/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_spec1_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:18:58,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:18:58,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:18:58,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:18:58,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:18:58,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:18:58,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:18:58,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:18:58,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:18:58,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:18:58,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:18:58,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:18:58,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:18:58,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:18:58,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:18:58,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:18:58,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:18:58,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:18:58,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:18:58,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:18:58,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:18:58,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:18:58,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:18:58,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:18:58,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:18:58,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:18:58,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:18:58,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:18:58,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:18:58,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:18:58,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:18:58,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:18:58,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:18:58,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:18:58,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:18:58,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:18:58,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:18:58,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:18:58,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:18:58,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:18:58,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:18:58,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 10:18:58,158 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:18:58,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:18:58,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:18:58,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:18:58,160 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:18:58,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:18:58,161 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:18:58,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:18:58,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:18:58,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:18:58,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:18:58,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:18:58,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:18:58,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:18:58,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:18:58,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:18:58,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:18:58,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:18:58,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:18:58,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:18:58,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:18:58,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:18:58,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:18:58,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:18:58,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:18:58,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:18:58,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:18:58,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:18:58,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:18:58,166 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 [2020-08-18 10:18:58,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:18:58,504 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:18:58,508 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:18:58,510 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:18:58,511 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:18:58,511 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_productSimulator.cil.c [2020-08-18 10:18:58,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d664f1d50/3898a0e50582474d9bd58232d502e034/FLAG07a8b0515 [2020-08-18 10:18:59,114 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:18:59,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_productSimulator.cil.c [2020-08-18 10:18:59,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d664f1d50/3898a0e50582474d9bd58232d502e034/FLAG07a8b0515 [2020-08-18 10:18:59,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d664f1d50/3898a0e50582474d9bd58232d502e034 [2020-08-18 10:18:59,421 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:18:59,423 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:18:59,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:18:59,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:18:59,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:18:59,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:18:59" (1/1) ... [2020-08-18 10:18:59,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:18:59, skipping insertion in model container [2020-08-18 10:18:59,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:18:59" (1/1) ... [2020-08-18 10:18:59,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:18:59,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:19:00,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:19:00,144 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:19:00,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:19:00,335 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:19:00,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:19:00 WrapperNode [2020-08-18 10:19:00,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:19:00,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:19:00,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:19:00,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:19:00,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:19:00" (1/1) ... [2020-08-18 10:19:00,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:19:00" (1/1) ... [2020-08-18 10:19:00,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:19:00" (1/1) ... [2020-08-18 10:19:00,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:19:00" (1/1) ... [2020-08-18 10:19:00,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:19:00" (1/1) ... [2020-08-18 10:19:00,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:19:00" (1/1) ... [2020-08-18 10:19:00,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:19:00" (1/1) ... [2020-08-18 10:19:00,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:19:00,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:19:00,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:19:00,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:19:00,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:19:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:19:00,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:19:00,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:19:00,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:19:00,542 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:19:00,542 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:19:00,542 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-08-18 10:19:00,542 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-08-18 10:19:00,543 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-08-18 10:19:00,543 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-08-18 10:19:00,543 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-08-18 10:19:00,543 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-08-18 10:19:00,543 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:19:00,544 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-08-18 10:19:00,544 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-08-18 10:19:00,544 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:19:00,544 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:19:00,544 