/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 16:22:38,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 16:22:38,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 16:22:38,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 16:22:38,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 16:22:38,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 16:22:38,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 16:22:38,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 16:22:38,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 16:22:38,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 16:22:38,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 16:22:38,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 16:22:38,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 16:22:38,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 16:22:38,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 16:22:38,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 16:22:38,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 16:22:38,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 16:22:38,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 16:22:38,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 16:22:38,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 16:22:38,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 16:22:38,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 16:22:38,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 16:22:38,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 16:22:38,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 16:22:38,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 16:22:38,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 16:22:38,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 16:22:38,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 16:22:38,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 16:22:38,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 16:22:38,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 16:22:38,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 16:22:38,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 16:22:38,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 16:22:38,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 16:22:38,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 16:22:38,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 16:22:38,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 16:22:38,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 16:22:38,440 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 16:22:38,455 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 16:22:38,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 16:22:38,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 16:22:38,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 16:22:38,457 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 16:22:38,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 16:22:38,458 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 16:22:38,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 16:22:38,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 16:22:38,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 16:22:38,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 16:22:38,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 16:22:38,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 16:22:38,459 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 16:22:38,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 16:22:38,459 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 16:22:38,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 16:22:38,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 16:22:38,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 16:22:38,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 16:22:38,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 16:22:38,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 16:22:38,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 16:22:38,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 16:22:38,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 16:22:38,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 16:22:38,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:38,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 16:22:38,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 16:22:38,462 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 16:22:38,725 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 16:22:38,738 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 16:22:38,742 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 16:22:38,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 16:22:38,743 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 16:22:38,744 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2020-07-20 16:22:38,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7918ab40/169196beaa354f0c9b243281221afce4/FLAG7c0da04f4 [2020-07-20 16:22:39,357 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 16:22:39,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product56.cil.c [2020-07-20 16:22:39,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7918ab40/169196beaa354f0c9b243281221afce4/FLAG7c0da04f4 [2020-07-20 16:22:39,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7918ab40/169196beaa354f0c9b243281221afce4 [2020-07-20 16:22:39,663 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 16:22:39,666 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 16:22:39,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 16:22:39,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 16:22:39,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 16:22:39,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:22:39" (1/1) ... [2020-07-20 16:22:39,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@acd029a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:39, skipping insertion in model container [2020-07-20 16:22:39,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:22:39" (1/1) ... [2020-07-20 16:22:39,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 16:22:39,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 16:22:40,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:22:40,214 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 16:22:40,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:22:40,371 INFO L208 MainTranslator]: Completed translation [2020-07-20 16:22:40,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:40 WrapperNode [2020-07-20 16:22:40,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 16:22:40,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 16:22:40,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 16:22:40,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 16:22:40,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:40" (1/1) ... [2020-07-20 16:22:40,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:40" (1/1) ... [2020-07-20 16:22:40,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:40" (1/1) ... [2020-07-20 16:22:40,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:40" (1/1) ... [2020-07-20 16:22:40,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:40" (1/1) ... [2020-07-20 16:22:40,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:40" (1/1) ... [2020-07-20 16:22:40,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:40" (1/1) ... [2020-07-20 16:22:40,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 16:22:40,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 16:22:40,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 16:22:40,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 16:22:40,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 16:22:40,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 16:22:40,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 16:22:40,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 16:22:40,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 16:22:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 16:22:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 16:22:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 16:22:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 16:22:40,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 16:22:40,558 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 16:22:40,558 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 16:22:40,558 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 16:22:40,558 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 16:22:40,558 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-20 16:22:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 16:22:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 16:22:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 16:22:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 16:22:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 16:22:40,559 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 16:22:40,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 16:22:40,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-20 16:22:40,560 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-20 16:22:40,560 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-20 16:22:40,560 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 16:22:40,561 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 16:22:40,561 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 16:22:40,561 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 16:22:40,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-20 16:22:40,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 16:22:40,562 