/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:37:41,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:37:41,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:37:41,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:37:41,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:37:41,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:37:41,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:37:41,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:37:41,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:37:41,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:37:41,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:37:41,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:37:41,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:37:41,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:37:41,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:37:41,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:37:41,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:37:41,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:37:41,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:37:41,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:37:41,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:37:41,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:37:41,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:37:41,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:37:41,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:37:41,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:37:41,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:37:41,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:37:41,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:37:41,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:37:41,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:37:41,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:37:41,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:37:41,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:37:41,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:37:41,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:37:41,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:37:41,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:37:41,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:37:41,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:37:41,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:37:41,419 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 [2020-08-21 23:37:41,441 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:37:41,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:37:41,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:37:41,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:37:41,443 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:37:41,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:37:41,443 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:37:41,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:37:41,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:37:41,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:37:41,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:37:41,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:37:41,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:37:41,445 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:37:41,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:37:41,445 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:37:41,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:37:41,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:37:41,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:37:41,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:37:41,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:37:41,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:37:41,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:37:41,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:37:41,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:37:41,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:37:41,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:37:41,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:37:41,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:37:41,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:37:41,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:37:41,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:37:41,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:37:41,778 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:37:41,778 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:37:41,779 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product32.cil.c [2020-08-21 23:37:41,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4261b8057/75b4ea2544964f0c85b895118c73887b/FLAG55a424ad6 [2020-08-21 23:37:42,378 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:37:42,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product32.cil.c [2020-08-21 23:37:42,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4261b8057/75b4ea2544964f0c85b895118c73887b/FLAG55a424ad6 [2020-08-21 23:37:42,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4261b8057/75b4ea2544964f0c85b895118c73887b [2020-08-21 23:37:42,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:37:42,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:37:42,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:37:42,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:37:42,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:37:42,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:37:42" (1/1) ... [2020-08-21 23:37:42,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217e3fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:42, skipping insertion in model container [2020-08-21 23:37:42,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:37:42" (1/1) ... [2020-08-21 23:37:42,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:37:42,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:37:43,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:37:43,112 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:37:43,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:37:43,339 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:37:43,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:43 WrapperNode [2020-08-21 23:37:43,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:37:43,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:37:43,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:37:43,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:37:43,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:43" (1/1) ... [2020-08-21 23:37:43,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:43" (1/1) ... [2020-08-21 23:37:43,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:43" (1/1) ... [2020-08-21 23:37:43,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:43" (1/1) ... [2020-08-21 23:37:43,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:43" (1/1) ... [2020-08-21 23:37:43,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:43" (1/1) ... [2020-08-21 23:37:43,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:43" (1/1) ... [2020-08-21 23:37:43,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:37:43,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:37:43,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:37:43,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:37:43,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:43" (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 [2020-08-21 23:37:43,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:37:43,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:37:43,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 23:37:43,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 23:37:43,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 23:37:43,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 23:37:43,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 23:37:43,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 23:37:43,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 23:37:43,547 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 23:37:43,547 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 23:37:43,547 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 23:37:43,548 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 23:37:43,548 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 23:37:43,549 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 23:37:43,549 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 23:37:43,549 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 23:37:43,550 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 23:37:43,550 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 23:37:43,550 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 23:37:43,551 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 23:37:43,551 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 23:37:43,551 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 