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:19:00,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:19:00,545 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:19:00,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 10:19:00,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 10:19:00,545 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 10:19:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 10:19:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:19:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:19:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:19:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:19:00,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:19:00,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:19:00,547 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:19:00,547 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:19:00,547 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:19:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:19:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 10:19:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:19:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:19:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:19:00,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:19:00,549 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:19:00,549 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:19:00,549 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 10:19:00,549 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 10:19:00,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:19:00,549 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:19:00,550 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:19:00,550 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:19:00,550 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:19:00,550 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:19:00,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:19:00,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:19:00,551 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:19:00,551 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:19:00,551 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:19:00,551 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 10:19:00,551 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 10:19:00,551 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:19:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:19:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:19:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:19:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:19:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:19:00,552 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 10:19:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 10:19:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:19:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:19:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:19:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:19:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 10:19:00,553 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:19:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-08-18 10:19:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 10:19:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-08-18 10:19:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-08-18 10:19:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 10:19:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-08-18 10:19:00,554 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-08-18 10:19:00,555 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:19:00,555 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-08-18 10:19:00,555 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-08-18 10:19:00,555 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-08-18 10:19:00,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:19:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:19:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:19:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:19:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:19:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:19:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:19:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:19:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:19:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:19:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:19:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:19:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:19:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:19:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:19:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:19:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:19:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:19:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:19:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:19:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:19:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:19:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:19:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:19:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:19:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:19:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:19:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:19:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:19:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:19:01,699 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:19:01,700 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:19:01,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:19:01 BoogieIcfgContainer [2020-08-18 10:19:01,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:19:01,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:19:01,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:19:01,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:19:01,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:18:59" (1/3) ... [2020-08-18 10:19:01,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7409d402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:19:01, skipping insertion in model container [2020-08-18 10:19:01,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:19:00" (2/3) ... [2020-08-18 10:19:01,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7409d402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:19:01, skipping insertion in model container [2020-08-18 10:19:01,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:19:01" (3/3) ... [2020-08-18 10:19:01,715 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_productSimulator.cil.c [2020-08-18 10:19:01,726 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:19:01,735 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:19:01,751 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:19:01,777 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:19:01,777 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:19:01,777 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:19:01,777 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:19:01,777 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:19:01,777 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:19:01,778 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:19:01,778 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:19:01,801 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-08-18 10:19:01,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 10:19:01,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:19:01,815 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:19:01,815 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:19:01,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:19:01,821 INFO L82 PathProgramCache]: Analyzing trace with hash -777436733, now seen corresponding path program 1 times [2020-08-18 10:19:01,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:19:01,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590121768] [2020-08-18 10:19:01,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:19:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:02,605 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 10:19:02,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:19:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:02,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:19:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:02,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:19:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:02,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:02,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:19:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:02,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 