/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:05:26,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:05:26,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:05:26,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:05:26,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:05:26,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:05:26,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:05:26,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:05:26,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:05:26,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:05:26,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:05:26,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:05:26,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:05:26,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:05:26,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:05:26,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:05:26,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:05:26,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:05:26,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:05:26,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:05:26,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:05:26,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:05:26,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:05:26,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:05:26,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:05:26,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:05:26,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:05:27,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:05:27,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:05:27,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:05:27,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:05:27,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:05:27,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:05:27,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:05:27,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:05:27,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:05:27,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:05:27,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:05:27,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:05:27,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:05:27,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:05:27,012 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 10:05:27,037 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:05:27,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:05:27,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:05:27,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:05:27,039 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:05:27,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:05:27,039 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:05:27,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:05:27,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:05:27,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:05:27,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:05:27,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:05:27,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:05:27,041 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:05:27,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:05:27,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:05:27,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:05:27,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:05:27,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:05:27,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:05:27,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:05:27,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:05:27,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:05:27,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:05:27,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:05:27,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:05:27,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:05:27,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:05:27,044 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:05:27,044 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:05:27,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:05:27,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:05:27,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:05:27,525 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:05:27,526 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:05:27,527 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c [2020-09-21 10:05:27,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa4bd5073/d51f155c06a8447b8f281ed9991564bc/FLAGb11dccb6e [2020-09-21 10:05:28,174 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:05:28,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c [2020-09-21 10:05:28,190 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa4bd5073/d51f155c06a8447b8f281ed9991564bc/FLAGb11dccb6e [2020-09-21 10:05:28,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa4bd5073/d51f155c06a8447b8f281ed9991564bc [2020-09-21 10:05:28,468 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:05:28,476 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:05:28,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:05:28,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:05:28,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:05:28,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:05:28" (1/1) ... [2020-09-21 10:05:28,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:28, skipping insertion in model container [2020-09-21 10:05:28,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:05:28" (1/1) ... [2020-09-21 10:05:28,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:05:28,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:05:29,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:05:29,085 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:05:29,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:05:29,263 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:05:29,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29 WrapperNode [2020-09-21 10:05:29,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:05:29,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:05:29,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:05:29,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:05:29,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29" (1/1) ... [2020-09-21 10:05:29,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29" (1/1) ... [2020-09-21 10:05:29,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29" (1/1) ... [2020-09-21 10:05:29,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29" (1/1) ... [2020-09-21 10:05:29,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29" (1/1) ... [2020-09-21 10:05:29,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29" (1/1) ... [2020-09-21 10:05:29,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29" (1/1) ... [2020-09-21 10:05:29,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:05:29,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:05:29,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:05:29,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:05:29,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:05:29,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:05:29,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:05:29,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:05:29,461 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:05:29,462 