/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:13:54,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:13:54,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:13:55,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:13:55,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:13:55,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:13:55,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:13:55,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:13:55,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:13:55,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:13:55,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:13:55,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:13:55,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:13:55,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:13:55,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:13:55,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:13:55,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:13:55,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:13:55,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:13:55,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:13:55,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:13:55,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:13:55,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:13:55,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:13:55,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:13:55,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:13:55,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:13:55,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:13:55,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:13:55,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:13:55,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:13:55,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:13:55,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:13:55,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:13:55,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:13:55,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:13:55,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:13:55,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:13:55,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:13:55,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:13:55,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:13:55,091 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 [2020-08-22 05:13:55,130 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:13:55,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:13:55,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:13:55,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:13:55,132 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:13:55,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:13:55,133 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:13:55,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:13:55,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:13:55,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:13:55,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:13:55,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:13:55,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:13:55,136 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:13:55,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:13:55,136 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:13:55,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:13:55,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:13:55,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:13:55,137 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:13:55,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:13:55,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:13:55,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:13:55,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:13:55,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:13:55,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:13:55,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:13:55,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:13:55,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:13:55,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:13:55,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:13:55,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:13:55,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:13:55,461 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:13:55,462 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:13:55,462 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c [2020-08-22 05:13:55,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/238c8ca2d/9fcc2614aa8f472c82f96b898cf091ef/FLAG77f2bddab [2020-08-22 05:13:56,054 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:13:56,055 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product41.cil.c [2020-08-22 05:13:56,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/238c8ca2d/9fcc2614aa8f472c82f96b898cf091ef/FLAG77f2bddab [2020-08-22 05:13:56,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/238c8ca2d/9fcc2614aa8f472c82f96b898cf091ef [2020-08-22 05:13:56,428 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:13:56,429 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:13:56,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:13:56,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:13:56,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:13:56,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:13:56" (1/1) ... [2020-08-22 05:13:56,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc2875a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:56, skipping insertion in model container [2020-08-22 05:13:56,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:13:56" (1/1) ... [2020-08-22 05:13:56,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:13:56,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:13:56,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:13:56,949 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:13:57,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:13:57,054 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:13:57,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:57 WrapperNode [2020-08-22 05:13:57,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:13:57,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:13:57,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:13:57,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:13:57,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:57" (1/1) ... [2020-08-22 05:13:57,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:57" (1/1) ... [2020-08-22 05:13:57,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:57" (1/1) ... [2020-08-22 05:13:57,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:57" (1/1) ... [2020-08-22 05:13:57,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:57" (1/1) ... [2020-08-22 05:13:57,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:57" (1/1) ... [2020-08-22 05:13:57,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:57" (1/1) ... [2020-08-22 05:13:57,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:13:57,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:13:57,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:13:57,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:13:57,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:57" (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 [2020-08-22 05:13:57,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:13:57,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:13:57,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:13:57,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:13:57,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:13:57,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:13:57,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:13:57,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:13:57,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:13:57,226 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:13:57,226 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:13:57,226 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:13:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:13:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:13:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:13:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:13:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 