23:37:43,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 23:37:43,551 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 23:37:43,552 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 23:37:43,552 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 23:37:43,554 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 23:37:43,555 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:37:43,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 23:37:43,555 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 23:37:43,555 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 23:37:43,555 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 23:37:43,555 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 23:37:43,556 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 23:37:43,556 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 23:37:43,556 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 23:37:43,556 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 23:37:43,556 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 23:37:43,556 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 23:37:43,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 23:37:43,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:37:43,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:37:43,557 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 23:37:43,557 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 23:37:43,558 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:37:43,558 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 23:37:43,558 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 23:37:43,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:37:43,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 23:37:43,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:37:43,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 23:37:43,559 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 23:37:43,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:37:43,559 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 23:37:43,560 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 23:37:43,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:37:43,560 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 23:37:43,560 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 23:37:43,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:37:43,561 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 23:37:43,561 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 23:37:43,561 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 23:37:43,561 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 23:37:43,561 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 23:37:43,561 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 23:37:43,561 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 23:37:43,562 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 23:37:43,562 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 23:37:43,562 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 23:37:43,562 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 23:37:43,563 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 23:37:43,564 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 23:37:43,564 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 23:37:43,564 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 23:37:43,565 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 23:37:43,565 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 23:37:43,565 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 23:37:43,565 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 23:37:43,565 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 23:37:43,566 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 23:37:43,566 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 23:37:43,567 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 23:37:43,567 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 23:37:43,567 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 23:37:43,567 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 23:37:43,567 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 23:37:43,567 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 23:37:43,568 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 23:37:43,568 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 23:37:43,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:37:43,568 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 23:37:43,568 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 23:37:43,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:37:43,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 23:37:43,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:37:44,677 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:37:44,677 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 23:37:44,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:37:44 BoogieIcfgContainer [2020-08-21 23:37:44,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:37:44,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:37:44,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:37:44,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:37:44,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:37:42" (1/3) ... [2020-08-21 23:37:44,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc52c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:37:44, skipping insertion in model container [2020-08-21 23:37:44,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:37:43" (2/3) ... [2020-08-21 23:37:44,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc52c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:37:44, skipping insertion in model container [2020-08-21 23:37:44,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:37:44" (3/3) ... [2020-08-21 23:37:44,691 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product32.cil.c [2020-08-21 23:37:44,701 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:37:44,710 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:37:44,724 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:37:44,748 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:37:44,749 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:37:44,749 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:37:44,749 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:37:44,749 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:37:44,750 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:37:44,750 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:37:44,750 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:37:44,772 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-08-21 23:37:44,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 23:37:44,784 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:44,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:37:44,785 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:44,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:44,792 INFO L82 PathProgramCache]: Analyzing trace with hash 628645976, now seen corresponding path program 1 times [2020-08-21 23:37:44,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:44,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631264321] [2020-08-21 23:37:44,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:45,472 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:37:45,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:45,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:45,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:45,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:45,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:45,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:37:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:45,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:37:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:45,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:37:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:45,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:37:45,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631264321] [2020-08-21 23:37:45,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:45,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:37:45,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075278431] [2020-08-21 23:37:45,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:37:45,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:45,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:37:45,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:37:45,601 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2020-08-21 23:37:46,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:46,840 INFO L93 Difference]: Finished difference Result 314 states and 413 transitions. [2020-08-21 23:37:46,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:37:46,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 23:37:46,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:46,858 INFO L225 Difference]: With dead ends: 314 [2020-08-21 23:37:46,858 INFO L226 Difference]: Without dead ends: 170 [2020-08-21 23:37:46,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:37:46,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-21 23:37:46,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 135. [2020-08-21 23:37:46,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-08-21 23:37:46,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2020-08-21 23:37:46,976 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 52 [2020-08-21 23:37:46,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:46,977 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2020-08-21 23:37:46,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:37:46,977 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2020-08-21 23:37:46,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 23:37:46,981 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:46,982 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] [2020-08-21 23:37:46,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:37:46,982 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:46,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:46,983 INFO L82 PathProgramCache]: Analyzing trace with hash 364620848, now seen corresponding path program 1 times [2020-08-21 23:37:46,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:46,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952881662] [2020-08-21 23:37:46,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:47,280 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:37:47,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:47,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:47,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:47,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:47,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:47,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 23:37:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:47,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 23:37:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:47,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 23:37:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:47,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:37:47,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952881662] [2020-08-21 23:37:47,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:47,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:37:47,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230041617] [2020-08-21 23:37:47,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:37:47,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:47,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:37:47,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:37:47,334 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand 4 states. [2020-08-21 23:37:47,778 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:37:48,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:48,706 INFO L93 Difference]: Finished difference Result 237 states and 292 transitions. [2020-08-21 23:37:48,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 23:37:48,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 23:37:48,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:48,713 INFO L225 Difference]: With dead ends: 237 [2020-08-21 23:37:48,713 INFO L226 Difference]: Without dead ends: 154 [2020-08-21 23:37:48,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:37:48,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-21 23:37:48,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 126. [2020-08-21 23:37:48,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-08-21 23:37:48,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 148 transitions. [2020-08-21 23:37:48,756 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 148 transitions. Word has length 53 [2020-08-21 23:37:48,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:48,757 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 148 transitions. [2020-08-21 23:37:48,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:37:48,757 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 148 transitions. [2020-08-21 23:37:48,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 23:37:48,760 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:48,760 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] [2020-08-21 23:37:48,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:37:48,760 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:48,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:48,761 INFO L82 PathProgramCache]: Analyzing trace with hash -840364754, now seen corresponding path program 1 times [2020-08-21 23:37:48,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:48,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052041361] [2020-08-21 23:37:48,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:49,095 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:37:49,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:49,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:49,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:49,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:49,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:49,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:37:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:49,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:37:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:49,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 23:37:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:49,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:37:49,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052041361] [2020-08-21 23:37:49,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:49,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:37:49,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769855253] [2020-08-21 23:37:49,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:37:49,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:49,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:37:49,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:37:49,192 INFO L87 Difference]: Start difference. First operand 126 states and 148 transitions. Second operand 8 states. [2020-08-21 23:37:49,545 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:37:49,858 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:37:50,144 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:37:50,387 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:37:51,139 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:37:53,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:53,104 INFO L93 Difference]: Finished difference Result 439 states and 548 transitions. [2020-08-21 23:37:53,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 23:37:53,105 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-21 23:37:53,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:53,115 INFO L225 Difference]: With dead ends: 439 [2020-08-21 23:37:53,116 INFO L226 Difference]: Without dead ends: 337 [2020-08-21 23:37:53,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 23:37:53,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-08-21 23:37:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 272. [2020-08-21 23:37:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-08-21 23:37:53,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 331 transitions. [2020-08-21 23:37:53,217 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 331 transitions. Word has length 58 [2020-08-21 23:37:53,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:53,217 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 331 transitions. [2020-08-21 23:37:53,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:37:53,218 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 331 transitions. [2020-08-21 23:37:53,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-21 23:37:53,221 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:53,222 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] [2020-08-21 23:37:53,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:37:53,222 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:53,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:53,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1271614513, now seen corresponding path program 1 times [2020-08-21 23:37:53,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:53,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348643077] [2020-08-21 23:37:53,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:53,544 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 23:37:53,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:37:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:53,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:37:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:53,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:37:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:53,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:37:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:53,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:37:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:53,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 