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:05:29,462 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:05:29,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:05:29,463 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:05:29,463 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:05:29,463 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 10:05:29,464 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:05:29,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:05:29,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:05:29,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:05:29,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:05:29,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:05:29,466 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:05:29,466 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:05:29,466 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:05:29,467 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:05:29,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:05:29,468 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:05:29,468 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:05:29,468 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:05:29,468 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:05:29,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-21 10:05:29,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-21 10:05:29,470 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:05:29,470 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:05:29,470 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:05:29,470 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:05:29,470 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-21 10:05:29,471 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:05:29,471 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:05:29,471 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:05:29,471 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:05:29,471 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:05:29,471 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 10:05:29,471 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 10:05:29,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:05:29,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:05:29,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:05:29,472 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:05:29,472 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:05:29,472 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:05:29,472 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:05:29,472 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:05:29,472 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:05:29,472 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:05:29,472 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 10:05:29,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:05:29,473 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:05:29,473 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:05:29,473 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:05:29,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:05:29,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:05:29,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:05:29,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:05:29,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:05:29,474 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:05:29,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:05:29,474 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:05:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:05:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:05:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:05:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:05:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:05:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:05:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:05:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:05:29,475 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:05:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:05:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-21 10:05:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:05:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:05:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:05:29,476 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:05:29,477 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:05:29,477 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:05:29,477 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:05:29,477 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:05:29,477 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:05:29,477 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-21 10:05:29,478 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 10:05:29,478 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:05:29,478 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:05:29,478 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:05:29,478 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:05:29,479 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 10:05:29,479 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-21 10:05:29,479 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:05:29,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:05:29,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:05:29,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:05:30,507 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:05:30,507 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:05:30,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:05:30 BoogieIcfgContainer [2020-09-21 10:05:30,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:05:30,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:05:30,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:05:30,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:05:30,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:05:28" (1/3) ... [2020-09-21 10:05:30,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63db1856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:05:30, skipping insertion in model container [2020-09-21 10:05:30,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:05:29" (2/3) ... [2020-09-21 10:05:30,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63db1856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:05:30, skipping insertion in model container [2020-09-21 10:05:30,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:05:30" (3/3) ... [2020-09-21 10:05:30,529 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product43.cil.c [2020-09-21 10:05:30,539 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:05:30,549 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:05:30,567 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:05:30,596 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:05:30,596 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:05:30,596 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:05:30,597 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:05:30,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:05:30,597 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:05:30,597 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:05:30,597 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:05:30,623 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-09-21 10:05:30,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 10:05:30,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:30,636 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] [2020-09-21 