05:13:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:13:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 05:13:57,228 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:13:57,228 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 05:13:57,228 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:13:57,228 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:13:57,228 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:13:57,228 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:13:57,228 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:13:57,228 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 05:13:57,229 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:13:57,229 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:13:57,229 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:13:57,229 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:13:57,229 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:13:57,229 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:13:57,230 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:13:57,230 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:13:57,230 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:13:57,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:13:57,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 05:13:57,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:13:57,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:13:57,230 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:13:57,230 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:13:57,230 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:13:57,231 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:13:57,231 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:13:57,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:13:57,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:13:57,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:13:57,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:13:57,231 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:13:57,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:13:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:13:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:13:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:13:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:13:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:13:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:13:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:13:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:13:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:13:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:13:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:13:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:13:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:13:57,234 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:13:57,234 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:13:57,234 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:13:57,234 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 05:13:57,234 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:13:57,234 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:13:57,234 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:13:57,235 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:13:57,235 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 05:13:57,235 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:13:57,235 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 05:13:57,235 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 05:13:57,235 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 05:13:57,235 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:13:57,236 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:13:57,236 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:13:57,236 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:13:57,236 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:13:57,236 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:13:57,236 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:13:57,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:13:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:13:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:13:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:13:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:13:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:13:58,279 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:13:58,280 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:13:58,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:13:58 BoogieIcfgContainer [2020-08-22 05:13:58,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:13:58,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:13:58,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:13:58,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:13:58,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:13:56" (1/3) ... [2020-08-22 05:13:58,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fe1837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:13:58, skipping insertion in model container [2020-08-22 05:13:58,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:13:57" (2/3) ... [2020-08-22 05:13:58,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76fe1837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:13:58, skipping insertion in model container [2020-08-22 05:13:58,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:13:58" (3/3) ... [2020-08-22 05:13:58,293 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product41.cil.c [2020-08-22 05:13:58,303 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:13:58,311 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:13:58,326 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:13:58,350 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:13:58,350 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:13:58,351 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:13:58,351 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:13:58,351 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:13:58,351 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:13:58,351 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:13:58,352 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:13:58,373 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-22 05:13:58,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 05:13:58,386 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:13:58,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:13:58,387 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:13:58,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:13:58,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1904787813, now seen corresponding path program 1 times [2020-08-22 05:13:58,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:13:58,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368911675] [2020-08-22 05:13:58,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:13:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:59,087 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:13:59,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:13:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:59,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:13:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:59,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:13:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:59,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:13:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:59,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:13:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:59,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:13:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:59,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:13:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:13:59,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:13:59,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368911675] [2020-08-22 05:13:59,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:13:59,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:13:59,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519068893] [2020-08-22 05:13:59,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:13:59,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:13:59,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:13:59,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:13:59,259 