10:19:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:02,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:19:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:02,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 10:19:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:02,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:19:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:02,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:19:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:02,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:19:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:02,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 10:19:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:02,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 10:19:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:02,891 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 10:19:02,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590121768] [2020-08-18 10:19:02,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:19:02,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 10:19:02,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383829397] [2020-08-18 10:19:02,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 10:19:02,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:19:02,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 10:19:02,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:19:02,918 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 5 states. [2020-08-18 10:19:05,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:19:05,144 INFO L93 Difference]: Finished difference Result 436 states and 577 transitions. [2020-08-18 10:19:05,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 10:19:05,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-08-18 10:19:05,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:19:05,164 INFO L225 Difference]: With dead ends: 436 [2020-08-18 10:19:05,164 INFO L226 Difference]: Without dead ends: 248 [2020-08-18 10:19:05,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:19:05,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-18 10:19:05,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 199. [2020-08-18 10:19:05,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-08-18 10:19:05,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 245 transitions. [2020-08-18 10:19:05,291 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 245 transitions. Word has length 78 [2020-08-18 10:19:05,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:19:05,292 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 245 transitions. [2020-08-18 10:19:05,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 10:19:05,292 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 245 transitions. [2020-08-18 10:19:05,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 10:19:05,297 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:19:05,297 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:19:05,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:19:05,298 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:19:05,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:19:05,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1216022007, now seen corresponding path program 1 times [2020-08-18 10:19:05,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:19:05,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269084890] [2020-08-18 10:19:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:19:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:05,718 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 10:19:05,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:19:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:05,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:19:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:05,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:19:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:05,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:05,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:19:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:05,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 10:19:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:05,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:19:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:05,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 10:19:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:05,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:19:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:05,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:19:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:05,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:19:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:05,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 10:19:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:05,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 10:19:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:05,832 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 10:19:05,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269084890] [2020-08-18 10:19:05,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:19:05,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 10:19:05,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689941810] [2020-08-18 10:19:05,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 10:19:05,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:19:05,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 10:19:05,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 10:19:05,836 INFO L87 Difference]: Start difference. First operand 199 states and 245 transitions. Second operand 6 states. [2020-08-18 10:19:06,546 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 10:19:08,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:19:08,254 INFO L93 Difference]: Finished difference Result 360 states and 455 transitions. [2020-08-18 10:19:08,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 10:19:08,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-08-18 10:19:08,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:19:08,261 INFO L225 Difference]: With dead ends: 360 [2020-08-18 10:19:08,261 INFO L226 Difference]: Without dead ends: 232 [2020-08-18 10:19:08,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:19:08,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-08-18 10:19:08,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 190. [2020-08-18 10:19:08,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-08-18 10:19:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 233 transitions. [2020-08-18 10:19:08,317 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 233 transitions. Word has length 79 [2020-08-18 10:19:08,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:19:08,318 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 233 transitions. [2020-08-18 10:19:08,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 10:19:08,318 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 233 transitions. [2020-08-18 10:19:08,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 10:19:08,321 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:19:08,321 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:19:08,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:19:08,321 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:19:08,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:19:08,322 INFO L82 PathProgramCache]: Analyzing trace with hash -2141579182, now seen corresponding path program 1 times [2020-08-18 10:19:08,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:19:08,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317319299] [2020-08-18 10:19:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:19:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:08,697 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 10:19:08,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:19:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:08,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:19:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:08,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:19:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:08,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:08,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:19:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:08,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 