/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:54:17,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:54:17,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:54:17,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:54:17,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:54:17,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:54:17,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:54:17,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:54:17,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:54:17,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:54:17,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:54:17,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:54:17,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:54:17,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:54:17,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:54:17,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:54:17,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:54:17,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:54:17,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:54:17,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:54:17,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:54:17,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:54:17,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:54:17,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:54:17,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:54:17,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:54:17,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:54:17,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:54:17,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:54:17,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:54:17,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:54:17,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:54:17,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:54:17,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:54:17,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:54:17,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:54:17,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:54:17,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:54:17,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:54:17,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:54:17,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:54:17,397 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 11:54:17,420 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:54:17,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:54:17,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:54:17,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:54:17,422 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:54:17,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:54:17,423 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:54:17,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:54:17,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:54:17,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:54:17,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:54:17,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:54:17,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:54:17,424 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:54:17,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:54:17,424 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:54:17,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:54:17,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:54:17,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:54:17,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:54:17,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:54:17,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:54:17,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:54:17,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:54:17,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:54:17,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:54:17,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:54:17,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:54:17,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:54:17,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 11:54:17,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:54:17,745 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:54:17,749 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:54:17,750 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:54:17,751 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:54:17,751 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-08-18 11:54:17,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71313ee1b/d0399ae07b924f83b266b16b0e847dd2/FLAG19139ea8b [2020-08-18 11:54:18,323 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:54:18,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-08-18 11:54:18,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71313ee1b/d0399ae07b924f83b266b16b0e847dd2/FLAG19139ea8b [2020-08-18 11:54:18,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71313ee1b/d0399ae07b924f83b266b16b0e847dd2 [2020-08-18 11:54:18,631 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:54:18,633 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:54:18,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:54:18,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:54:18,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:54:18,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:54:18" (1/1) ... [2020-08-18 11:54:18,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b37200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:18, skipping insertion in model container [2020-08-18 11:54:18,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:54:18" (1/1) ... [2020-08-18 11:54:18,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:54:18,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:54:19,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:54:19,070 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:54:19,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:54:19,291 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:54:19,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:19 WrapperNode [2020-08-18 11:54:19,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:54:19,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:54:19,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:54:19,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:54:19,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:19" (1/1) ... [2020-08-18 11:54:19,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:19" (1/1) ... [2020-08-18 11:54:19,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:19" (1/1) ... [2020-08-18 11:54:19,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:19" (1/1) ... [2020-08-18 11:54:19,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:19" (1/1) ... [2020-08-18 11:54:19,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:19" (1/1) ... [2020-08-18 11:54:19,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:19" (1/1) ... [2020-08-18 11:54:19,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:54:19,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:54:19,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:54:19,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:54:19,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:19" (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 11:54:19,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:54:19,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:54:19,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 11:54:19,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 11:54:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 11:54:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 11:54:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 11:54:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 11:54:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 11:54:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 11:54:19,458 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 11:54:19,459 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 11:54:19,459 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 11:54:19,459 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 11:54:19,459 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 11:54:19,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 11:54:19,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 11:54:19,460 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 11:54:19,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 11:54:19,460 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 11:54:19,460 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 11:54:19,460 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 