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 16:22:40,562 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 16:22:40,562 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 16:22:40,562 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 16:22:40,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 16:22:40,563 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 16:22:40,563 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 16:22:40,563 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 16:22:40,563 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 16:22:40,563 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 16:22:40,564 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 16:22:40,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 16:22:40,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-20 16:22:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 16:22:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 16:22:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 16:22:40,564 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 16:22:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 16:22:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 16:22:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 16:22:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 16:22:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 16:22:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 16:22:40,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 16:22:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 16:22:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 16:22:40,566 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 16:22:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 16:22:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 16:22:40,567 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 16:22:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 16:22:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 16:22:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 16:22:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 16:22:40,568 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 16:22:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-20 16:22:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-20 16:22:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 16:22:40,569 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 16:22:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 16:22:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 16:22:40,570 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 16:22:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 16:22:40,571 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 16:22:40,572 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-20 16:22:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 16:22:40,573 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 16:22:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 16:22:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 16:22:40,574 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-20 16:22:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 16:22:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 16:22:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 16:22:40,575 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 16:22:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-20 16:22:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-20 16:22:40,576 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 16:22:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 16:22:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 16:22:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 16:22:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 16:22:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 16:22:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 16:22:40,577 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 16:22:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 16:22:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 16:22:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 16:22:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 16:22:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 16:22:40,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 16:22:41,666 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 16:22:41,666 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 16:22:41,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:22:41 BoogieIcfgContainer [2020-07-20 16:22:41,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 16:22:41,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 16:22:41,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 16:22:41,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 16:22:41,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:22:39" (1/3) ... [2020-07-20 16:22:41,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e349674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:22:41, skipping insertion in model container [2020-07-20 16:22:41,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:22:40" (2/3) ... [2020-07-20 16:22:41,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e349674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:22:41, skipping insertion in model container [2020-07-20 16:22:41,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:22:41" (3/3) ... [2020-07-20 16:22:41,686 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product56.cil.c [2020-07-20 16:22:41,696 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 16:22:41,705 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 16:22:41,720 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 16:22:41,740 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 16:22:41,740 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 16:22:41,741 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 16:22:41,741 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 16:22:41,741 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 16:22:41,741 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 16:22:41,742 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 16:22:41,742 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 16:22:41,763 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states. [2020-07-20 16:22:41,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 16:22:41,774 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:41,775 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] [2020-07-20 16:22:41,775 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:41,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:41,781 INFO L82 PathProgramCache]: Analyzing trace with hash 733672736, now seen corresponding path program 1 times [2020-07-20 16:22:41,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:41,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020298522] [2020-07-20 16:22:41,791 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:42,286 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:42,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:42,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 16:22:42,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:42,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:42,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020298522] [2020-07-20 16:22:42,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:42,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 16:22:42,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112308448] [2020-07-20 16:22:42,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 16:22:42,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:42,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 16:22:42,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:22:42,391 INFO L87 Difference]: Start difference. First operand 196 states. Second operand 2 states. [2020-07-20 16:22:42,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:42,458 INFO L93 Difference]: Finished difference Result 306 states and 381 transitions. [2020-07-20 16:22:42,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 16:22:42,460 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 16:22:42,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:42,474 INFO L225 Difference]: With dead ends: 306 [2020-07-20 16:22:42,474 INFO L226 Difference]: Without dead ends: 153 [2020-07-20 16:22:42,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:22:42,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-07-20 16:22:42,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2020-07-20 16:22:42,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-07-20 16:22:42,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 182 transitions. [2020-07-20 16:22:42,534 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 182 transitions. Word has length 46 [2020-07-20 16:22:42,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:42,534 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 182 transitions. [2020-07-20 16:22:42,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 16:22:42,535 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 182 transitions. [2020-07-20 16:22:42,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 16:22:42,538 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:42,538 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] [2020-07-20 16:22:42,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:42,754 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:42,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:42,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1141201306, now seen corresponding path program 1 times [2020-07-20 