/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_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:50:49,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:50:49,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:50:49,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:50:49,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:50:49,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:50:49,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:50:49,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:50:49,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:50:49,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:50:49,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:50:49,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:50:49,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:50:49,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:50:49,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:50:49,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:50:49,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:50:49,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:50:49,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:50:49,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:50:49,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:50:49,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:50:49,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:50:49,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:50:49,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 12:50:49,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 12:50:49,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 12:50:49,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 12:50:49,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 12:50:49,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 12:50:49,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 12:50:49,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 12:50:49,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 12:50:49,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 12:50:49,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 12:50:49,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 12:50:49,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 12:50:49,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 12:50:49,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:50:49,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:50:49,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:50:49,369 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 [2020-07-21 12:50:49,383 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:50:49,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:50:49,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:50:49,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:50:49,385 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:50:49,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:50:49,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:50:49,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:50:49,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:50:49,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:50:49,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:50:49,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:50:49,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:50:49,387 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:50:49,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:50:49,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:50:49,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:50:49,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:50:49,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:50:49,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:50:49,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:50:49,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:50:49,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:50:49,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:50:49,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:50:49,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:50:49,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:49,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:50:49,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:50:49,390 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_FUNCTIONS 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 -> 2 [2020-07-21 12:50:49,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:50:49,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:50:49,682 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:50:49,683 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:50:49,684 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:50:49,685 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2020-07-21 12:50:49,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d23145ed7/b5fe9db428bd4e359353252ad7050fee/FLAG35e21d0e4 [2020-07-21 12:50:50,286 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:50:50,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2020-07-21 12:50:50,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d23145ed7/b5fe9db428bd4e359353252ad7050fee/FLAG35e21d0e4 [2020-07-21 12:50:50,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d23145ed7/b5fe9db428bd4e359353252ad7050fee [2020-07-21 12:50:50,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:50:50,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:50:50,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:50:50,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:50:50,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:50:50,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:50:50" (1/1) ... [2020-07-21 12:50:50,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57fa8424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:50, skipping insertion in model container [2020-07-21 12:50:50,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:50:50" (1/1) ... [2020-07-21 12:50:50,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:50:50,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:50:51,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:50:51,091 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:50:51,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:50:51,233 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:50:51,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:51 WrapperNode [2020-07-21 12:50:51,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:50:51,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:50:51,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:50:51,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:50:51,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:51" (1/1) ... [2020-07-21 12:50:51,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:51" (1/1) ... [2020-07-21 12:50:51,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:51" (1/1) ... [2020-07-21 12:50:51,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:51" (1/1) ... [2020-07-21 12:50:51,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:51" (1/1) ... [2020-07-21 12:50:51,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:51" (1/1) ... [2020-07-21 12:50:51,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:51" (1/1) ... [2020-07-21 12:50:51,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:50:51,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:50:51,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:50:51,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:50:51,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:51" (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 [2020-07-21 12:50:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:50:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:50:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 12:50:51,391 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 12:50:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 12:50:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 12:50:51,392 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 12:50:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 12:50:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 12:50:51,393 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 12:50:51,394 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-21 12:50:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-21 12:50:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 12:50:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 12:50:51,395 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 12:50:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 12:50:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 12:50:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 12:50:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 12:50:51,396 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-21 12:50:51,397 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-21 12:50:51,397 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 12:50:51,398 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 12:50:51,398 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 12:50:51,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 12:50:51,400 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 12:50:51,400 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 12:50:51,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 12:50:51,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-21 12:50:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 12:50:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 12:50:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 12:50:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 12:50:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 12:50:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:50:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-21 12:50:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 12:50:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 12:50:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 12:50:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 12:50:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 12:50:51,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 12:50:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:50:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 12:50:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 12:50:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 12:50:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 12:50:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 12:50:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 12:50:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 12:50:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 12:50:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-21 12:50:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 