11:54:19,460 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 11:54:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 11:54:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 11:54:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 11:54:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 11:54:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 11:54:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:54:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 11:54:19,462 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 11:54:19,462 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 11:54:19,462 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 11:54:19,462 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 11:54:19,462 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 11:54:19,462 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 11:54:19,462 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 11:54:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:54:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:54:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 11:54:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 11:54:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:54:19,463 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:54:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 11:54:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:54:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:54:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:54:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:54:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 11:54:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:54:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 11:54:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 11:54:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:54:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 11:54:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 11:54:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:54:19,465 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 11:54:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 11:54:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 11:54:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 11:54:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 11:54:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 11:54:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 11:54:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 11:54:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 11:54:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 11:54:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 11:54:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 11:54:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 11:54:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 11:54:19,467 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 11:54:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 11:54:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 11:54:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 11:54:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 11:54:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 11:54:19,468 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 11:54:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 11:54:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 11:54:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 11:54:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 11:54:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 11:54:19,469 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 11:54:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:54:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 11:54:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:54:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:54:19,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:54:20,609 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:54:20,609 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:54:20,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:54:20 BoogieIcfgContainer [2020-08-18 11:54:20,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:54:20,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:54:20,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:54:20,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:54:20,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:54:18" (1/3) ... [2020-08-18 11:54:20,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7745b4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:54:20, skipping insertion in model container [2020-08-18 11:54:20,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:54:19" (2/3) ... [2020-08-18 11:54:20,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7745b4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:54:20, skipping insertion in model container [2020-08-18 11:54:20,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:54:20" (3/3) ... [2020-08-18 11:54:20,623 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product33.cil.c [2020-08-18 11:54:20,634 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:54:20,643 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:54:20,658 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:54:20,684 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:54:20,684 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:54:20,684 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:54:20,685 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:54:20,685 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:54:20,685 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:54:20,686 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:54:20,686 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:54:20,709 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states. [2020-08-18 11:54:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 11:54:20,719 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:20,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:20,720 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:20,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:20,727 INFO L82 PathProgramCache]: Analyzing trace with hash 936709255, now seen corresponding path program 1 times [2020-08-18 11:54:20,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:20,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040076992] [2020-08-18 11:54:20,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:21,469 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:21,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:21,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:21,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:21,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:21,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:21,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:54:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:21,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:54:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:54:21,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040076992] [2020-08-18 11:54:21,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:21,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 11:54:21,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317287481] [2020-08-18 11:54:21,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 11:54:21,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:21,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 11:54:21,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:54:21,575 INFO L87 Difference]: Start difference. First operand 151 states. Second operand 3 states. [2020-08-18 11:54:22,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:22,643 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-08-18 11:54:22,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 11:54:22,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 11:54:22,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:22,659 INFO L225 Difference]: With dead ends: 249 [2020-08-18 11:54:22,659 INFO L226 Difference]: Without dead ends: 135 [2020-08-18 11:54:22,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:54:22,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-18 11:54:22,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-18 11:54:22,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-18 11:54:22,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-08-18 11:54:22,767 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 46 [2020-08-18 11:54:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:22,768 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-08-18 11:54:22,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 11:54:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-08-18 