16:22:42,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:42,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213131179] [2020-07-20 16:22:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:43,259 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:43,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:43,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 16:22:43,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:43,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:43,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:43,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213131179] [2020-07-20 16:22:43,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:43,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:43,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679179830] [2020-07-20 16:22:43,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:43,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:43,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:43,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:43,308 INFO L87 Difference]: Start difference. First operand 153 states and 182 transitions. Second operand 3 states. [2020-07-20 16:22:43,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:43,333 INFO L93 Difference]: Finished difference Result 245 states and 291 transitions. [2020-07-20 16:22:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:43,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 16:22:43,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:43,336 INFO L225 Difference]: With dead ends: 245 [2020-07-20 16:22:43,337 INFO L226 Difference]: Without dead ends: 144 [2020-07-20 16:22:43,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:43,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-07-20 16:22:43,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-07-20 16:22:43,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-07-20 16:22:43,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2020-07-20 16:22:43,362 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 47 [2020-07-20 16:22:43,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:43,363 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2020-07-20 16:22:43,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:43,363 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2020-07-20 16:22:43,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 16:22:43,370 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:43,371 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] [2020-07-20 16:22:43,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:43,586 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:43,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:43,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1705860394, now seen corresponding path program 1 times [2020-07-20 16:22:43,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:43,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592197767] [2020-07-20 16:22:43,588 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:43,985 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:43,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:43,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 16:22:43,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:44,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:44,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592197767] [2020-07-20 16:22:44,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:44,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:44,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504652925] [2020-07-20 16:22:44,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:44,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:44,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:44,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:44,024 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand 3 states. [2020-07-20 16:22:44,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:44,060 INFO L93 Difference]: Finished difference Result 380 states and 461 transitions. [2020-07-20 16:22:44,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:44,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-20 16:22:44,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:44,064 INFO L225 Difference]: With dead ends: 380 [2020-07-20 16:22:44,064 INFO L226 Difference]: Without dead ends: 260 [2020-07-20 16:22:44,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:44,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-07-20 16:22:44,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 254. [2020-07-20 16:22:44,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-07-20 16:22:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 307 transitions. [2020-07-20 16:22:44,100 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 307 transitions. Word has length 52 [2020-07-20 16:22:44,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:44,101 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 307 transitions. [2020-07-20 16:22:44,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 307 transitions. [2020-07-20 16:22:44,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 16:22:44,103 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:44,104 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] [2020-07-20 16:22:44,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:44,318 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:44,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:44,319 INFO L82 PathProgramCache]: Analyzing trace with hash -986744431, now seen corresponding path program 1 times [2020-07-20 16:22:44,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:44,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162380677] [2020-07-20 16:22:44,320 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:44,677 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:44,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:44,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:22:44,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:44,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:44,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162380677] [2020-07-20 16:22:44,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:44,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:44,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196994232] [2020-07-20 16:22:44,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:44,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:44,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:44,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:44,732 INFO L87 Difference]: Start difference. First operand 254 states and 307 transitions. Second operand 6 states. [2020-07-20 16:22:44,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:44,966 INFO L93 Difference]: Finished difference Result 606 states and 767 transitions. [2020-07-20 16:22:44,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:22:44,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-20 16:22:44,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:44,971 INFO L225 Difference]: With dead ends: 606 [2020-07-20 16:22:44,971 INFO L226 Difference]: Without dead ends: 376 [2020-07-20 16:22:44,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 16:22:44,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-07-20 16:22:45,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 366. [2020-07-20 16:22:45,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-07-20 16:22:45,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 445 transitions. [2020-07-20 16:22:45,009 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 445 transitions. Word has length 57 [2020-07-20 16:22:45,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:45,009 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 445 transitions. [2020-07-20 16:22:45,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:45,009 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 445 transitions. [2020-07-20 16:22:45,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-07-20 16:22:45,012 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:45,013 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, 1, 1, 1] [2020-07-20 16:22:45,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:45,227 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:45,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:45,228 INFO L82 PathProgramCache]: Analyzing trace with hash 557418004, now seen corresponding path program 1 times [2020-07-20 16:22:45,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:45,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447655275] [2020-07-20 16:22:45,229 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:45,519 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:45,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:45,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:22:45,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:45,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:45,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:45,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447655275] [2020-07-20 16:22:45,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:45,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:45,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179727164] [2020-07-20 16:22:45,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:45,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:45,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:45,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:45,599 INFO L87 Difference]: Start difference. First operand 366 states and 445 transitions. Second operand 