10:19:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:08,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:19:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:08,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 10:19:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:08,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:19:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:08,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:19:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:08,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:19:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:08,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 10:19:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:08,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 10:19:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 10:19:08,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317319299] [2020-08-18 10:19:08,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:19:08,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 10:19:08,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440941391] [2020-08-18 10:19:08,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 10:19:08,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:19:08,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 10:19:08,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:19:08,905 INFO L87 Difference]: Start difference. First operand 190 states and 233 transitions. Second operand 12 states. [2020-08-18 10:19:09,574 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 10:19:10,212 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-08-18 10:19:11,022 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-08-18 10:19:12,140 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 10:19:12,532 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-08-18 10:19:16,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:19:16,371 INFO L93 Difference]: Finished difference Result 619 states and 790 transitions. [2020-08-18 10:19:16,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 10:19:16,372 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-18 10:19:16,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:19:16,383 INFO L225 Difference]: With dead ends: 619 [2020-08-18 10:19:16,383 INFO L226 Difference]: Without dead ends: 470 [2020-08-18 10:19:16,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-08-18 10:19:16,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-08-18 10:19:16,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 379. [2020-08-18 10:19:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2020-08-18 10:19:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 476 transitions. [2020-08-18 10:19:16,509 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 476 transitions. Word has length 84 [2020-08-18 10:19:16,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:19:16,510 INFO L479 AbstractCegarLoop]: Abstraction has 379 states and 476 transitions. [2020-08-18 10:19:16,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 10:19:16,510 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 476 transitions. [2020-08-18 10:19:16,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-18 10:19:16,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:19:16,513 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:19:16,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:19:16,513 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:19:16,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:19:16,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1535963779, now seen corresponding path program 1 times [2020-08-18 10:19:16,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:19:16,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521605818] [2020-08-18 10:19:16,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:19:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:16,887 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 10:19:16,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:19:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:16,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:19:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:16,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:19:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:16,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:16,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:19:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:16,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 10:19:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:16,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:19:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:16,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 10:19:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:16,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:19:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:16,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:19:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:16,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:19:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:16,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 10:19:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:17,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 10:19:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:17,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 10:19:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:17,037 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 10:19:17,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521605818] [2020-08-18 10:19:17,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:19:17,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 10:19:17,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269215854] [2020-08-18 10:19:17,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 10:19:17,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:19:17,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 10:19:17,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 10:19:17,040 INFO L87 Difference]: Start difference. First operand 379 states and 476 transitions. Second operand 10 states. [2020-08-18 10:19:17,548 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 10:19:19,161 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 10:19:19,688 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 10:19:19,950 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 10:19:20,330 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 10:19:20,904 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 10:19:23,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:19:23,172 INFO L93 Difference]: Finished difference Result 1218 states and 1607 transitions. [2020-08-18 10:19:23,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 10:19:23,174 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 90 [2020-08-18 10:19:23,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:19:23,184 INFO L225 Difference]: With dead ends: 1218 [2020-08-18 10:19:23,184 INFO L226 Difference]: Without dead ends: 880 [2020-08-18 10:19:23,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-08-18 10:19:23,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-08-18 10:19:23,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 696. [2020-08-18 10:19:23,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-08-18 10:19:23,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 880 transitions. [2020-08-18 10:19:23,362 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 880 transitions. Word has length 90 [2020-08-18 10:19:23,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:19:23,363 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 880 transitions. [2020-08-18 10:19:23,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 10:19:23,363 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 880 transitions. [2020-08-18 10:19:23,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-18 10:19:23,367 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:19:23,367 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:19:23,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:19:23,367 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:19:23,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:19:23,368 INFO L82 PathProgramCache]: Analyzing trace with hash -859073223, now seen corresponding path program 1 times [2020-08-18 10:19:23,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:19:23,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588864263] [2020-08-18 