11:54:22,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 11:54:22,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:22,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:22,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:54:22,775 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:22,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:22,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1814743517, now seen corresponding path program 1 times [2020-08-18 11:54:22,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:22,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645748030] [2020-08-18 11:54:22,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:23,147 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:23,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:23,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:23,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:23,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:23,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:23,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:23,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:54:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:23,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:54:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:23,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:54:23,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645748030] [2020-08-18 11:54:23,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:23,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:54:23,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407266817] [2020-08-18 11:54:23,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:54:23,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:23,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:54:23,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:54:23,195 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-08-18 11:54:23,598 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:24,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:24,173 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-08-18 11:54:24,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:54:24,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 11:54:24,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:24,177 INFO L225 Difference]: With dead ends: 182 [2020-08-18 11:54:24,177 INFO L226 Difference]: Without dead ends: 119 [2020-08-18 11:54:24,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:54:24,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-18 11:54:24,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-18 11:54:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-18 11:54:24,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-18 11:54:24,215 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 47 [2020-08-18 11:54:24,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:24,215 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-18 11:54:24,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:54:24,215 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-18 11:54:24,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 11:54:24,217 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:24,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:24,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:54:24,218 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:24,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:24,219 INFO L82 PathProgramCache]: Analyzing trace with hash 268149636, now seen corresponding path program 1 times [2020-08-18 11:54:24,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:24,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098264158] [2020-08-18 11:54:24,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,560 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:24,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 11:54:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 11:54:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:24,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:54:24,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098264158] [2020-08-18 11:54:24,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:24,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:54:24,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648766966] [2020-08-18 11:54:24,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:54:24,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:24,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:54:24,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:54:24,665 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2020-08-18 11:54:24,988 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:25,327 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:25,559 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:25,793 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:26,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:26,713 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-08-18 11:54:26,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:54:26,716 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-18 11:54:26,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:26,718 INFO L225 Difference]: With dead ends: 191 [2020-08-18 11:54:26,718 INFO L226 Difference]: Without dead ends: 119 [2020-08-18 11:54:26,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:54:26,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-18 11:54:26,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-18 11:54:26,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-18 11:54:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-18 11:54:26,749 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 51 [2020-08-18 11:54:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:26,750 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-18 11:54:26,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:54:26,750 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-18 11:54:26,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 11:54:26,752 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:26,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:26,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:54:26,753 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:26,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:26,753 INFO L82 PathProgramCache]: Analyzing trace with hash -169231603, now seen corresponding path program 1 times [2020-08-18 11:54:26,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:26,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547230278] [2020-08-18 11:54:26,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:27,016 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:27,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:27,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:27,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:27,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:27,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:27,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 11:54:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:27,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:27,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 11:54:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:27,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 11:54:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:54:27,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547230278] [2020-08-18 11:54:27,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:27,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:54:27,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701181618] [2020-08-18 11:54:27,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:54:27,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:27,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:54:27,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:54:27,121 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 6 states. [2020-08-18 11:54:27,409 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:28,450 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:28,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:28,878 INFO L93 Difference]: Finished difference Result 274 states and 340 transitions. [2020-08-18 11:54:28,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 11:54:28,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-18 11:54:28,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:28,883 INFO L225 Difference]: With dead ends: 274 [2020-08-18 11:54:28,883 INFO L226 Difference]: Without dead ends: 202 [2020-08-18 11:54:28,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 11:54:28,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-18 11:54:28,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 