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-08-22 05:14:00,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:00,287 INFO L93 Difference]: Finished difference Result 275 states and 361 transitions. [2020-08-22 05:14:00,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:14:00,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 05:14:00,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:00,306 INFO L225 Difference]: With dead ends: 275 [2020-08-22 05:14:00,306 INFO L226 Difference]: Without dead ends: 149 [2020-08-22 05:14:00,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:14:00,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-22 05:14:00,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 117. [2020-08-22 05:14:00,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-22 05:14:00,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions. [2020-08-22 05:14:00,398 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 46 [2020-08-22 05:14:00,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:00,398 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions. [2020-08-22 05:14:00,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:14:00,398 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions. [2020-08-22 05:14:00,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 05:14:00,402 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:00,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:00,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:14:00,403 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:00,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:00,403 INFO L82 PathProgramCache]: Analyzing trace with hash -8679295, now seen corresponding path program 1 times [2020-08-22 05:14:00,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:00,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458027600] [2020-08-22 05:14:00,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:00,792 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:00,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:00,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:00,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:00,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:00,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:14:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:00,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:14:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:00,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:14:00,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458027600] [2020-08-22 05:14:00,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:00,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:14:00,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452860214] [2020-08-22 05:14:00,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:14:00,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:00,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:14:00,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:14:00,841 INFO L87 Difference]: Start difference. First operand 117 states and 137 transitions. Second operand 4 states. [2020-08-22 05:14:01,340 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:02,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:02,077 INFO L93 Difference]: Finished difference Result 208 states and 252 transitions. [2020-08-22 05:14:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:14:02,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 05:14:02,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:02,082 INFO L225 Difference]: With dead ends: 208 [2020-08-22 05:14:02,082 INFO L226 Difference]: Without dead ends: 133 [2020-08-22 05:14:02,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:14:02,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-08-22 05:14:02,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 108. [2020-08-22 05:14:02,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-22 05:14:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2020-08-22 05:14:02,127 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 47 [2020-08-22 05:14:02,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:02,128 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2020-08-22 05:14:02,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:14:02,128 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2020-08-22 05:14:02,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 05:14:02,130 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:02,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:02,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:14:02,131 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:02,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:02,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1364944070, now seen corresponding path program 1 times [2020-08-22 05:14:02,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:02,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779811151] [2020-08-22 05:14:02,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:02,491 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:02,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:02,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:02,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:02,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:02,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:02,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:14:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:02,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:14:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:14:02,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779811151] [2020-08-22 05:14:02,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:02,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:14:02,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999622182] [2020-08-22 05:14:02,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:14:02,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:02,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:14:02,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:14:02,573 INFO L87 Difference]: Start difference. First operand 108 states and 125 transitions. Second operand 8 states. [2020-08-22 05:14:02,919 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:03,264 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:03,580 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:03,857 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:04,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:04,965 INFO L93 Difference]: Finished difference Result 217 states and 266 transitions. [2020-08-22 05:14:04,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:14:04,966 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 05:14:04,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:04,969 INFO L225 Difference]: With dead ends: 217 [2020-08-22 05:14:04,969 INFO L226 Difference]: Without dead ends: 133 [2020-08-22 05:14:04,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:14:04,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-08-22 05:14:05,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 108. [2020-08-22 05:14:05,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-08-22 05:14:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2020-08-22 05:14:05,003 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 51 [2020-08-22 05:14:05,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:05,004 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2020-08-22 05:14:05,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:14:05,004 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2020-08-22 05:14:05,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 05:14:05,006 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:05,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:05,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:14:05,007 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:05,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:05,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1317252167, now seen corresponding path program 1 times [2020-08-22 05:14:05,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:05,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362758518] [2020-08-22 05:14:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:05,334 