10:19:23,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:19:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:23,720 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 10:19:23,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:19:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:23,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:19:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:23,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:19:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:23,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:23,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:19:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:23,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 10:19:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:23,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:19:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:23,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 10:19:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:23,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:19:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:23,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:19:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:23,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:19:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:23,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 10:19:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:23,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 10:19:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:23,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 10:19:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:23,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 10:19:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:23,900 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 10:19:23,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588864263] [2020-08-18 10:19:23,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:19:23,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 10:19:23,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056849096] [2020-08-18 10:19:23,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 10:19:23,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:19:23,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 10:19:23,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:19:23,903 INFO L87 Difference]: Start difference. First operand 696 states and 880 transitions. Second operand 11 states. [2020-08-18 10:19:24,559 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 10:19:26,151 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 10:19:26,476 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 10:19:26,776 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 10:19:27,688 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 10:19:28,034 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 10:19:30,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:19:30,482 INFO L93 Difference]: Finished difference Result 1972 states and 2746 transitions. [2020-08-18 10:19:30,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 10:19:30,482 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-08-18 10:19:30,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:19:30,493 INFO L225 Difference]: With dead ends: 1972 [2020-08-18 10:19:30,494 INFO L226 Difference]: Without dead ends: 1317 [2020-08-18 10:19:30,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2020-08-18 10:19:30,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-08-18 10:19:30,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1112. [2020-08-18 10:19:30,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1112 states. [2020-08-18 10:19:30,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1445 transitions. [2020-08-18 10:19:30,729 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1445 transitions. Word has length 94 [2020-08-18 10:19:30,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:19:30,730 INFO L479 AbstractCegarLoop]: Abstraction has 1112 states and 1445 transitions. [2020-08-18 10:19:30,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 10:19:30,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1445 transitions. [2020-08-18 10:19:30,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-18 10:19:30,733 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:19:30,734 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:19:30,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:19:30,734 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:19:30,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:19:30,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1170559539, now seen corresponding path program 1 times [2020-08-18 10:19:30,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:19:30,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574449779] [2020-08-18 10:19:30,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:19:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,038 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 10:19:31,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:19:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:19:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:19:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:19:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 10:19:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:19:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 10:19:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:19:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:19:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:19:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 10:19:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 10:19:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:19:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:19:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-18 10:19:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 10:19:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:31,312 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 10:19:31,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574449779] [2020-08-18 10:19:31,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:19:31,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 10:19:31,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557756988] [2020-08-18 10:19:31,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 10:19:31,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:19:31,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 10:19:31,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-08-18 10:19:31,317 INFO L87 Difference]: Start difference. First operand 1112 states and 1445 transitions. Second operand 11 states. [2020-08-18 10:19:33,140 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 10:19:33,464 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-08-18 10:19:33,777 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 10:19:34,084 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-08-18 10:19:35,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:19:35,918 INFO L93 Difference]: Finished difference Result 2484 states and 3550 transitions. [2020-08-18 10:19:35,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 10:19:35,919 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 127 [2020-08-18 10:19:35,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:19:35,929 INFO L225 Difference]: With dead ends: 2484 [2020-08-18 10:19:35,930 INFO L226 Difference]: Without dead ends: 1413 [2020-08-18 10:19:35,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2020-08-18 10:19:35,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2020-08-18 10:19:36,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1138. [2020-08-18 10:19:36,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2020-08-18 10:19:36,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1473 transitions. [2020-08-18 10:19:36,256 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1473 transitions. Word has length 127 [2020-08-18 10:19:36,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:19:36,258 INFO L479 AbstractCegarLoop]: Abstraction has 1138 states and 1473 transitions. [2020-08-18 10:19:36,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 10:19:36,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1473 transitions. [2020-08-18 10:19:36,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-18 10:19:36,270 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:19:36,270 