10:05:30,637 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:30,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:30,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1550952004, now seen corresponding path program 1 times [2020-09-21 10:05:30,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:30,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972460138] [2020-09-21 10:05:30,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:31,391 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:31,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:31,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:31,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:31,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:31,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:31,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:31,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:05:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:31,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:05:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:31,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:31,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972460138] [2020-09-21 10:05:31,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:31,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:05:31,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806903454] [2020-09-21 10:05:31,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:05:31,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:31,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:05:31,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:05:31,528 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 4 states. [2020-09-21 10:05:32,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:32,770 INFO L93 Difference]: Finished difference Result 295 states and 383 transitions. [2020-09-21 10:05:32,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:05:32,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-21 10:05:32,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:32,790 INFO L225 Difference]: With dead ends: 295 [2020-09-21 10:05:32,790 INFO L226 Difference]: Without dead ends: 165 [2020-09-21 10:05:32,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:05:32,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-21 10:05:32,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 131. [2020-09-21 10:05:32,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-21 10:05:32,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 153 transitions. [2020-09-21 10:05:32,903 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 153 transitions. Word has length 51 [2020-09-21 10:05:32,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:32,904 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 153 transitions. [2020-09-21 10:05:32,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:05:32,904 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 153 transitions. [2020-09-21 10:05:32,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 10:05:32,908 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:32,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:05:32,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:05:32,909 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:32,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:32,909 INFO L82 PathProgramCache]: Analyzing trace with hash -185895496, now seen corresponding path program 1 times [2020-09-21 10:05:32,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:32,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824462993] [2020-09-21 10:05:32,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:33,319 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:33,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:33,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:33,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:33,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:33,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:33,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:33,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:05:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:33,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:05:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:33,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824462993] [2020-09-21 10:05:33,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:33,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:05:33,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873340005] [2020-09-21 10:05:33,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:05:33,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:33,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:05:33,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:05:33,386 INFO L87 Difference]: Start difference. First operand 131 states and 153 transitions. Second operand 5 states. [2020-09-21 10:05:33,909 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:34,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:34,802 INFO L93 Difference]: Finished difference Result 231 states and 284 transitions. [2020-09-21 10:05:34,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:05:34,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-09-21 10:05:34,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:34,806 INFO L225 Difference]: With dead ends: 231 [2020-09-21 10:05:34,807 INFO L226 Difference]: Without dead ends: 155 [2020-09-21 10:05:34,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:05:34,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-21 10:05:34,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 122. [2020-09-21 10:05:34,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-21 10:05:34,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 141 transitions. [2020-09-21 10:05:34,857 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 141 transitions. Word has length 52 [2020-09-21 10:05:34,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:34,858 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 141 transitions. [2020-09-21 10:05:34,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:05:34,858 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 141 transitions. [2020-09-21 10:05:34,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-21 10:05:34,860 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:34,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:05:34,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:05:34,861 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:34,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:34,861 INFO L82 PathProgramCache]: Analyzing trace with hash 794087253, now seen corresponding path program 1 times [2020-09-21 10:05:34,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:34,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084542447] [2020-09-21 10:05:34,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:35,274 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:35,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:35,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:35,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:35,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:35,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:35,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:35,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 10:05:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:35,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:05:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:35,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084542447] [2020-09-21 