161. [2020-08-18 11:54:28,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-08-18 11:54:28,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2020-08-18 11:54:28,938 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 59 [2020-08-18 11:54:28,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:28,938 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2020-08-18 11:54:28,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:54:28,939 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2020-08-18 11:54:28,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-18 11:54:28,941 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:28,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:28,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:54:28,942 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:28,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:28,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1300839735, now seen corresponding path program 1 times [2020-08-18 11:54:28,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:28,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905162368] [2020-08-18 11:54:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,262 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:29,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 11:54:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 11:54:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 11:54:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:29,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:54:29,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905162368] [2020-08-18 11:54:29,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:29,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:54:29,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719232497] [2020-08-18 11:54:29,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:54:29,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:29,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:54:29,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:54:29,351 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand 8 states. [2020-08-18 11:54:29,651 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:30,621 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:30,896 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:31,131 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:31,363 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:31,664 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:32,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:32,400 INFO L93 Difference]: Finished difference Result 478 states and 600 transitions. [2020-08-18 11:54:32,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:54:32,403 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-08-18 11:54:32,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:32,406 INFO L225 Difference]: With dead ends: 478 [2020-08-18 11:54:32,407 INFO L226 Difference]: Without dead ends: 341 [2020-08-18 11:54:32,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 11:54:32,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-08-18 11:54:32,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 277. [2020-08-18 11:54:32,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-08-18 11:54:32,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 320 transitions. [2020-08-18 11:54:32,478 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 320 transitions. Word has length 73 [2020-08-18 11:54:32,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:32,478 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 320 transitions. [2020-08-18 11:54:32,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:54:32,478 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 320 transitions. [2020-08-18 11:54:32,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-18 11:54:32,480 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:32,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:32,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:54:32,481 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:32,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:32,481 INFO L82 PathProgramCache]: Analyzing trace with hash 2135215483, now seen corresponding path program 1 times [2020-08-18 11:54:32,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:32,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776169187] [2020-08-18 11:54:32,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:32,744 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:32,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:32,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:32,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:32,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:32,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:32,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:54:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:32,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:54:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:32,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:32,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:32,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:32,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 11:54:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:32,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-18 11:54:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:54:32,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776169187] [2020-08-18 11:54:32,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:32,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:54:32,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13885055] [2020-08-18 11:54:32,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:54:32,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:32,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:54:32,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:54:32,878 INFO L87 Difference]: Start difference. First operand 277 states and 320 transitions. Second operand 9 states. [2020-08-18 11:54:33,211 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:34,229 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:34,462 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:34,745 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:35,007 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:35,265 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:36,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:36,040 INFO L93 Difference]: Finished difference Result 380 states and 484 transitions. [2020-08-18 11:54:36,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 11:54:36,040 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-18 11:54:36,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:36,044 INFO L225 Difference]: With dead ends: 380 [2020-08-18 11:54:36,045 INFO L226 Difference]: Without dead ends: 377 [2020-08-18 11:54:36,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 11:54:36,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-08-18 11:54:36,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 277. [2020-08-18 11:54:36,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-08-18 11:54:36,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 319 transitions. [2020-08-18 11:54:36,100 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 319 transitions. Word has length 77 [2020-08-18 11:54:36,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:36,100 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 319 transitions. [2020-08-18 11:54:36,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:54:36,100 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 319 transitions. [2020-08-18 11:54:36,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 11:54:36,102 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:36,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:36,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:54:36,103 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:36,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:36,103 INFO L82 PathProgramCache]: Analyzing trace with hash 2125508241, now seen corresponding path program 1 times [2020-08-18 11:54:36,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:36,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800578792] [2020-08-18 11:54:36,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:36,329 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:36,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:36,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:36,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:36,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:36,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:36,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:54:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:36,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:54:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:36,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:36,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:36,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:36,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 