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:19:36,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:19:36,271 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:19:36,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:19:36,271 INFO L82 PathProgramCache]: Analyzing trace with hash 141200241, now seen corresponding path program 1 times [2020-08-18 10:19:36,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:19:36,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34415525] [2020-08-18 10:19:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:19:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,641 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 10:19:36,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:19:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:19:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:19:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:19:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 10:19:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:19:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 10:19:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:19:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:19:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:19:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 10:19:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 10:19:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:36,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:19:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:19:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-18 10:19:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 10:19:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 10:19:36,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34415525] [2020-08-18 10:19:36,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:19:36,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-18 10:19:36,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190610811] [2020-08-18 10:19:36,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 10:19:36,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:19:36,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 10:19:36,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-18 10:19:36,924 INFO L87 Difference]: Start difference. First operand 1138 states and 1473 transitions. Second operand 14 states. [2020-08-18 10:19:37,969 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 10:19:38,461 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 10:19:39,680 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 10:19:40,016 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 10:19:40,329 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-08-18 10:19:42,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:19:42,504 INFO L93 Difference]: Finished difference Result 2530 states and 3598 transitions. [2020-08-18 10:19:42,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 10:19:42,505 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 127 [2020-08-18 10:19:42,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:19:42,515 INFO L225 Difference]: With dead ends: 2530 [2020-08-18 10:19:42,515 INFO L226 Difference]: Without dead ends: 1433 [2020-08-18 10:19:42,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2020-08-18 10:19:42,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-08-18 10:19:42,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1154. [2020-08-18 10:19:42,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1154 states. [2020-08-18 10:19:42,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1489 transitions. [2020-08-18 10:19:42,824 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1489 transitions. Word has length 127 [2020-08-18 10:19:42,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:19:42,824 INFO L479 AbstractCegarLoop]: Abstraction has 1154 states and 1489 transitions. [2020-08-18 10:19:42,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 10:19:42,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1489 transitions. [2020-08-18 10:19:42,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-18 10:19:42,828 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:19:42,828 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:19:42,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 10:19:42,828 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:19:42,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:19:42,829 INFO L82 PathProgramCache]: Analyzing trace with hash 265273488, now seen corresponding path program 1 times [2020-08-18 10:19:42,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:19:42,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436541609] [2020-08-18 10:19:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:19:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,183 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-08-18 10:19:43,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:19:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:19:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 10:19:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:19:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 10:19:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:19:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 10:19:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-18 10:19:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:19:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:19:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 10:19:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 10:19:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 10:19:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 10:19:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 10:19:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-18 10:19:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 10:19:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:19:43,466 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-08-18 10:19:43,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436541609] [2020-08-18 10:19:43,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:19:43,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 10:19:43,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100984071] [2020-08-18 10:19:43,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 10:19:43,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:19:43,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 10:19:43,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 10:19:43,470 INFO L87 Difference]: Start difference. First operand 1154 states and 1489 transitions. Second operand 9 states. [2020-08-18 10:19:44,012 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 10:19:44,869 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-08-18 10:19:49,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:19:49,367 INFO L93 Difference]: Finished difference Result 3666 states and 5227 transitions. [2020-08-18 10:19:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-18 10:19:49,368 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 127 [2020-08-18 10:19:49,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:19:49,392 INFO L225 Difference]: With dead ends: 3666 [2020-08-18 10:19:49,392 INFO L226 Difference]: Without dead ends: 2553 [2020-08-18 10:19:49,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2020-08-18 10:19:49,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2020-08-18 10:19:50,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2184. [2020-08-18 10:19:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2184 states. [2020-08-18 10:19:50,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 2871 transitions. [2020-08-18 10:19:50,030 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 2871 transitions. Word has length 127 [2020-08-18 10:19:50,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:19:50,030 INFO L479 AbstractCegarLoop]: Abstraction has 2184 states and 2871 transitions. [2020-08-18 10:19:50,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 10:19:50,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 2871 transitions. [2020-08-18 10:19:50,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-18 10:19:50,044 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:19:50,044 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 10:19:50,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 10:19:50,045 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:19:50,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:19:50,045 INFO L82 PathProgramCache]: Analyzing trace with hash 355592246, now seen corresponding path program 1 times [2020-08-18 10:19:50,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:19:50,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219890775] [2020-08-18 10:19:50,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:19:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 10:19:50,135 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 10:19:50,136 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 10:19:50,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 10:19:50,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:19:50 BoogieIcfgContainer [2020-08-18 10:19:50,187 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 10:19:50,189 INFO L168 Benchmark]: Toolchain (without parser) took 50766.70 ms. Allocated memory was 147.3 MB in the beginning and 804.3 MB in the end (delta: 656.9 MB). Free memory was 102.3 MB in the beginning and 403.1 MB in the end (delta: -300.7 MB). Peak memory consumption was 356.2 MB. Max. memory is 7.1 GB. [2020-08-18 10:19:50,190 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 10:19:50,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 912.56 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 102.1 MB in the beginning and 167.0 MB in the end (delta: -64.