10:05:35,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:35,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:05:35,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795881542] [2020-09-21 10:05:35,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:05:35,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:35,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:05:35,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:05:35,398 INFO L87 Difference]: Start difference. First operand 122 states and 141 transitions. Second operand 9 states. [2020-09-21 10:05:35,839 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:36,238 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:36,543 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:36,839 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:37,756 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:39,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:39,688 INFO L93 Difference]: Finished difference Result 414 states and 517 transitions. [2020-09-21 10:05:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 10:05:39,690 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-09-21 10:05:39,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:39,694 INFO L225 Difference]: With dead ends: 414 [2020-09-21 10:05:39,694 INFO L226 Difference]: Without dead ends: 320 [2020-09-21 10:05:39,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-09-21 10:05:39,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-09-21 10:05:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 247. [2020-09-21 10:05:39,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-09-21 10:05:39,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 296 transitions. [2020-09-21 10:05:39,792 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 296 transitions. Word has length 56 [2020-09-21 10:05:39,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:39,793 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 296 transitions. [2020-09-21 10:05:39,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:05:39,793 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 296 transitions. [2020-09-21 10:05:39,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-21 10:05:39,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:39,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:05:39,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:05:39,796 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:39,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:39,796 INFO L82 PathProgramCache]: Analyzing trace with hash -2145966964, now seen corresponding path program 1 times [2020-09-21 10:05:39,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:39,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688809008] [2020-09-21 10:05:39,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:40,162 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:40,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:40,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:40,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:40,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:40,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:40,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:40,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:05:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:40,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:05:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:40,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 10:05:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:40,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:40,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688809008] [2020-09-21 10:05:40,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:40,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:05:40,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107722894] [2020-09-21 10:05:40,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:05:40,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:40,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:05:40,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:05:40,275 INFO L87 Difference]: Start difference. First operand 247 states and 296 transitions. Second operand 9 states. [2020-09-21 10:05:40,734 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:42,039 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:42,418 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:42,728 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:43,039 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:44,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:44,265 INFO L93 Difference]: Finished difference Result 791 states and 1035 transitions. [2020-09-21 10:05:44,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 10:05:44,266 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-09-21 10:05:44,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:44,273 INFO L225 Difference]: With dead ends: 791 [2020-09-21 10:05:44,274 INFO L226 Difference]: Without dead ends: 572 [2020-09-21 10:05:44,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-09-21 10:05:44,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-09-21 10:05:44,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 442. [2020-09-21 10:05:44,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-09-21 10:05:44,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 532 transitions. [2020-09-21 10:05:44,433 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 532 transitions. Word has length 62 [2020-09-21 10:05:44,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:44,434 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 532 transitions. [2020-09-21 10:05:44,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:05:44,434 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 532 transitions. [2020-09-21 10:05:44,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-21 10:05:44,436 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:44,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:05:44,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:05:44,437 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:44,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:44,438 INFO L82 PathProgramCache]: Analyzing trace with hash -664368024, now seen corresponding path program 1 times [2020-09-21 10:05:44,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:44,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505369414] [2020-09-21 10:05:44,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,805 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:44,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:05:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 10:05:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 10:05:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-21 10:05:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:44,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:05:44,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505369414] [2020-09-21 10:05:44,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:44,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 10:05:44,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043682297] [2020-09-21 10:05:44,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:05:44,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:44,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:05:44,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:05:44,939 INFO L87 Difference]: Start difference. First operand 442 states and 532 transitions. Second operand 10 states. [2020-09-21 10:05:45,451 