23:37:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:53,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 23:37:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:53,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 23:37:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:53,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 23:37:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:37:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:37:53,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348643077] [2020-08-21 23:37:53,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:37:53,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 23:37:53,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681748559] [2020-08-21 23:37:53,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 23:37:53,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:37:53,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 23:37:53,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:37:53,695 INFO L87 Difference]: Start difference. First operand 272 states and 331 transitions. Second operand 8 states. [2020-08-21 23:37:54,028 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:37:55,386 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:37:55,766 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:37:56,054 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 23:37:56,321 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 23:37:57,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:37:57,100 INFO L93 Difference]: Finished difference Result 839 states and 1103 transitions. [2020-08-21 23:37:57,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 23:37:57,100 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-21 23:37:57,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:37:57,107 INFO L225 Difference]: With dead ends: 839 [2020-08-21 23:37:57,107 INFO L226 Difference]: Without dead ends: 591 [2020-08-21 23:37:57,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:37:57,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-08-21 23:37:57,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 521. [2020-08-21 23:37:57,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-08-21 23:37:57,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 649 transitions. [2020-08-21 23:37:57,218 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 649 transitions. Word has length 63 [2020-08-21 23:37:57,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:37:57,218 INFO L479 AbstractCegarLoop]: Abstraction has 521 states and 649 transitions. [2020-08-21 23:37:57,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 23:37:57,219 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 649 transitions. [2020-08-21 23:37:57,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-21 23:37:57,225 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:37:57,225 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] [2020-08-21 23:37:57,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:37:57,225 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:37:57,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:37:57,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1708991285, now seen corresponding path program 1 times [2020-08-21 23:37:57,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:37:57,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28688679] [2020-08-21 23:37:57,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:37:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 23:37:57,284 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 23:37:57,284 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 23:37:57,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:37:57,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:37:57 BoogieIcfgContainer [2020-08-21 23:37:57,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:37:57,310 INFO L168 Benchmark]: Toolchain (without parser) took 14601.00 ms. Allocated memory was 142.1 MB in the beginning and 453.0 MB in the end (delta: 310.9 MB). Free memory was 103.9 MB in the beginning and 271.4 MB in the end (delta: -167.5 MB). Peak memory consumption was 143.4 MB. Max. memory is 7.1 GB. [2020-08-21 23:37:57,311 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 23:37:57,312 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.53 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 103.7 MB in the beginning and 174.5 MB in the end (delta: -70.8 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2020-08-21 23:37:57,313 INFO L168 Benchmark]: Boogie Preprocessor took 114.38 ms. Allocated memory is still 205.0 MB. Free memory was 174.5 MB in the beginning and 170.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 23:37:57,314 INFO L168 Benchmark]: RCFGBuilder took 1227.66 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 170.5 MB in the beginning and 190.1 MB in the end (delta: -19.6 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. [2020-08-21 23:37:57,315 INFO L168 Benchmark]: TraceAbstraction took 12624.56 ms. Allocated memory was 234.4 MB in the beginning and 453.0 MB in the end (delta: 218.6 MB). Free memory was 190.1 MB in the beginning and 271.4 MB in the end (delta: -81.3 MB). Peak memory consumption was 137.3 MB. Max. memory is 7.1 GB. [2020-08-21 23:37:57,319 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 629.53 ms. Allocated memory was 142.1 MB in the beginning and 205.0 MB in the end (delta: 62.9 MB). Free memory was 103.7 MB in the beginning and 174.5 MB in the end (delta: -70.8 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.38 ms. Allocated memory is still 205.0 MB. Free memory was 174.5 MB in the beginning and 170.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1227.66 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 170.5 MB in the beginning and 190.1 MB in the end (delta: -19.6 MB). Peak memory consumption was 81.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12624.56 ms. Allocated memory was 234.4 MB in the beginning and 453.0 MB in the end (delta: 218.6 MB). Free memory was 190.1 MB in the beginning and 271.4 MB in the end (delta: -81.3 MB). Peak memory consumption was 137.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 712]: 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; [L489] int pumpRunning = 0; [L490] int systemActive = 1; [L717] int cleanupTimeShifts = 4; [L886] int waterLevel = 1; [L887] int methaneLevelCritical = 0; [L793] int retValue_acc ; [L794] int tmp ; [L798] FCALL select_helpers() [L799] FCALL select_features() [L800] CALL, EXPR valid_product() [L877] int retValue_acc ; [L880] retValue_acc = 1 [L881] return (retValue_acc); [L800] RET, EXPR valid_product() [L800] tmp = valid_product() [L802] COND TRUE \read(tmp) [L804] FCALL setup() [L805] CALL runTest() [L784] CALL test() [L413] int splverifierCounter ; [L414] int tmp ; [L415] int tmp___0 ; [L416] int tmp___1 ; [L417] int tmp___2 ; [L420] splverifierCounter = 0 [L422] COND TRUE 1 [L424] COND TRUE splverifierCounter < 4 [L430] tmp = __VERIFIER_nondet_int() [L432] COND TRUE \read(tmp) [L434] CALL waterRise() [L904] COND TRUE waterLevel < 2 [L905] waterLevel = waterLevel + 1 [L434] RET waterRise() [L440] tmp___0 = __VERIFIER_nondet_int() [L442] COND FALSE !(\read(tmp___0)) [L450] tmp___2 = __VERIFIER_nondet_int() [L452] COND FALSE !(\read(tmp___2)) [L458] tmp___1 = __VERIFIER_nondet_int() [L460] COND TRUE \read(tmp___1) [L462] CALL stopSystem() [L688] COND FALSE !(\read(pumpRunning)) [L695] systemActive = 0 [L462] RET stopSystem() [L469] CALL timeShift() [L497] COND FALSE !(\read(pumpRunning)) [L504] COND FALSE !(\read(systemActive)) [L512] CALL __utac_acc__Specification3_spec__1() [L818] int tmp ; [L819] int tmp___0 ; [L820] int tmp___1 ; [L824] CALL, EXPR isMethaneLevelCritical() [L925] int retValue_acc ; [L928] retValue_acc = methaneLevelCritical [L929] return (retValue_acc); [L824] RET, EXPR isMethaneLevelCritical() [L824] tmp = isMethaneLevelCritical() [L826] COND FALSE !(\read(tmp)) [L830] CALL, EXPR getWaterLevel() [L957] int retValue_acc ; [L960] retValue_acc = waterLevel [L961] return (retValue_acc); [L830] RET, EXPR getWaterLevel() [L830] tmp___0 = getWaterLevel() [L832] COND TRUE tmp___0 == 2 [L834] CALL, EXPR isPumpRunning() [L621] int retValue_acc ; [L624] retValue_acc = pumpRunning [L625] return (retValue_acc); [L834] RET, EXPR isPumpRunning() [L834] tmp___1 = isPumpRunning() [L836] COND FALSE !(\read(tmp___1)) [L840] CALL __automaton_fail() [L712] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 244 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 516 SDtfs, 813 SDslu, 375 SDs, 0 SdLazy, 1975 SolverSat, 520 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=521occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 198 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 62058 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...