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:05,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:05,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:05,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:05,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:05,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:05,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 05:14:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:05,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:14:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:05,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 05:14:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:05,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 05:14:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:05,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:14:05,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362758518] [2020-08-22 05:14:05,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:05,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:14:05,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056089981] [2020-08-22 05:14:05,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:14:05,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:05,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:14:05,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:14:05,426 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand 6 states. [2020-08-22 05:14:05,788 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:06,982 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:07,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:07,573 INFO L93 Difference]: Finished difference Result 300 states and 370 transitions. [2020-08-22 05:14:07,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 05:14:07,574 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-22 05:14:07,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:07,578 INFO L225 Difference]: With dead ends: 300 [2020-08-22 05:14:07,578 INFO L226 Difference]: Without dead ends: 216 [2020-08-22 05:14:07,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:14:07,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-08-22 05:14:07,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 175. [2020-08-22 05:14:07,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-08-22 05:14:07,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2020-08-22 05:14:07,621 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 59 [2020-08-22 05:14:07,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:07,622 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2020-08-22 05:14:07,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:14:07,622 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2020-08-22 05:14:07,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-22 05:14:07,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:07,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:07,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:14:07,625 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:07,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:07,625 INFO L82 PathProgramCache]: Analyzing trace with hash 19293366, now seen corresponding path program 1 times [2020-08-22 05:14:07,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:07,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938282308] [2020-08-22 05:14:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:07,965 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:07,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 05:14:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:14:08,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:14:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 05:14:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 05:14:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:08,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:14:08,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938282308] [2020-08-22 05:14:08,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:08,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:14:08,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217367656] [2020-08-22 05:14:08,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:14:08,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:08,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:14:08,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:14:08,073 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand 8 states. [2020-08-22 05:14:08,456 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:09,482 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:09,844 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:10,420 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:10,697 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:11,010 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:11,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:11,716 INFO L93 Difference]: Finished difference Result 520 states and 648 transitions. [2020-08-22 05:14:11,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 05:14:11,717 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-08-22 05:14:11,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:11,722 INFO L225 Difference]: With dead ends: 520 [2020-08-22 05:14:11,722 INFO L226 Difference]: Without dead ends: 369 [2020-08-22 05:14:11,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 05:14:11,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-08-22 05:14:11,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 305. [2020-08-22 05:14:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-22 05:14:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 352 transitions. [2020-08-22 05:14:11,819 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 352 transitions. Word has length 73 [2020-08-22 05:14:11,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:11,820 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 352 transitions. [2020-08-22 05:14:11,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:14:11,820 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 352 transitions. [2020-08-22 05:14:11,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-22 05:14:11,822 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:11,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:11,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:14:11,823 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:11,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:11,823 INFO L82 PathProgramCache]: Analyzing trace with hash -989642822, now seen corresponding path program 1 times [2020-08-22 05:14:11,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:11,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348611179] [2020-08-22 05:14:11,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:12,106 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:12,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:12,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:12,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:12,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:12,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:12,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:14:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:12,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:14:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:12,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:14:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:12,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:12,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:14:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:12,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-22 05:14:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:12,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-22 05:14:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:14:12,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348611179] [2020-08-22 05:14:12,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:12,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:14:12,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660403246] [2020-08-22 05:14:12,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:14:12,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:12,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:14:12,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:14:12,236 INFO L87 Difference]: Start difference. First operand 305 states and 352 transitions. Second operand 9 states. [2020-08-22 05:14:12,618 