6 states. [2020-07-20 16:22:45,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:45,659 INFO L93 Difference]: Finished difference Result 718 states and 894 transitions. [2020-07-20 16:22:45,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 16:22:45,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-07-20 16:22:45,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:45,665 INFO L225 Difference]: With dead ends: 718 [2020-07-20 16:22:45,665 INFO L226 Difference]: Without dead ends: 376 [2020-07-20 16:22:45,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 16:22:45,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-07-20 16:22:45,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2020-07-20 16:22:45,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-07-20 16:22:45,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 455 transitions. [2020-07-20 16:22:45,721 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 455 transitions. Word has length 85 [2020-07-20 16:22:45,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:45,722 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 455 transitions. [2020-07-20 16:22:45,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:45,722 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 455 transitions. [2020-07-20 16:22:45,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-07-20 16:22:45,726 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:45,726 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, 1, 1, 1] [2020-07-20 16:22:45,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:45,933 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:45,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:45,934 INFO L82 PathProgramCache]: Analyzing trace with hash 832177618, now seen corresponding path program 1 times [2020-07-20 16:22:45,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:45,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122470255] [2020-07-20 16:22:45,935 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:46,094 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 16:22:46,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:46,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 16:22:46,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:46,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:46,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122470255] [2020-07-20 16:22:46,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:46,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 16:22:46,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659126496] [2020-07-20 16:22:46,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 16:22:46,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:46,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 16:22:46,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:22:46,127 INFO L87 Difference]: Start difference. First operand 376 states and 455 transitions. Second operand 5 states. [2020-07-20 16:22:46,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:46,157 INFO L93 Difference]: Finished difference Result 742 states and 936 transitions. [2020-07-20 16:22:46,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 16:22:46,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-07-20 16:22:46,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:46,161 INFO L225 Difference]: With dead ends: 742 [2020-07-20 16:22:46,161 INFO L226 Difference]: Without dead ends: 390 [2020-07-20 16:22:46,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:22:46,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-07-20 16:22:46,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 384. [2020-07-20 16:22:46,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-07-20 16:22:46,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 463 transitions. [2020-07-20 16:22:46,183 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 463 transitions. Word has length 85 [2020-07-20 16:22:46,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:46,183 INFO L479 AbstractCegarLoop]: Abstraction has 384 states and 463 transitions. [2020-07-20 16:22:46,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 16:22:46,183 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 463 transitions. [2020-07-20 16:22:46,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-07-20 16:22:46,185 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:46,185 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, 1, 1, 1] [2020-07-20 16:22:46,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:46,399 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:46,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:46,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1512489423, now seen corresponding path program 1 times [2020-07-20 16:22:46,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:46,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768819568] [2020-07-20 16:22:46,401 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:46,727 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:22:46,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:46,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 16:22:46,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:46,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:46,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768819568] [2020-07-20 16:22:46,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:46,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:22:46,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143376136] [2020-07-20 16:22:46,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:22:46,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:46,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:22:46,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:46,789 INFO L87 Difference]: Start difference. First operand 384 states and 463 transitions. Second operand 3 states. [2020-07-20 16:22:46,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:46,842 INFO L93 Difference]: Finished difference Result 1062 states and 1361 transitions. [2020-07-20 16:22:46,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:22:46,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-07-20 16:22:46,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:46,848 INFO L225 Difference]: With dead ends: 1062 [2020-07-20 16:22:46,849 INFO L226 Difference]: Without dead ends: 702 [2020-07-20 16:22:46,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:22:46,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-07-20 16:22:46,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 699. [2020-07-20 16:22:46,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-07-20 16:22:46,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 868 transitions. [2020-07-20 16:22:46,909 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 868 transitions. Word has length 85 [2020-07-20 16:22:46,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:46,909 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 868 transitions. [2020-07-20 16:22:46,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:22:46,909 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 868 transitions. [2020-07-20 16:22:46,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-20 16:22:46,919 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:46,919 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, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:47,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:47,134 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:47,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:47,135 INFO L82 PathProgramCache]: Analyzing trace with hash -745851657, now seen corresponding path program 1 times [2020-07-20 16:22:47,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:47,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671557778] [2020-07-20 16:22:47,136 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:47,468 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:47,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:22:47,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 16:22:47,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:22:47,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:22:47,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:22:47,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671557778] [2020-07-20 16:22:47,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:22:47,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:22:47,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928222507] [2020-07-20 16:22:47,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:22:47,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:22:47,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:22:47,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:22:47,528 INFO L87 Difference]: Start difference. First operand 699 states and 868 transitions. Second operand 6 states. [2020-07-20 16:22:47,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:22:47,779 INFO L93 Difference]: Finished difference Result 2014 states and 2562 transitions. [2020-07-20 16:22:47,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:22:47,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-07-20 16:22:47,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:22:47,791 INFO L225 Difference]: With dead ends: 2014 [2020-07-20 16:22:47,791 INFO L226 Difference]: Without dead ends: 1339 [2020-07-20 16:22:47,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 16:22:47,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2020-07-20 16:22:47,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1323. [2020-07-20 16:22:47,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1323 