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:46,642 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:47,014 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:47,319 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:48,075 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:49,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:49,255 INFO L93 Difference]: Finished difference Result 1232 states and 1648 transitions. [2020-09-21 10:05:49,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-21 10:05:49,256 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-09-21 10:05:49,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:49,263 INFO L225 Difference]: With dead ends: 1232 [2020-09-21 10:05:49,264 INFO L226 Difference]: Without dead ends: 818 [2020-09-21 10:05:49,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-09-21 10:05:49,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-09-21 10:05:49,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 633. [2020-09-21 10:05:49,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-09-21 10:05:49,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 763 transitions. [2020-09-21 10:05:49,423 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 763 transitions. Word has length 66 [2020-09-21 10:05:49,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:49,424 INFO L479 AbstractCegarLoop]: Abstraction has 633 states and 763 transitions. [2020-09-21 10:05:49,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:05:49,424 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 763 transitions. [2020-09-21 10:05:49,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-09-21 10:05:49,427 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:49,427 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:05:49,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:05:49,428 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:49,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:49,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1705973146, now seen corresponding path program 1 times [2020-09-21 10:05:49,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:49,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467766711] [2020-09-21 10:05:49,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,782 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:49,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:05:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:05:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:05:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:05:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-21 10:05:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-21 10:05:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:05:49,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467766711] [2020-09-21 10:05:49,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:49,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 10:05:49,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41423883] [2020-09-21 10:05:49,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:05:49,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:49,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:05:49,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:05:49,968 INFO L87 Difference]: Start difference. First operand 633 states and 763 transitions. Second operand 10 states. [2020-09-21 10:05:50,436 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:05:51,488 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:51,806 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:05:52,122 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:52,430 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:54,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:54,620 INFO L93 Difference]: Finished difference Result 2244 states and 3169 transitions. [2020-09-21 10:05:54,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-21 10:05:54,621 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-09-21 10:05:54,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:54,633 INFO L225 Difference]: With dead ends: 2244 [2020-09-21 10:05:54,633 INFO L226 Difference]: Without dead ends: 1639 [2020-09-21 10:05:54,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-09-21 10:05:54,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2020-09-21 10:05:54,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1215. [2020-09-21 10:05:54,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1215 states. [2020-09-21 10:05:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1468 transitions. [2020-09-21 10:05:54,899 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1468 transitions. Word has length 98 [2020-09-21 10:05:54,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:54,899 INFO L479 AbstractCegarLoop]: Abstraction has 1215 states and 1468 transitions. [2020-09-21 10:05:54,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:05:54,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1468 transitions. [2020-09-21 10:05:54,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-09-21 10:05:54,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:54,906 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:05:54,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:05:54,906 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:54,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:54,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1619413127, now seen corresponding path program 1 times [2020-09-21 10:05:54,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:54,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136687408] [2020-09-21 10:05:54,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,203 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:55,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:05:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:05:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:05:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:05:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-21 10:05:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-21 10:05:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:55,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:05:55,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136687408] [2020-09-21 10:05:55,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:55,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 10:05:55,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500678964] [2020-09-21 10:05:55,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:05:55,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:55,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:05:55,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:05:55,415 INFO L87 Difference]: Start difference. First operand 1215 states and 1468 transitions. Second operand 10 states. [2020-09-21 10:05:56,792 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:05:57,127 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-21 10:05:57,450 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:57,750 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:05:59,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:05:59,023 INFO L93 Difference]: Finished difference Result 2855 states and 3863 transitions. [2020-09-21 10:05:59,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 10:05:59,024 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 98 [2020-09-21 10:05:59,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:05:59,034 INFO L225 Difference]: With dead ends: 2855 [2020-09-21 10:05:59,034 INFO L226 Difference]: Without dead ends: 1668 [2020-09-21 