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-08-18 10:19:50,201 INFO L168 Benchmark]: Boogie Preprocessor took 135.48 ms. Allocated memory is still 203.4 MB. Free memory was 167.0 MB in the beginning and 162.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-18 10:19:50,202 INFO L168 Benchmark]: RCFGBuilder took 1232.82 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 162.8 MB in the beginning and 183.0 MB in the end (delta: -20.1 MB). Peak memory consumption was 78.6 MB. Max. memory is 7.1 GB. [2020-08-18 10:19:50,203 INFO L168 Benchmark]: TraceAbstraction took 48479.80 ms. Allocated memory was 237.0 MB in the beginning and 804.3 MB in the end (delta: 567.3 MB). Free memory was 181.5 MB in the beginning and 403.1 MB in the end (delta: -221.6 MB). Peak memory consumption was 345.7 MB. Max. memory is 7.1 GB. [2020-08-18 10:19:50,211 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 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 912.56 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 102.1 MB in the beginning and 167.0 MB in the end (delta: -64.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.48 ms. Allocated memory is still 203.4 MB. Free memory was 167.0 MB in the beginning and 162.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1232.82 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 162.8 MB in the beginning and 183.0 MB in the end (delta: -20.1 MB). Peak memory consumption was 78.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48479.80 ms. Allocated memory was 237.0 MB in the beginning and 804.3 MB in the end (delta: 567.3 MB). Free memory was 181.5 MB in the beginning and 403.1 MB in the end (delta: -221.6 MB). Peak memory consumption was 345.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1021]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int __SELECTED_FEATURE_base ; [L41] int __SELECTED_FEATURE_highWaterSensor ; [L42] int __SELECTED_FEATURE_lowWaterSensor ; [L43] int __SELECTED_FEATURE_methaneQuery ; [L44] int __SELECTED_FEATURE_methaneAlarm ; [L45] int __SELECTED_FEATURE_stopCommand ; [L46] int __SELECTED_FEATURE_startCommand ; [L47] int __GUIDSL_ROOT_PRODUCTION ; [L140] int pumpRunning = 0; [L141] int systemActive = 1; [L641] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L914] int waterLevel = 1; [L915] int methaneLevelCritical = 0; [L1026] int cleanupTimeShifts = 4; [L1099] int retValue_acc ; [L1100] int tmp ; [L1104] CALL select_helpers() [L872] __GUIDSL_ROOT_PRODUCTION = 1 [L1104] RET select_helpers() [L1105] CALL select_features() [L857] __SELECTED_FEATURE_base = 1 [L858] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L858] RET, EXPR select_one() [L858] __SELECTED_FEATURE_highWaterSensor = select_one() [L859] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L859] RET, EXPR select_one() [L859] __SELECTED_FEATURE_lowWaterSensor = select_one() [L860] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L860] RET, EXPR select_one() [L860] __SELECTED_FEATURE_methaneQuery = select_one() [L861] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L861] RET, EXPR select_one() [L861] __SELECTED_FEATURE_methaneAlarm = select_one() [L862] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L862] RET, EXPR select_one() [L862] __SELECTED_FEATURE_stopCommand = select_one() [L863] CALL, EXPR select_one() [L843] int retValue_acc ; [L844] int choice = __VERIFIER_nondet_int(); [L847] retValue_acc = choice [L848] return (retValue_acc); [L863] RET, EXPR select_one() [L863] __SELECTED_FEATURE_startCommand = select_one() [L1105] RET select_features() [L1106] CALL, EXPR valid_product() [L877] int retValue_acc ; [L880] retValue_acc = __SELECTED_FEATURE_base [L881] return (retValue_acc); [L1106] RET, EXPR valid_product() [L1106] tmp = valid_product() [L1108] COND TRUE \read(tmp) [L1110] FCALL setup() [L1111] CALL runTest() [L1093] CALL test() [L55] int splverifierCounter ; [L56] int tmp ; [L57] int tmp___0 ; [L58] int tmp___1 ; [L59] int tmp___2 ; [L62] splverifierCounter = 0 [L64] COND TRUE 1 [L66] COND TRUE splverifierCounter < 4 [L72] tmp = __VERIFIER_nondet_int() [L74] COND TRUE \read(tmp) [L76] CALL waterRise() [L932] COND TRUE waterLevel < 2 [L933] waterLevel = waterLevel + 1 [L76] RET waterRise() [L82] tmp___0 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___0) [L86] CALL changeMethaneLevel() [L944] COND FALSE !(\read(methaneLevelCritical)) [L947] methaneLevelCritical = 1 [L86] RET changeMethaneLevel() [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND TRUE \read(tmp___2) [L95] COND FALSE !(\read(__SELECTED_FEATURE_startCommand)) [L119] CALL timeShift() [L148] COND FALSE !(\read(pumpRunning)) [L155] COND TRUE \read(systemActive) [L157] CALL processEnvironment() [L291] COND FALSE !(\read(__SELECTED_FEATURE_methaneAlarm)) [L298] CALL processEnvironment__before__methaneAlarm() [L248] COND FALSE !(\read(__SELECTED_FEATURE_lowWaterSensor)) [L255] CALL processEnvironment__before__lowWaterSensor() [L205] COND TRUE \read(__SELECTED_FEATURE_highWaterSensor) [L207] CALL processEnvironment__role__highWaterSensor() [L177] int tmp ; [L180] COND TRUE ! pumpRunning [L182] CALL, EXPR isHighWaterLevel() [L411] int retValue_acc ; [L412] int tmp ; [L413] int tmp___0 ; [L417] CALL, EXPR isHighWaterSensorDry() [L994] int retValue_acc ; [L997] COND FALSE !(waterLevel < 2) [L1001] retValue_acc = 0 [L1002] return (retValue_acc); [L417] RET, EXPR isHighWaterSensorDry() [L417] tmp = isHighWaterSensorDry() [L419] COND FALSE !(\read(tmp)) [L422] tmp___0 = 1 [L424] retValue_acc = tmp___0 [L425] return (retValue_acc); [L182] RET, EXPR isHighWaterLevel() [L182] tmp = isHighWaterLevel() [L184] COND TRUE \read(tmp) [L186] CALL activatePump() [L333] COND FALSE !(\read(__SELECTED_FEATURE_methaneQuery)) [L340] CALL activatePump__before__methaneQuery() [L308] pumpRunning = 1 [L340] RET activatePump__before__methaneQuery() [L186] RET activatePump() [L207] RET processEnvironment__role__highWaterSensor() [L255] RET processEnvironment__before__lowWaterSensor() [L298] RET processEnvironment__before__methaneAlarm() [L157] RET processEnvironment() [L163] CALL __utac_acc__Specification1_spec__1() [L888] int tmp ; [L889] int tmp___0 ; [L893] CALL, EXPR isMethaneLevelCritical() [L953] int retValue_acc ; [L956] retValue_acc = methaneLevelCritical [L957] return (retValue_acc); [L893] RET, EXPR isMethaneLevelCritical() [L893] tmp = isMethaneLevelCritical() [L895] COND TRUE \read(tmp) [L897] CALL, EXPR isPumpRunning() [L366] int retValue_acc ; [L369] retValue_acc = pumpRunning [L370] return (retValue_acc); [L897] RET, EXPR isPumpRunning() [L897] tmp___0 = isPumpRunning() [L899] COND TRUE \read(tmp___0) [L901] CALL __automaton_fail() [L1021] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 48 procedures, 298 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.3s, OverallIterations: 9, TraceHistogramMax: 6, AutomataDifference: 41.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1346 SDtfs, 5374 SDslu, 915 SDs, 0 SdLazy, 9538 SolverSat, 4221 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 450 GetRequests, 295 SyntacticMatches, 6 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 12.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2184occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 1494 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 937 NumberOfCodeBlocks, 937 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 798 ConstructedInterpolants, 0 QuantifiedInterpolants, 315242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 360/360 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...