2020-08-18 16:11:17,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:11:17,212 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:17,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:17,212 INFO L82 PathProgramCache]: Analyzing trace with hash -706056489, now seen corresponding path program 1 times [2020-08-18 16:11:17,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:17,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472713140] [2020-08-18 16:11:17,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:17,544 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:17,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:17,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:17,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:17,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:17,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:17,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:17,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:11:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:17,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:17,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 16:11:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:17,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 16:11:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:17,719 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 16:11:17,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472713140] [2020-08-18 16:11:17,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:17,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:11:17,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120230925] [2020-08-18 16:11:17,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:11:17,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:17,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:11:17,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:11:17,730 INFO L87 Difference]: Start difference. First operand 127 states and 147 transitions. Second operand 9 states. [2020-08-18 16:11:18,083 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:18,393 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:18,659 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:18,889 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:19,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:19,958 INFO L93 Difference]: Finished difference Result 253 states and 310 transitions. [2020-08-18 16:11:19,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:11:19,964 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 16:11:19,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:19,967 INFO L225 Difference]: With dead ends: 253 [2020-08-18 16:11:19,967 INFO L226 Difference]: Without dead ends: 154 [2020-08-18 16:11:19,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:11:19,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-18 16:11:20,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 127. [2020-08-18 16:11:20,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-08-18 16:11:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2020-08-18 16:11:20,014 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 64 [2020-08-18 16:11:20,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:20,015 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2020-08-18 16:11:20,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:11:20,015 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2020-08-18 16:11:20,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 16:11:20,016 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:20,017 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] [2020-08-18 16:11:20,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:11:20,017 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:20,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:20,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1588822882, now seen corresponding path program 1 times [2020-08-18 16:11:20,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:20,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425449687] [2020-08-18 16:11:20,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,284 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:20,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:11:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:11:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 16:11:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 16:11:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:20,409 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 16:11:20,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425449687] [2020-08-18 16:11:20,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:20,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:11:20,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769869553] [2020-08-18 16:11:20,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:11:20,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:20,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:11:20,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:11:20,412 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand 7 states. [2020-08-18 16:11:20,776 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:22,159 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:22,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:22,654 INFO L93 Difference]: Finished difference Result 352 states and 438 transitions. [2020-08-18 16:11:22,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:11:22,654 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-18 16:11:22,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:22,657 INFO L225 Difference]: With dead ends: 352 [2020-08-18 16:11:22,657 INFO L226 Difference]: Without dead ends: 253 [2020-08-18 16:11:22,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:11:22,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-08-18 16:11:22,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 210. [2020-08-18 16:11:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-08-18 16:11:22,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 241 transitions. [2020-08-18 16:11:22,705 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 241 transitions. Word has length 77 [2020-08-18 16:11:22,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:22,706 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 241 transitions. [2020-08-18 16:11:22,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:11:22,706 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 241 transitions. [2020-08-18 16:11:22,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-18 16:11:22,707 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:22,707 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] [2020-08-18 16:11:22,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:11:22,708 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:22,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:22,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1801013738, now seen corresponding path program 1 times [2020-08-18 16:11:22,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:22,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6029121] [2020-08-18 16:11:22,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:22,993 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:22,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:11:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:11:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 16:11:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 16:11:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:23,109 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 16:11:23,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6029121] [2020-08-18 16:11:23,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:23,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:11:23,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277141040] [2020-08-18 16:11:23,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:11:23,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:23,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:11:23,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:11:23,112 INFO L87 Difference]: Start difference. First operand 210 states and 241 transitions. Second operand 9 states. [2020-08-18 16:11:23,556 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:24,156 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:24,837 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:25,185 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:25,613 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:25,865 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:26,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:26,436 INFO L93 Difference]: Finished difference Result 434 states and 528 transitions. [2020-08-18 16:11:26,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 16:11:26,436 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-08-18 16:11:26,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:26,439 INFO L225 Difference]: With dead ends: 434 [2020-08-18 16:11:26,439 INFO L226 Difference]: Without dead ends: 252 [2020-08-18 16:11:26,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:11:26,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-08-18 16:11:26,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 209. [2020-08-18 16:11:26,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-18 16:11:26,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 238 transitions. [2020-08-18 16:11:26,482 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 238 transitions. Word has length 91 [2020-08-18 16:11:26,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:26,483 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 238 transitions. [2020-08-18 16:11:26,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:11:26,483 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 238 transitions. [2020-08-18 16:11:26,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 16:11:26,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:26,485 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] [2020-08-18 16:11:26,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:11:26,485 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:26,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:26,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1999801536, now seen corresponding path program 1 times [2020-08-18 16:11:26,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:26,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179094686] [2020-08-18 16:11:26,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,758 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:26,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:11:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:11:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 16:11:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 