10:05:59,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:05:59,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-09-21 10:05:59,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1255. [2020-09-21 10:05:59,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2020-09-21 10:05:59,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1508 transitions. [2020-09-21 10:05:59,364 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1508 transitions. Word has length 98 [2020-09-21 10:05:59,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:05:59,365 INFO L479 AbstractCegarLoop]: Abstraction has 1255 states and 1508 transitions. [2020-09-21 10:05:59,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:05:59,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1508 transitions. [2020-09-21 10:05:59,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-09-21 10:05:59,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:05:59,369 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:05:59,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:05:59,369 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:05:59,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:05:59,370 INFO L82 PathProgramCache]: Analyzing trace with hash -429974715, now seen corresponding path program 1 times [2020-09-21 10:05:59,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:05:59,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260951798] [2020-09-21 10:05:59,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:05:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:59,675 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:05:59,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:05:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:59,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:05:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:59,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:05:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:59,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:59,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:05:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:59,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:05:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:59,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:05:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:59,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:05:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:59,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:05:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:59,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:59,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:05:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:59,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:59,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:05:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:59,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:05:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:59,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-21 10:05:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:59,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-21 10:05:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:05:59,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 10:05:59,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260951798] [2020-09-21 10:05:59,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:05:59,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 10:05:59,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863077585] [2020-09-21 10:05:59,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:05:59,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:05:59,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:05:59,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:05:59,906 INFO L87 Difference]: Start difference. First operand 1255 states and 1508 transitions. Second operand 12 states. [2020-09-21 10:06:00,577 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:00,877 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:01,163 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:01,986 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:02,301 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:02,609 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 10:06:04,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:04,037 INFO L93 Difference]: Finished difference Result 2487 states and 3257 transitions. [2020-09-21 10:06:04,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 10:06:04,038 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 98 [2020-09-21 10:06:04,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:04,046 INFO L225 Difference]: With dead ends: 2487 [2020-09-21 10:06:04,047 INFO L226 Difference]: Without dead ends: 1260 [2020-09-21 10:06:04,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-09-21 10:06:04,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2020-09-21 10:06:04,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 983. [2020-09-21 10:06:04,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2020-09-21 10:06:04,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1152 transitions. [2020-09-21 10:06:04,211 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1152 transitions. Word has length 98 [2020-09-21 10:06:04,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:04,211 INFO L479 AbstractCegarLoop]: Abstraction has 983 states and 1152 transitions. [2020-09-21 10:06:04,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:06:04,211 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1152 transitions. [2020-09-21 10:06:04,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-21 10:06:04,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:04,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:06:04,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:06:04,215 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:04,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:04,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1139994370, now seen corresponding path program 1 times [2020-09-21 10:06:04,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:04,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801969262] [2020-09-21 10:06:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,590 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:04,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:06:04,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:06:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:06:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-21 10:06:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-21 10:06:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:04,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 10:06:04,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801969262] [2020-09-21 10:06:04,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:06:04,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-21 10:06:04,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975626120] [2020-09-21 10:06:04,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-21 10:06:04,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:04,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-21 10:06:04,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-09-21 10:06:04,972 INFO L87 Difference]: Start difference. First operand 983 states and 1152 transitions. Second operand 18 states. [2020-09-21 10:06:05,548 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:05,949 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-21 10:06:06,268 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:06,567 