states. [2020-07-20 16:22:47,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1650 transitions. [2020-07-20 16:22:47,878 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1650 transitions. Word has length 89 [2020-07-20 16:22:47,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:22:47,878 INFO L479 AbstractCegarLoop]: Abstraction has 1323 states and 1650 transitions. [2020-07-20 16:22:47,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:22:47,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1650 transitions. [2020-07-20 16:22:47,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-07-20 16:22:47,883 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:22:47,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:22:48,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:48,098 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:22:48,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:22:48,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1174397627, now seen corresponding path program 1 times [2020-07-20 16:22:48,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:22:48,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207664365] [2020-07-20 16:22:48,100 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:48,493 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:22:48,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 16:22:48,494 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:22:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 16:22:48,579 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:22:48,840 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 16:22:48,840 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 16:22:49,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:22:49,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:22:49 BoogieIcfgContainer [2020-07-20 16:22:49,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 16:22:49,260 INFO L168 Benchmark]: Toolchain (without parser) took 9590.27 ms. Allocated memory was 137.9 MB in the beginning and 320.9 MB in the end (delta: 183.0 MB). Free memory was 100.8 MB in the beginning and 183.7 MB in the end (delta: -82.9 MB). Peak memory consumption was 100.1 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:49,261 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 16:22:49,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.60 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 100.4 MB in the beginning and 168.7 MB in the end (delta: -68.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:49,263 INFO L168 Benchmark]: Boogie Preprocessor took 91.98 ms. Allocated memory is still 202.4 MB. Free memory was 168.7 MB in the beginning and 164.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:49,264 INFO L168 Benchmark]: RCFGBuilder took 1209.03 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 164.6 MB in the beginning and 190.6 MB in the end (delta: -26.0 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:49,270 INFO L168 Benchmark]: TraceAbstraction took 7577.10 ms. Allocated memory was 234.4 MB in the beginning and 320.9 MB in the end (delta: 86.5 MB). Free memory was 190.6 MB in the beginning and 183.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 93.4 MB. Max. memory is 7.1 GB. [2020-07-20 16:22:49,275 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 702.60 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 100.4 MB in the beginning and 168.7 MB in the end (delta: -68.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.98 ms. Allocated memory is still 202.4 MB. Free memory was 168.7 MB in the beginning and 164.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1209.03 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 164.6 MB in the beginning and 190.6 MB in the end (delta: -26.0 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7577.10 ms. Allocated memory was 234.4 MB in the beginning and 320.9 MB in the end (delta: 86.5 MB). Free memory was 190.6 MB in the beginning and 183.7 MB in the end (delta: 6.9 MB). Peak memory consumption was 93.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 806]: 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; [L490] int pumpRunning = 0; [L491] int systemActive = 1; [L811] int cleanupTimeShifts = 4; [L908] int waterLevel = 1; [L909] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=42, \old(head)=74, \old(head)=53, \old(methaneLevelCritical)=63, \old(pumpRunning)=70, \old(systemActive)=56, \old(waterLevel)=94, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L884] int retValue_acc ; [L885] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L889] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L890] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L891] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L766] int retValue_acc ; [L769] retValue_acc = 1 [L770] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L891] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L891] tmp = valid_product() [L893] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L895] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L896] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L878] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L413] int splverifierCounter ; [L414] int tmp ; [L415] int tmp___0 ; [L416] int tmp___1 ; [L417] int tmp___2 ; [L420] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L422] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L424] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L430] tmp = __VERIFIER_nondet_int() [L432] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L434] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L926] COND TRUE waterLevel < 2 [L927] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L434] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L440] tmp___0 = __VERIFIER_nondet_int() [L442] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L444] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L938] COND FALSE !(\read(methaneLevelCritical)) [L941] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L444] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L450] tmp___2 = __VERIFIER_nondet_int() [L452] COND FALSE !(\read(tmp___2)) [L458] tmp___1 = __VERIFIER_nondet_int() [L460] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L469] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L498] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L505] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L507] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L579] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L582] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L597] CALL processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L553] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L556] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L571] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L527] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L530] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L532] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L676] int retValue_acc ; [L677] int tmp ; [L678] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L682] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L988] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L991] COND FALSE !(waterLevel < 2) [L995] retValue_acc = 0 [L996] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L682] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L682] tmp = isHighWaterSensorDry() [L684] COND FALSE !(\read(tmp)) [L687] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L689] retValue_acc = tmp___0 [L690] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L532] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L532] tmp = isHighWaterLevel() [L534] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L536] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L607] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L536] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L571] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L597] RET processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L507] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L513] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L777] int tmp ; [L778] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L782] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L947] int retValue_acc ; [L950] retValue_acc = methaneLevelCritical [L951] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L782] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L782] tmp = isMethaneLevelCritical() [L784] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L786] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L631] int retValue_acc ; [L634] retValue_acc = pumpRunning [L635] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L786] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L786] tmp___0 = isPumpRunning() [L788] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L790] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L806] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 255 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.3s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1487 SDtfs, 460 SDslu, 2738 SDs, 0 SdLazy, 216 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 543 GetRequests, 519 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1323occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 41 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 639 NumberOfCodeBlocks, 517 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 538 ConstructedInterpolants, 0 QuantifiedInterpolants, 68754 SizeOfPredicates, 20 NumberOfNonLiveVariables, 5335 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...