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:13,703 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:13,977 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:14,730 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:15,006 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:15,308 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:15,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:15,460 INFO L93 Difference]: Finished difference Result 408 states and 516 transitions. [2020-08-22 05:14:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 05:14:15,460 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-22 05:14:15,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:15,467 INFO L225 Difference]: With dead ends: 408 [2020-08-22 05:14:15,468 INFO L226 Difference]: Without dead ends: 405 [2020-08-22 05:14:15,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 05:14:15,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-08-22 05:14:15,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 305. [2020-08-22 05:14:15,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-08-22 05:14:15,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 351 transitions. [2020-08-22 05:14:15,537 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 351 transitions. Word has length 77 [2020-08-22 05:14:15,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:15,538 INFO L479 AbstractCegarLoop]: Abstraction has 305 states and 351 transitions. [2020-08-22 05:14:15,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:14:15,538 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 351 transitions. [2020-08-22 05:14:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 05:14:15,540 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:15,540 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:15,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:14:15,541 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:15,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:15,541 INFO L82 PathProgramCache]: Analyzing trace with hash 636453553, now seen corresponding path program 1 times [2020-08-22 05:14:15,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:15,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808099334] [2020-08-22 05:14:15,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,823 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:15,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:14:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:14:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:14:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:14:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 05:14:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 05:14:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:15,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 05:14:15,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808099334] [2020-08-22 05:14:15,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:15,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 05:14:15,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773227123] [2020-08-22 05:14:15,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:14:15,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:15,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:14:15,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:14:15,998 INFO L87 Difference]: Start difference. First operand 305 states and 351 transitions. Second operand 9 states. [2020-08-22 05:14:16,911 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:14:17,237 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:14:17,501 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:17,774 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:18,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:18,638 INFO L93 Difference]: Finished difference Result 694 states and 873 transitions. [2020-08-22 05:14:18,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:14:18,638 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-22 05:14:18,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:18,641 INFO L225 Difference]: With dead ends: 694 [2020-08-22 05:14:18,642 INFO L226 Difference]: Without dead ends: 413 [2020-08-22 05:14:18,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 05:14:18,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-08-22 05:14:18,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 315. [2020-08-22 05:14:18,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-08-22 05:14:18,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 361 transitions. [2020-08-22 05:14:18,704 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 361 transitions. Word has length 93 [2020-08-22 05:14:18,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:18,704 INFO L479 AbstractCegarLoop]: Abstraction has 315 states and 361 transitions. [2020-08-22 05:14:18,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:14:18,705 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 361 transitions. [2020-08-22 05:14:18,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 05:14:18,706 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:18,707 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, 1, 1] [2020-08-22 05:14:18,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:14:18,707 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:18,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:18,708 INFO L82 PathProgramCache]: Analyzing trace with hash -260939725, now seen corresponding path program 1 times [2020-08-22 05:14:18,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:18,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864395139] [2020-08-22 05:14:18,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,014 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:19,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:14:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:14:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:14:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:14:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 05:14:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 05:14:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:19,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 05:14:19,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864395139] [2020-08-22 05:14:19,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:19,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 05:14:19,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079955019] [2020-08-22 05:14:19,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 05:14:19,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:19,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 05:14:19,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:14:19,150 INFO L87 Difference]: Start difference. First operand 315 states and 361 transitions. Second operand 11 states. [2020-08-22 05:14:19,926 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:20,209 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:20,473 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:21,096 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:21,396 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:21,654 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:14:22,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:22,651 INFO L93 Difference]: Finished difference Result 714 states and 895 transitions. [2020-08-22 05:14:22,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 05:14:22,651 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-22 05:14:22,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:22,655 INFO L225 Difference]: With dead ends: 714 [2020-08-22 05:14:22,655 INFO L226 Difference]: Without dead ends: 423 [2020-08-22 05:14:22,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 05:14:22,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-08-22 05:14:22,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 323. [2020-08-22 05:14:22,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-08-22 05:14:22,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 369 transitions. [2020-08-22 05:14:22,727 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 369 transitions. Word has length 93 [2020-08-22 05:14:22,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:22,728 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 369 transitions. [2020-08-22 05:14:22,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 05:14:22,728 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 