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-21 10:06:07,365 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:08,074 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:08,540 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:09,805 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:10,144 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:10,705 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:11,032 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-21 10:06:11,711 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-09-21 10:06:12,398 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-09-21 10:06:13,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:13,950 INFO L93 Difference]: Finished difference Result 2215 states and 2783 transitions. [2020-09-21 10:06:13,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-09-21 10:06:13,950 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 102 [2020-09-21 10:06:13,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:13,960 INFO L225 Difference]: With dead ends: 2215 [2020-09-21 10:06:13,960 INFO L226 Difference]: Without dead ends: 1260 [2020-09-21 10:06:13,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=506, Invalid=2044, Unknown=0, NotChecked=0, Total=2550 [2020-09-21 10:06:13,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2020-09-21 10:06:14,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 989. [2020-09-21 10:06:14,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 989 states. [2020-09-21 10:06:14,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1147 transitions. [2020-09-21 10:06:14,166 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1147 transitions. Word has length 102 [2020-09-21 10:06:14,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:14,168 INFO L479 AbstractCegarLoop]: Abstraction has 989 states and 1147 transitions. [2020-09-21 10:06:14,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-21 10:06:14,168 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1147 transitions. [2020-09-21 10:06:14,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-21 10:06:14,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:14,174 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, 1, 1, 1, 1, 1] [2020-09-21 10:06:14,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:06:14,175 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:14,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:14,176 INFO L82 PathProgramCache]: Analyzing trace with hash -194664218, now seen corresponding path program 1 times [2020-09-21 10:06:14,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:14,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912979078] [2020-09-21 10:06:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,493 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:06:14,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:06:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:06:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:06:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:06:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 10:06:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:06:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:06:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:06:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:06:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:06:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:06:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-21 10:06:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-21 10:06:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-21 10:06:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:06:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-21 10:06:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-21 10:06:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:06:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 10:06:14,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912979078] [2020-09-21 10:06:14,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:06:14,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 10:06:14,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622179819] [2020-09-21 10:06:14,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:06:14,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:06:14,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:06:14,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:06:14,731 INFO L87 Difference]: Start difference. First operand 989 states and 1147 transitions. Second operand 9 states. [2020-09-21 10:06:15,227 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 10:06:17,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:06:17,929 INFO L93 Difference]: Finished difference Result 1895 states and 2428 transitions. [2020-09-21 10:06:17,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-21 10:06:17,930 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 137 [2020-09-21 10:06:17,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:06:17,941 INFO L225 Difference]: With dead ends: 1895 [2020-09-21 10:06:17,941 INFO L226 Difference]: Without dead ends: 1892 [2020-09-21 10:06:17,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2020-09-21 10:06:17,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2020-09-21 10:06:18,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1482. [2020-09-21 10:06:18,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1482 states. [2020-09-21 10:06:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 1712 transitions. [2020-09-21 10:06:18,251 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 1712 transitions. Word has length 137 [2020-09-21 10:06:18,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:06:18,252 INFO L479 AbstractCegarLoop]: Abstraction has 1482 states and 1712 transitions. [2020-09-21 10:06:18,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:06:18,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 1712 transitions. [2020-09-21 10:06:18,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-21 10:06:18,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:06:18,258 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:06:18,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:06:18,259 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:06:18,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:06:18,259 INFO L82 PathProgramCache]: Analyzing trace with hash -155772784, now seen corresponding path program 1 times [2020-09-21 10:06:18,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:06:18,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887542124] [2020-09-21 10:06:18,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:06:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:06:18,358 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:06:18,359 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:06:18,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 10:06:18,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:06:18 BoogieIcfgContainer [2020-09-21 10:06:18,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:06:18,421 INFO L168 Benchmark]: Toolchain (without parser) took 49947.06 ms. Allocated memory was 140.5 MB in the beginning and 761.8 MB in the end (delta: 621.3 MB). Free memory was 101.3 MB in the beginning and 664.5 MB in the end (delta: -563.2 MB). Peak memory consumption was 58.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:06:18,422 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 10:06:18,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 785.62 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 171.2 MB in the end (delta: -70.