11:54:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:36,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 11:54:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:54:36,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800578792] [2020-08-18 11:54:36,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:36,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:54:36,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912143604] [2020-08-18 11:54:36,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:54:36,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:36,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:54:36,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:54:36,499 INFO L87 Difference]: Start difference. First operand 277 states and 319 transitions. Second operand 9 states. [2020-08-18 11:54:37,270 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:54:37,525 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:54:37,751 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:37,972 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:38,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:38,744 INFO L93 Difference]: Finished difference Result 634 states and 793 transitions. [2020-08-18 11:54:38,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 11:54:38,745 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-18 11:54:38,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:38,749 INFO L225 Difference]: With dead ends: 634 [2020-08-18 11:54:38,749 INFO L226 Difference]: Without dead ends: 381 [2020-08-18 11:54:38,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:54:38,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-08-18 11:54:38,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 287. [2020-08-18 11:54:38,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-08-18 11:54:38,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 329 transitions. [2020-08-18 11:54:38,810 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 329 transitions. Word has length 78 [2020-08-18 11:54:38,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:38,811 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 329 transitions. [2020-08-18 11:54:38,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:54:38,811 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 329 transitions. [2020-08-18 11:54:38,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 11:54:38,813 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:38,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:38,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 11:54:38,813 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:38,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:38,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1616035151, now seen corresponding path program 1 times [2020-08-18 11:54:38,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:38,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973531021] [2020-08-18 11:54:38,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:39,070 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:39,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:39,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:39,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:39,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:39,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:39,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:54:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:39,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:54:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:39,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:39,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:39,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:39,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 11:54:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:39,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 11:54:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:54:39,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973531021] [2020-08-18 11:54:39,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:39,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 11:54:39,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849164513] [2020-08-18 11:54:39,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 11:54:39,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:39,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 11:54:39,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:54:39,188 INFO L87 Difference]: Start difference. First operand 287 states and 329 transitions. Second operand 11 states. [2020-08-18 11:54:39,618 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:39,854 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:40,063 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:40,593 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:40,827 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:41,052 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:54:41,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:41,926 INFO L93 Difference]: Finished difference Result 658 states and 831 transitions. [2020-08-18 11:54:41,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:54:41,927 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-08-18 11:54:41,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:41,930 INFO L225 Difference]: With dead ends: 658 [2020-08-18 11:54:41,930 INFO L226 Difference]: Without dead ends: 395 [2020-08-18 11:54:41,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 11:54:41,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-08-18 11:54:41,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 295. [2020-08-18 11:54:41,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-18 11:54:41,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 337 transitions. [2020-08-18 11:54:41,988 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 337 transitions. Word has length 78 [2020-08-18 11:54:41,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:41,988 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 337 transitions. [2020-08-18 11:54:41,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 11:54:41,988 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 337 transitions. [2020-08-18 11:54:41,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-18 11:54:41,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:41,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:41,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 11:54:41,990 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:41,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:41,991 INFO L82 PathProgramCache]: Analyzing trace with hash -394068690, now seen corresponding path program 1 times [2020-08-18 11:54:41,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:41,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689439762] [2020-08-18 11:54:41,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:42,253 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:54:42,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:54:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:42,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:54:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:42,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:54:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:42,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:54:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:42,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:54:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:42,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:54:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:42,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:54:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:42,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:54:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:42,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:54:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:42,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:54:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:42,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-18 11:54:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:42,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 11:54:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:54:42,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:54:42,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689439762] [2020-08-18 