369 transitions. [2020-08-22 05:14:22,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-22 05:14:22,730 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:22,730 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:22,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:14:22,730 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:22,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:22,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1709999732, now seen corresponding path program 1 times [2020-08-22 05:14:22,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:22,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906745264] [2020-08-22 05:14:22,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,011 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:23,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:14:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:14:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:14:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:23,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:14:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-22 05:14:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 05:14:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:23,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 05:14:23,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906745264] [2020-08-22 05:14:23,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:14:23,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 05:14:23,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062226841] [2020-08-22 05:14:23,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 05:14:23,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:23,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 05:14:23,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:14:23,172 INFO L87 Difference]: Start difference. First operand 323 states and 369 transitions. Second operand 7 states. [2020-08-22 05:14:23,544 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:24,078 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:25,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:25,787 INFO L93 Difference]: Finished difference Result 997 states and 1285 transitions. [2020-08-22 05:14:25,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 05:14:25,787 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-08-22 05:14:25,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:25,793 INFO L225 Difference]: With dead ends: 997 [2020-08-22 05:14:25,793 INFO L226 Difference]: Without dead ends: 698 [2020-08-22 05:14:25,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 05:14:25,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-08-22 05:14:25,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 599. [2020-08-22 05:14:25,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-08-22 05:14:25,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 711 transitions. [2020-08-22 05:14:25,922 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 711 transitions. Word has length 93 [2020-08-22 05:14:25,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:25,923 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 711 transitions. [2020-08-22 05:14:25,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 05:14:25,923 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 711 transitions. [2020-08-22 05:14:25,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-22 05:14:25,929 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:25,930 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:25,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:14:25,930 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:25,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:25,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1136093798, now seen corresponding path program 1 times [2020-08-22 05:14:25,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:25,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186780708] [2020-08-22 05:14:25,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:26,260 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:14:26,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:14:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:26,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:14:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:26,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:14:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:26,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:26,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:14:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:26,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:14:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:26,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 05:14:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:26,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:14:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:26,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:14:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:26,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:26,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:14:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:26,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:26,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:14:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:26,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:14:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:26,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 05:14:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:26,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 05:14:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:14:26,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 05:14:26,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186780708] [2020-08-22 05:14:26,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:14:26,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-22 05:14:26,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354920453] [2020-08-22 05:14:26,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-22 05:14:26,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:14:26,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-22 05:14:26,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-22 05:14:26,639 INFO L87 Difference]: Start difference. First operand 599 states and 711 transitions. Second operand 17 states. [2020-08-22 05:14:27,813 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:28,288 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:14:28,603 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:14:28,892 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:14:29,558 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:14:30,513 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:14:30,854 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:14:31,167 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:14:31,455 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:14:31,868 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:14:32,187 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:14:32,841 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-22 05:14:33,477 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-22 05:14:34,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:14:34,917 INFO L93 Difference]: Finished difference Result 1238 states and 1532 transitions. [2020-08-22 05:14:34,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 05:14:34,918 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 97 [2020-08-22 05:14:34,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:14:34,922 INFO L225 Difference]: With dead ends: 1238 [2020-08-22 05:14:34,923 INFO L226 Difference]: Without dead ends: 663 [2020-08-22 05:14:34,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=279, Invalid=1127, Unknown=0, NotChecked=0, Total=1406 [2020-08-22 05:14:34,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2020-08-22 05:14:35,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 567. [2020-08-22 05:14:35,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2020-08-22 05:14:35,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 660 transitions. [2020-08-22 05:14:35,029 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 660 transitions. Word has length 97 [2020-08-22 05:14:35,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:14:35,029 INFO L479 AbstractCegarLoop]: Abstraction has 567 