16:11:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:26,858 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 16:11:26,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179094686] [2020-08-18 16:11:26,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:26,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:11:26,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256039770] [2020-08-18 16:11:26,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:11:26,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:26,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:11:26,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:11:26,861 INFO L87 Difference]: Start difference. First operand 209 states and 238 transitions. Second operand 9 states. [2020-08-18 16:11:27,784 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:28,038 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:11:28,293 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:28,540 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:29,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:29,200 INFO L93 Difference]: Finished difference Result 432 states and 522 transitions. [2020-08-18 16:11:29,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 16:11:29,200 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-18 16:11:29,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:29,206 INFO L225 Difference]: With dead ends: 432 [2020-08-18 16:11:29,206 INFO L226 Difference]: Without dead ends: 251 [2020-08-18 16:11:29,208 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 16:11:29,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-08-18 16:11:29,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 214. [2020-08-18 16:11:29,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-08-18 16:11:29,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 243 transitions. [2020-08-18 16:11:29,248 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 243 transitions. Word has length 92 [2020-08-18 16:11:29,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:29,249 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 243 transitions. [2020-08-18 16:11:29,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:11:29,249 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 243 transitions. [2020-08-18 16:11:29,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 16:11:29,250 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:29,250 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] [2020-08-18 16:11:29,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:11:29,251 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:29,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:29,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1298201662, now seen corresponding path program 1 times [2020-08-18 16:11:29,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:29,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442491633] [2020-08-18 16:11:29,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:29,534 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:29,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:29,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:29,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:29,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:29,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:29,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:29,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:11:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:29,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:29,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:11:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:29,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:29,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:29,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:29,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:29,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 16:11:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:29,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 16:11:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:29,664 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 16:11:29,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442491633] [2020-08-18 16:11:29,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:29,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 16:11:29,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239868362] [2020-08-18 16:11:29,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 16:11:29,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:29,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 16:11:29,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 16:11:29,666 INFO L87 Difference]: Start difference. First operand 214 states and 243 transitions. Second operand 11 states. [2020-08-18 16:11:30,228 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:30,459 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:30,677 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:31,354 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:31,605 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:31,843 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:32,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:32,643 INFO L93 Difference]: Finished difference Result 444 states and 542 transitions. [2020-08-18 16:11:32,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 16:11:32,644 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-18 16:11:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:32,646 INFO L225 Difference]: With dead ends: 444 [2020-08-18 16:11:32,646 INFO L226 Difference]: Without dead ends: 258 [2020-08-18 16:11:32,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:11:32,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-18 16:11:32,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-08-18 16:11:32,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-18 16:11:32,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 247 transitions. [2020-08-18 16:11:32,685 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 247 transitions. Word has length 92 [2020-08-18 16:11:32,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:32,685 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 247 transitions. [2020-08-18 16:11:32,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 16:11:32,686 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 247 transitions. [2020-08-18 16:11:32,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 16:11:32,687 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:32,687 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] [2020-08-18 16:11:32,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:11:32,687 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:32,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:32,688 INFO L82 PathProgramCache]: Analyzing trace with hash 427279235, now seen corresponding path program 1 times [2020-08-18 16:11:32,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:32,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297707786] [2020-08-18 16:11:32,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:32,961 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:32,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:32,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:32,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:32,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:32,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:33,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:33,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:11:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:33,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:33,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:11:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:33,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:33,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:33,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:33,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:33,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 16:11:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:33,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 16:11:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:33,111 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 16:11:33,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297707786] [2020-08-18 16:11:33,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:33,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:11:33,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105301673] [2020-08-18 16:11:33,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:11:33,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:33,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:11:33,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:11:33,114 INFO L87 Difference]: Start difference. First operand 218 states and 247 transitions. Second operand 7 states. [2020-08-18 16:11:33,587 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:34,111 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:35,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:35,708 INFO L93 Difference]: Finished difference Result 613 states and 766 transitions. [2020-08-18 16:11:35,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:11:35,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-08-18 16:11:35,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:35,712 INFO L225 Difference]: With dead ends: 613 [2020-08-18 16:11:35,712 INFO L226 Difference]: Without dead ends: 423 [2020-08-18 16:11:35,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:11:35,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-08-18 16:11:35,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 385. [2020-08-18 16:11:35,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-18 16:11:35,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 451 transitions. [2020-08-18 16:11:35,782 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 451 transitions. Word has length 92 [2020-08-18 16:11:35,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:35,782 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 451 transitions. [2020-08-18 16:11:35,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:11:35,782 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 451 transitions. [2020-08-18 16:11:35,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-18 16:11:35,784 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:35,784 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:11:35,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:11:35,784 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:35,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:35,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1298280163, now seen corresponding path program 1 times [2020-08-18 