11:54:42,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:54:42,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 11:54:42,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290830085] [2020-08-18 11:54:42,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 11:54:42,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:54:42,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 11:54:42,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:54:42,370 INFO L87 Difference]: Start difference. First operand 295 states and 337 transitions. Second operand 7 states. [2020-08-18 11:54:42,695 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:43,220 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:54:44,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:54:44,859 INFO L93 Difference]: Finished difference Result 941 states and 1221 transitions. [2020-08-18 11:54:44,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 11:54:44,860 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-18 11:54:44,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:54:44,865 INFO L225 Difference]: With dead ends: 941 [2020-08-18 11:54:44,866 INFO L226 Difference]: Without dead ends: 670 [2020-08-18 11:54:44,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:54:44,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-18 11:54:44,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 571. [2020-08-18 11:54:44,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-08-18 11:54:44,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 679 transitions. [2020-08-18 11:54:44,996 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 679 transitions. Word has length 78 [2020-08-18 11:54:44,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:54:44,996 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 679 transitions. [2020-08-18 11:54:44,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 11:54:44,997 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 679 transitions. [2020-08-18 11:54:44,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 11:54:44,999 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:54:44,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:54:44,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 11:54:44,999 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:54:45,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:54:45,000 INFO L82 PathProgramCache]: Analyzing trace with hash 823271752, now seen corresponding path program 1 times [2020-08-18 11:54:45,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:54:45,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863049480] [2020-08-18 11:54:45,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:54:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 11:54:45,062 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 11:54:45,062 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 11:54:45,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 11:54:45,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:54:45 BoogieIcfgContainer [2020-08-18 11:54:45,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 11:54:45,092 INFO L168 Benchmark]: Toolchain (without parser) took 26458.96 ms. Allocated memory was 137.9 MB in the beginning and 631.8 MB in the end (delta: 493.9 MB). Free memory was 100.6 MB in the beginning and 199.5 MB in the end (delta: -98.8 MB). Peak memory consumption was 395.0 MB. Max. memory is 7.1 GB. [2020-08-18 11:54:45,092 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-08-18 11:54:45,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 655.57 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 100.2 MB in the beginning and 170.0 MB in the end (delta: -69.8 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2020-08-18 11:54:45,094 INFO L168 Benchmark]: Boogie Preprocessor took 99.16 ms. Allocated memory is still 201.3 MB. Free memory was 170.0 MB in the beginning and 165.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-18 11:54:45,095 INFO L168 Benchmark]: RCFGBuilder took 1222.73 ms. Allocated memory was 201.3 MB in the beginning and 230.7 MB in the end (delta: 29.4 MB). Free memory was 165.8 MB in the beginning and 197.7 MB in the end (delta: -31.9 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. [2020-08-18 11:54:45,095 INFO L168 Benchmark]: TraceAbstraction took 24473.81 ms. Allocated memory was 230.7 MB in the beginning and 631.8 MB in the end (delta: 401.1 MB). Free memory was 197.7 MB in the beginning and 199.5 MB in the end (delta: -1.8 MB). Peak memory consumption was 399.3 MB. Max. memory is 7.1 GB. [2020-08-18 11:54:45,098 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 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 655.57 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 100.2 MB in the beginning and 170.0 MB in the end (delta: -69.8 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.16 ms. Allocated memory is still 201.3 MB. Free memory was 170.0 MB in the beginning and 165.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1222.73 ms. Allocated memory was 201.3 MB in the beginning and 230.7 MB in the end (delta: 29.4 MB). Free memory was 165.8 MB in the beginning and 197.7 MB in the end (delta: -31.9 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24473.81 ms. Allocated memory was 230.7 MB in the beginning and 631.8 MB in the end (delta: 401.1 MB). Free memory was 197.7 MB in the beginning and 199.5 MB in the end (delta: -1.8 MB). Peak memory consumption was 399.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 410]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L424] int pumpRunning = 0; [L425] int systemActive = 1; [L683] int cleanupTimeShifts = 4; [L806] int waterLevel = 1; [L807] int methaneLevelCritical = 0; [L756] int retValue_acc ; [L757] int tmp ; [L761] FCALL select_helpers() [L762] FCALL select_features() [L763] CALL, EXPR valid_product() [L674] int retValue_acc ; [L677] retValue_acc = 1 [L678] return (retValue_acc); [L763] RET, EXPR valid_product() [L763] tmp = valid_product() [L765] COND TRUE \read(tmp) [L767] FCALL setup() [L768] CALL runTest() [L750] CALL test() [L581] int splverifierCounter ; [L582] int tmp ; [L583] int tmp___0 ; [L584] int tmp___1 ; [L585] int tmp___2 ; [L588] splverifierCounter = 0 [L590] COND TRUE 1 [L592] COND TRUE splverifierCounter < 4 [L598] tmp = __VERIFIER_nondet_int() [L600] COND TRUE \read(tmp) [L602] CALL waterRise() [L824] COND TRUE waterLevel < 2 [L825] waterLevel = waterLevel + 1 [L602] RET waterRise() [L608] tmp___0 = __VERIFIER_nondet_int() [L610] COND TRUE \read(tmp___0) [L612] CALL changeMethaneLevel() [L836] COND FALSE !(\read(methaneLevelCritical)) [L839] methaneLevelCritical = 1 [L612] RET changeMethaneLevel() [L618] tmp___2 = __VERIFIER_nondet_int() [L620] COND TRUE \read(tmp___2) [L633] CALL timeShift() [L432] COND FALSE !(\read(pumpRunning)) [L439] COND TRUE \read(systemActive) [L441] CALL processEnvironment() [L461] int tmp ; [L464] COND TRUE ! pumpRunning [L466] CALL, EXPR isHighWaterLevel() [L558] int retValue_acc ; [L559] int tmp ; [L560] int tmp___0 ; [L564] CALL, EXPR isHighWaterSensorDry() [L886] int retValue_acc ; [L889] COND FALSE !(waterLevel < 2) [L893] retValue_acc = 0 [L894] return (retValue_acc); [L564] RET, EXPR isHighWaterSensorDry() [L564] tmp = isHighWaterSensorDry() [L566] COND FALSE !(\read(tmp)) [L569] tmp___0 = 1 [L571] retValue_acc = tmp___0 [L572] return (retValue_acc); [L466] RET, EXPR isHighWaterLevel() [L466] tmp = isHighWaterLevel() [L468] COND TRUE \read(tmp) [L470] CALL activatePump() [L489] pumpRunning = 1 [L470] RET activatePump() [L441] RET processEnvironment() [L447] CALL __utac_acc__Specification1_spec__1() [L780] int tmp ; [L781] int tmp___0 ; [L785] CALL, EXPR isMethaneLevelCritical() [L845] int retValue_acc ; [L848] retValue_acc = methaneLevelCritical [L849] return (retValue_acc); [L785] RET, EXPR isMethaneLevelCritical() [L785] tmp = isMethaneLevelCritical() [L787] COND TRUE \read(tmp) [L789] CALL, EXPR isPumpRunning() [L513] int retValue_acc ; [L516] retValue_acc = pumpRunning [L517] return (retValue_acc); [L789] RET, EXPR isPumpRunning() [L789] tmp___0 = isPumpRunning() [L791] COND TRUE \read(tmp___0) [L793] CALL __automaton_fail() [L410] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 19.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 856 SDtfs, 1520 SDslu, 836 SDs, 0 SdLazy, 3994 SolverSat, 919 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 297 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=571occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 574 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 669 NumberOfCodeBlocks, 669 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 578 ConstructedInterpolants, 0 QuantifiedInterpolants, 173318 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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...