states and 660 transitions. [2020-08-22 05:14:35,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-22 05:14:35,029 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 660 transitions. [2020-08-22 05:14:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-22 05:14:35,032 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:14:35,032 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:14:35,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 05:14:35,033 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:14:35,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:14:35,033 INFO L82 PathProgramCache]: Analyzing trace with hash 773081915, now seen corresponding path program 1 times [2020-08-22 05:14:35,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:14:35,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122506133] [2020-08-22 05:14:35,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:14:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:14:35,091 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:14:35,092 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:14:35,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 05:14:35,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:14:35 BoogieIcfgContainer [2020-08-22 05:14:35,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:14:35,128 INFO L168 Benchmark]: Toolchain (without parser) took 38699.14 ms. Allocated memory was 148.4 MB in the beginning and 637.0 MB in the end (delta: 488.6 MB). Free memory was 102.0 MB in the beginning and 234.0 MB in the end (delta: -132.0 MB). Peak memory consumption was 356.6 MB. Max. memory is 7.1 GB. [2020-08-22 05:14:35,129 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 05:14:35,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.79 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 101.8 MB in the beginning and 170.9 MB in the end (delta: -69.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-08-22 05:14:35,130 INFO L168 Benchmark]: Boogie Preprocessor took 106.20 ms. Allocated memory is still 204.5 MB. Free memory was 170.9 MB in the beginning and 166.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-22 05:14:35,131 INFO L168 Benchmark]: RCFGBuilder took 1123.09 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 166.5 MB in the beginning and 192.1 MB in the end (delta: -25.6 MB). Peak memory consumption was 79.5 MB. Max. memory is 7.1 GB. [2020-08-22 05:14:35,132 INFO L168 Benchmark]: TraceAbstraction took 36840.61 ms. Allocated memory was 234.9 MB in the beginning and 637.0 MB in the end (delta: 402.1 MB). Free memory was 192.1 MB in the beginning and 234.0 MB in the end (delta: -41.9 MB). Peak memory consumption was 360.3 MB. Max. memory is 7.1 GB. [2020-08-22 05:14:35,135 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 624.79 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 101.8 MB in the beginning and 170.9 MB in the end (delta: -69.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.20 ms. Allocated memory is still 204.5 MB. Free memory was 170.9 MB in the beginning and 166.5 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1123.09 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 166.5 MB in the beginning and 192.1 MB in the end (delta: -25.6 MB). Peak memory consumption was 79.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36840.61 ms. Allocated memory was 234.9 MB in the beginning and 637.0 MB in the end (delta: 402.1 MB). Free memory was 192.1 MB in the beginning and 234.0 MB in the end (delta: -41.9 MB). Peak memory consumption was 360.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 887]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L480] int waterLevel = 1; [L481] int methaneLevelCritical = 0; [L578] int pumpRunning = 0; [L579] int systemActive = 1; [L749] int cleanupTimeShifts = 4; [L825] int retValue_acc ; [L826] int tmp ; [L830] FCALL select_helpers() [L831] FCALL select_features() [L832] CALL, EXPR valid_product() [L874] int retValue_acc ; [L877] retValue_acc = 1 [L878] return (retValue_acc); [L832] RET, EXPR valid_product() [L832] tmp = valid_product() [L834] COND TRUE \read(tmp) [L836] FCALL setup() [L837] CALL runTest() [L816] CALL test() [L411] int splverifierCounter ; [L412] int tmp ; [L413] int tmp___0 ; [L414] int tmp___1 ; [L415] int tmp___2 ; [L418] splverifierCounter = 0 [L420] COND TRUE 1 [L422] COND TRUE splverifierCounter < 4 [L428] tmp = __VERIFIER_nondet_int() [L430] COND TRUE \read(tmp) [L432] CALL waterRise() [L498] COND TRUE waterLevel < 2 [L499] waterLevel = waterLevel + 1 [L432] RET waterRise() [L438] tmp___0 = __VERIFIER_nondet_int() [L440] COND FALSE !(\read(tmp___0)) [L448] tmp___2 = __VERIFIER_nondet_int() [L450] COND TRUE \read(tmp___2) [L463] CALL timeShift() [L586] COND FALSE !(\read(pumpRunning)) [L593] COND TRUE \read(systemActive) [L595] CALL processEnvironment() [L615] int tmp ; [L618] COND TRUE ! pumpRunning [L620] CALL, EXPR isHighWaterLevel() [L730] int retValue_acc ; [L731] int tmp ; [L732] int tmp___0 ; [L736] CALL, EXPR isHighWaterSensorDry() [L560] int retValue_acc ; [L563] COND FALSE !(waterLevel < 2) [L567] retValue_acc = 0 [L568] return (retValue_acc); [L736] RET, EXPR isHighWaterSensorDry() [L736] tmp = isHighWaterSensorDry() [L738] COND FALSE !(\read(tmp)) [L741] tmp___0 = 1 [L743] retValue_acc = tmp___0 [L744] return (retValue_acc); [L620] RET, EXPR isHighWaterLevel() [L620] tmp = isHighWaterLevel() [L622] COND TRUE \read(tmp) [L624] CALL activatePump() [L649] int tmp ; [L653] CALL, EXPR isMethaneAlarm() [L674] int retValue_acc ; [L678] CALL, EXPR isMethaneLevelCritical() [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); [L678] RET, EXPR isMethaneLevelCritical() [L678] retValue_acc = isMethaneLevelCritical() [L680] return (retValue_acc); [L653] RET, EXPR isMethaneAlarm() [L653] tmp = isMethaneAlarm() [L655] COND FALSE !(\read(tmp)) [L659] CALL activatePump__wrappee__highWaterSensor() [L643] pumpRunning = 1 [L659] RET activatePump__wrappee__highWaterSensor() [L624] RET activatePump() [L595] RET processEnvironment() [L601] CALL __utac_acc__Specification1_spec__1() [L893] int tmp ; [L894] int tmp___0 ; [L898] CALL, EXPR isMethaneLevelCritical() [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); [L898] RET, EXPR isMethaneLevelCritical() [L898] tmp = isMethaneLevelCritical() [L900] COND FALSE !(\read(tmp)) [L601] RET __utac_acc__Specification1_spec__1() [L463] RET timeShift() [L420] COND TRUE 1 [L422] COND TRUE splverifierCounter < 4 [L428] tmp = __VERIFIER_nondet_int() [L430] COND FALSE !(\read(tmp)) [L438] tmp___0 = __VERIFIER_nondet_int() [L440] COND TRUE \read(tmp___0) [L442] CALL changeMethaneLevel() [L510] COND FALSE !(\read(methaneLevelCritical)) [L513] methaneLevelCritical = 1 [L442] RET changeMethaneLevel() [L448] tmp___2 = __VERIFIER_nondet_int() [L450] COND TRUE \read(tmp___2) [L463] CALL timeShift() [L586] COND TRUE \read(pumpRunning) [L588] CALL lowerWaterLevel() [L486] COND TRUE waterLevel > 0 [L487] waterLevel = waterLevel - 1 [L588] RET lowerWaterLevel() [L593] COND TRUE \read(systemActive) [L595] CALL processEnvironment() [L615] int tmp ; [L618] COND FALSE !(! pumpRunning) [L633] FCALL processEnvironment__wrappee__base() [L595] RET processEnvironment() [L601] CALL __utac_acc__Specification1_spec__1() [L893] int tmp ; [L894] int tmp___0 ; [L898] CALL, EXPR isMethaneLevelCritical() [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); [L898] RET, EXPR isMethaneLevelCritical() [L898] tmp = isMethaneLevelCritical() [L900] COND TRUE \read(tmp) [L902] CALL, EXPR isPumpRunning() [L685] int retValue_acc ; [L688] retValue_acc = pumpRunning [L689] return (retValue_acc); [L902] RET, EXPR isPumpRunning() [L902] tmp___0 = isPumpRunning() [L904] COND TRUE \read(tmp___0) [L906] CALL __automaton_fail() [L887] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 222 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 36.7s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 30.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1133 SDtfs, 2290 SDslu, 1327 SDs, 0 SdLazy, 6355 SolverSat, 1427 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 391 GetRequests, 259 SyntacticMatches, 4 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 15.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=599occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 680 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 861 NumberOfCodeBlocks, 861 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 719 ConstructedInterpolants, 0 QuantifiedInterpolants, 229226 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...