16:11:35,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:35,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [865791506] [2020-08-18 16:11:35,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:36,137 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:36,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:36,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:36,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:36,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:36,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:36,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:36,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:11:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:36,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:11:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:36,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:36,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 16:11:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:36,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:36,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:36,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:36,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:36,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 16:11:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:36,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 16:11:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:36,344 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 16:11:36,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [865791506] [2020-08-18 16:11:36,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:11:36,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:11:36,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825917460] [2020-08-18 16:11:36,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:11:36,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:36,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:11:36,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:11:36,346 INFO L87 Difference]: Start difference. First operand 385 states and 451 transitions. Second operand 12 states. [2020-08-18 16:11:36,954 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:37,595 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:38,535 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:38,822 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:39,055 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:11:39,324 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:39,572 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:40,684 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:40,948 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:41,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:41,575 INFO L93 Difference]: Finished difference Result 1059 states and 1322 transitions. [2020-08-18 16:11:41,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 16:11:41,583 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-18 16:11:41,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:41,588 INFO L225 Difference]: With dead ends: 1059 [2020-08-18 16:11:41,588 INFO L226 Difference]: Without dead ends: 772 [2020-08-18 16:11:41,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 16:11:41,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2020-08-18 16:11:41,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 662. [2020-08-18 16:11:41,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 662 states. [2020-08-18 16:11:41,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 768 transitions. [2020-08-18 16:11:41,716 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 768 transitions. Word has length 96 [2020-08-18 16:11:41,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:41,716 INFO L479 AbstractCegarLoop]: Abstraction has 662 states and 768 transitions. [2020-08-18 16:11:41,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:11:41,717 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 768 transitions. [2020-08-18 16:11:41,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-18 16:11:41,719 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:41,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:11:41,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:11:41,720 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:41,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:41,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1033047505, now seen corresponding path program 1 times [2020-08-18 16:11:41,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:41,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486232696] [2020-08-18 16:11:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,034 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:42,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:11:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:11:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:11:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:11:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 16:11:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 16:11:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 16:11:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:11:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-18 16:11:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-18 16:11:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:42,347 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 16:11:42,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486232696] [2020-08-18 16:11:42,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:11:42,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 16:11:42,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672211153] [2020-08-18 16:11:42,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 16:11:42,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:42,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 16:11:42,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:11:42,351 INFO L87 Difference]: Start difference. First operand 662 states and 768 transitions. Second operand 16 states. [2020-08-18 16:11:43,043 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:11:43,404 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 16:11:43,686 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:11:43,966 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:11:44,575 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:44,874 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:11:45,228 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 16:11:45,856 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:46,205 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 16:11:47,034 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:47,520 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-18 16:11:47,812 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:11:48,364 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:48,827 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:11:49,209 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 16:11:49,850 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 16:11:50,328 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-18 16:11:50,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:50,955 INFO L93 Difference]: Finished difference Result 1437 states and 1723 transitions. [2020-08-18 16:11:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-18 16:11:50,955 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 155 [2020-08-18 16:11:50,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:50,961 INFO L225 Difference]: With dead ends: 1437 [2020-08-18 16:11:50,961 INFO L226 Difference]: Without dead ends: 869 [2020-08-18 16:11:50,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=600, Invalid=2370, Unknown=0, NotChecked=0, Total=2970 [2020-08-18 16:11:50,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2020-08-18 16:11:51,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 790. [2020-08-18 16:11:51,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 790 states. [2020-08-18 16:11:51,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 926 transitions. [2020-08-18 16:11:51,116 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 926 transitions. Word has length 155 [2020-08-18 16:11:51,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:51,118 INFO L479 AbstractCegarLoop]: Abstraction has 790 states and 926 transitions. [2020-08-18 16:11:51,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 16:11:51,118 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 926 transitions. [2020-08-18 16:11:51,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-08-18 16:11:51,125 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:51,126 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:11:51,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:11:51,126 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:51,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:51,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1843458969, now seen corresponding path program 1 times [2020-08-18 16:11:51,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:51,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599786108] [2020-08-18 16:11:51,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,417 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:51,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:11:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:11:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:11:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:11:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 16:11:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:11:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:11:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:11:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-08-18 16:11:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:11:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:11:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:11:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-08-18 16:11:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-18 16:11:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-08-18 16:11:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 16:11:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:51,879 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-08-18 16:11:51,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599786108] [2020-08-18 16:11:51,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:11:51,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 16:11:51,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338752579] [2020-08-18 16:11:51,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 16:11:51,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:51,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 16:11:51,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 16:11:51,881 INFO