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-09-21 10:06:18,427 INFO L168 Benchmark]: Boogie Preprocessor took 106.04 ms. Allocated memory is still 203.9 MB. Free memory was 171.2 MB in the beginning and 166.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:06:18,429 INFO L168 Benchmark]: RCFGBuilder took 1145.27 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 166.6 MB in the beginning and 194.3 MB in the end (delta: -27.7 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:06:18,430 INFO L168 Benchmark]: TraceAbstraction took 47893.83 ms. Allocated memory was 235.9 MB in the beginning and 761.8 MB in the end (delta: 525.9 MB). Free memory was 192.9 MB in the beginning and 664.5 MB in the end (delta: -471.6 MB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:06:18,439 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 785.62 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 100.7 MB in the beginning and 171.2 MB in the end (delta: -70.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.04 ms. Allocated memory is still 203.9 MB. Free memory was 171.2 MB in the beginning and 166.6 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1145.27 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 166.6 MB in the beginning and 194.3 MB in the end (delta: -27.7 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 47893.83 ms. Allocated memory was 235.9 MB in the beginning and 761.8 MB in the end (delta: 525.9 MB). Free memory was 192.9 MB in the beginning and 664.5 MB in the end (delta: -471.6 MB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 946]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L507] int cleanupTimeShifts = 4; [L648] int methAndRunningLastTime ; [L757] int pumpRunning = 0; [L758] int systemActive = 1; [L588] int retValue_acc ; [L589] int tmp ; [L593] FCALL select_helpers() [L594] FCALL select_features() [L595] CALL, EXPR valid_product() [L637] int retValue_acc ; [L640] retValue_acc = 1 [L641] return (retValue_acc); [L595] RET, EXPR valid_product() [L595] tmp = valid_product() [L597] COND TRUE \read(tmp) [L599] FCALL setup() [L600] CALL runTest() [L578] CALL __utac_acc__Specification2_spec__1() [L653] methAndRunningLastTime = 0 [L578] RET __utac_acc__Specification2_spec__1() [L579] CALL test() [L689] int splverifierCounter ; [L690] int tmp ; [L691] int tmp___0 ; [L692] int tmp___1 ; [L693] int tmp___2 ; [L696] splverifierCounter = 0 [L698] COND TRUE 1 [L700] COND TRUE splverifierCounter < 4 [L706] tmp = __VERIFIER_nondet_int() [L708] COND TRUE \read(tmp) [L710] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L710] RET waterRise() [L716] tmp___0 = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp___0)) [L726] tmp___2 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___2) [L743] CALL timeShift() [L764] COND FALSE !(\read(pumpRunning)) [L771] COND TRUE \read(systemActive) [L773] CALL processEnvironment() [L793] int tmp ; [L796] COND TRUE ! pumpRunning [L798] CALL, EXPR isHighWaterLevel() [L908] int retValue_acc ; [L909] int tmp ; [L910] int tmp___0 ; [L914] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L914] RET, EXPR isHighWaterSensorDry() [L914] tmp = isHighWaterSensorDry() [L916] COND FALSE !(\read(tmp)) [L919] tmp___0 = 1 [L921] retValue_acc = tmp___0 [L922] return (retValue_acc); [L798] RET, EXPR isHighWaterLevel() [L798] tmp = isHighWaterLevel() [L800] COND TRUE \read(tmp) [L802] CALL activatePump() [L827] int tmp ; [L831] CALL, EXPR isMethaneAlarm() [L852] int retValue_acc ; [L856] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L856] RET, EXPR isMethaneLevelCritical() [L856] retValue_acc = isMethaneLevelCritical() [L858] return (retValue_acc); [L831] RET, EXPR isMethaneAlarm() [L831] tmp = isMethaneAlarm() [L833] COND FALSE !(\read(tmp)) [L837] CALL activatePump__wrappee__highWaterSensor() [L821] pumpRunning = 1 [L837] RET activatePump__wrappee__highWaterSensor() [L802] RET activatePump() [L773] RET processEnvironment() [L779] CALL __utac_acc__Specification2_spec__2() [L658] int tmp ; [L659] int tmp___0 ; [L663] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L663] RET, EXPR isMethaneLevelCritical() [L663] tmp = isMethaneLevelCritical() [L665] COND FALSE !(\read(tmp)) [L681] methAndRunningLastTime = 0 [L779] RET __utac_acc__Specification2_spec__2() [L743] RET timeShift() [L698] COND TRUE 1 [L700] COND TRUE splverifierCounter < 4 [L706] tmp = __VERIFIER_nondet_int() [L708] COND FALSE !(\read(tmp)) [L716] tmp___0 = __VERIFIER_nondet_int() [L718] COND TRUE \read(tmp___0) [L720] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L720] RET changeMethaneLevel() [L726] tmp___2 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___2) [L743] CALL timeShift() [L764] COND TRUE \read(pumpRunning) [L766] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L766] RET lowerWaterLevel() [L771] COND TRUE \read(systemActive) [L773] CALL processEnvironment() [L793] int tmp ; [L796] COND FALSE !(! pumpRunning) [L811] FCALL processEnvironment__wrappee__base() [L773] RET processEnvironment() [L779] CALL __utac_acc__Specification2_spec__2() [L658] int tmp ; [L659] int tmp___0 ; [L663] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L663] RET, EXPR isMethaneLevelCritical() [L663] tmp = isMethaneLevelCritical() [L665] COND TRUE \read(tmp) [L667] CALL, EXPR isPumpRunning() [L863] int retValue_acc ; [L866] retValue_acc = pumpRunning [L867] return (retValue_acc); [L667] RET, EXPR isPumpRunning() [L667] tmp___0 = isPumpRunning() [L669] COND TRUE \read(tmp___0) [L670] COND FALSE !(\read(methAndRunningLastTime)) [L675] methAndRunningLastTime = 1 [L779] RET __utac_acc__Specification2_spec__2() [L743] RET timeShift() [L698] COND TRUE 1 [L700] COND TRUE splverifierCounter < 4 [L706] tmp = __VERIFIER_nondet_int() [L708] COND FALSE !(\read(tmp)) [L716] tmp___0 = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp___0)) [L726] tmp___2 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___2) [L743] CALL timeShift() [L764] COND TRUE \read(pumpRunning) [L766] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L766] RET lowerWaterLevel() [L771] COND TRUE \read(systemActive) [L773] CALL processEnvironment() [L793] int tmp ; [L796] COND FALSE !(! pumpRunning) [L811] FCALL processEnvironment__wrappee__base() [L773] RET processEnvironment() [L779] CALL __utac_acc__Specification2_spec__2() [L658] int tmp ; [L659] int tmp___0 ; [L663] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L663] RET, EXPR isMethaneLevelCritical() [L663] tmp = isMethaneLevelCritical() [L665] COND TRUE \read(tmp) [L667] CALL, EXPR isPumpRunning() [L863] int retValue_acc ; [L866] retValue_acc = pumpRunning [L867] return (retValue_acc); [L667] RET, EXPR isPumpRunning() [L667] tmp___0 = isPumpRunning() [L669] COND TRUE \read(tmp___0) [L670] COND TRUE \read(methAndRunningLastTime) [L672] CALL __automaton_fail() [L946] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 233 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 47.7s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 39.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1173 SDtfs, 3840 SDslu, 1772 SDs, 0 SdLazy, 8588 SolverSat, 2673 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 507 GetRequests, 308 SyntacticMatches, 1 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 17.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1482occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 2250 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 999 NumberOfCodeBlocks, 999 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 810 ConstructedInterpolants, 0 QuantifiedInterpolants, 272874 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 38/42 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...