L87 Difference]: Start difference. First operand 790 states and 926 transitions. Second operand 15 states. [2020-08-18 16:11:53,229 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:11:53,481 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:11:53,713 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:11:53,941 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:55,245 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:11:56,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:11:56,068 INFO L93 Difference]: Finished difference Result 2070 states and 2533 transitions. [2020-08-18 16:11:56,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-18 16:11:56,069 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 269 [2020-08-18 16:11:56,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:11:56,081 INFO L225 Difference]: With dead ends: 2070 [2020-08-18 16:11:56,081 INFO L226 Difference]: Without dead ends: 1221 [2020-08-18 16:11:56,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 95 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-18 16:11:56,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2020-08-18 16:11:56,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1035. [2020-08-18 16:11:56,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2020-08-18 16:11:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1245 transitions. [2020-08-18 16:11:56,290 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1245 transitions. Word has length 269 [2020-08-18 16:11:56,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:11:56,291 INFO L479 AbstractCegarLoop]: Abstraction has 1035 states and 1245 transitions. [2020-08-18 16:11:56,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 16:11:56,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1245 transitions. [2020-08-18 16:11:56,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-08-18 16:11:56,297 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:11:56,297 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:11:56,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:11:56,297 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:11:56,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:11:56,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1744332382, now seen corresponding path program 1 times [2020-08-18 16:11:56,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:11:56,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004366756] [2020-08-18 16:11:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:11:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,657 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:11:56,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:11:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:11:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:11:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:11:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:11:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:11:56,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:11:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:56,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:11:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 16:11:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:11:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:11:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:11:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:11:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-18 16:11:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:11:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:11:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:11:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:11:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-18 16:11:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:11:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-08-18 16:11:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:11:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:11:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:11:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-18 16:11:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:56,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-18 16:11:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:11:57,009 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 85 proven. 36 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-08-18 16:11:57,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004366756] [2020-08-18 16:11:57,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:11:57,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 16:11:57,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510942447] [2020-08-18 16:11:57,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 16:11:57,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:11:57,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 16:11:57,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:11:57,011 INFO L87 Difference]: Start difference. First operand 1035 states and 1245 transitions. Second operand 16 states. [2020-08-18 16:11:57,529 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:11:57,871 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 16:11:58,146 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:11:58,400 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:11:59,059 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:11:59,871 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:00,211 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:00,485 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:01,163 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:01,998 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:02,255 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:02,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:12:02,851 INFO L93 Difference]: Finished difference Result 1960 states and 2393 transitions. [2020-08-18 16:12:02,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 16:12:02,851 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 275 [2020-08-18 16:12:02,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:12:02,859 INFO L225 Difference]: With dead ends: 1960 [2020-08-18 16:12:02,859 INFO L226 Difference]: Without dead ends: 1038 [2020-08-18 16:12:02,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 16:12:02,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-08-18 16:12:03,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 995. [2020-08-18 16:12:03,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-08-18 16:12:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1179 transitions. [2020-08-18 16:12:03,127 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1179 transitions. Word has length 275 [2020-08-18 16:12:03,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:12:03,130 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1179 transitions. [2020-08-18 16:12:03,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 16:12:03,130 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1179 transitions. [2020-08-18 16:12:03,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-08-18 16:12:03,141 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:12:03,142 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:12:03,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 16:12:03,142 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:12:03,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:12:03,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1275818878, now seen corresponding path program 1 times [2020-08-18 16:12:03,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:12:03,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890893100] [2020-08-18 16:12:03,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:12:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,485 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:12:03,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:12:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:12:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:12:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:12:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:12:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:12:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 16:12:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:12:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 16:12:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:12:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:12:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:12:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 16:12:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-18 16:12:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:12:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:12:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:12:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:12:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-08-18 16:12:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:12:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-08-18 16:12:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:12:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:12:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:12:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2020-08-18 16:12:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-18 16:12:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:12:03,956 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 68 proven. 11 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-08-18 16:12:03,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890893100] [2020-08-18 16:12:03,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:12:03,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 16:12:03,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240774848] [2020-08-18 16:12:03,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 16:12:03,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:12:03,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 16:12:03,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:12:03,958 INFO L87 Difference]: Start difference. First operand 995 states and 1179 transitions. Second operand 16 states. [2020-08-18 16:12:04,686 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:12:05,460 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:12:07,509 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:07,781 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:08,036 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:12:08,274 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:12:08,752 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-08-18 16:12:09,005 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:12:09,468 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-08-18 16:12:09,713 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192