12:50:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 12:50:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 12:50:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 12:50:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 12:50:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 12:50:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 12:50:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-21 12:50:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 12:50:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 12:50:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 12:50:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 12:50:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-21 12:50:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 12:50:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 12:50:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 12:50:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-21 12:50:51,408 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-21 12:50:51,409 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-21 12:50:51,409 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 12:50:51,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 12:50:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 12:50:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 12:50:51,410 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 12:50:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 12:50:51,411 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 12:50:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:50:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 12:50:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 12:50:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 12:50:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 12:50:51,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 12:50:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 12:50:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 12:50:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 12:50:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 12:50:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 12:50:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 12:50:51,413 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 12:50:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 12:50:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 12:50:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 12:50:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 12:50:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:50:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 12:50:51,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:50:52,381 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:50:52,382 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 12:50:52,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:50:52 BoogieIcfgContainer [2020-07-21 12:50:52,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:50:52,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:50:52,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:50:52,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:50:52,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:50:50" (1/3) ... [2020-07-21 12:50:52,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21386386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:50:52, skipping insertion in model container [2020-07-21 12:50:52,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:51" (2/3) ... [2020-07-21 12:50:52,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21386386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:50:52, skipping insertion in model container [2020-07-21 12:50:52,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:50:52" (3/3) ... [2020-07-21 12:50:52,395 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product55.cil.c [2020-07-21 12:50:52,405 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:50:52,413 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:50:52,427 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:50:52,452 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:50:52,452 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:50:52,452 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:50:52,453 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:50:52,453 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:50:52,453 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:50:52,453 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:50:52,454 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:50:52,476 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-07-21 12:50:52,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 12:50:52,487 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:52,488 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] [2020-07-21 12:50:52,488 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:52,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:52,494 INFO L82 PathProgramCache]: Analyzing trace with hash 616057763, now seen corresponding path program 1 times [2020-07-21 12:50:52,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:52,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617734970] [2020-07-21 12:50:52,504 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 12:50:52,929 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:52,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:52,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 12:50:52,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:52,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:52,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617734970] [2020-07-21 12:50:52,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:52,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 12:50:52,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398547191] [2020-07-21 12:50:52,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 12:50:52,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:52,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 12:50:52,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:50:52,994 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 2 states. [2020-07-21 12:50:53,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:53,042 INFO L93 Difference]: Finished difference Result 298 states and 373 transitions. [2020-07-21 12:50:53,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 12:50:53,044 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 12:50:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:53,056 INFO L225 Difference]: With dead ends: 298 [2020-07-21 12:50:53,056 INFO L226 Difference]: Without dead ends: 149 [2020-07-21 12:50:53,061 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 [2020-07-21 12:50:53,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-07-21 12:50:53,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2020-07-21 12:50:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-07-21 12:50:53,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 178 transitions. [2020-07-21 12:50:53,119 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 178 transitions. Word has length 46 [2020-07-21 12:50:53,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:53,120 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 178 transitions. [2020-07-21 12:50:53,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 12:50:53,120 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 178 transitions. [2020-07-21 12:50:53,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 12:50:53,124 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:53,125 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] [2020-07-21 12:50:53,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:53,338 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:53,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:53,339 INFO L82 PathProgramCache]: Analyzing trace with hash -2016430514, now seen corresponding path program 1 times [2020-07-21 12:50:53,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:53,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000890577] [2020-07-21 12:50:53,340 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 12:50:53,708 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:53,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:53,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:50:53,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:53,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:53,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:53,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000890577] [2020-07-21 12:50:53,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:53,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:53,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459061186] [2020-07-21 12:50:53,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:53,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:53,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:53,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:53,758 INFO L87 Difference]: Start difference. First operand 149 states and 178 transitions. Second operand 3 states. [2020-07-21 12:50:53,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:53,807 INFO L93 Difference]: Finished difference Result 241 states and 287 transitions. [2020-07-21 12:50:53,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:53,808 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 12:50:53,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:53,813 INFO L225 Difference]: With dead ends: 241 [2020-07-21 12:50:53,814 INFO L226 Difference]: Without dead ends: 140 [2020-07-21 12:50:53,816 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 [2020-07-21 12:50:53,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-07-21 12:50:53,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-07-21 12:50:53,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-21 12:50:53,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 166 transitions. [2020-07-21 12:50:53,845 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 166 transitions. Word has length 47 [2020-07-21 12:50:53,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:53,845 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 166 transitions. [2020-07-21 12:50:53,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:53,846 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 166 transitions. [2020-07-21 12:50:53,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-21 12:50:53,856 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:53,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:54,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:54,073 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:54,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:54,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1603631393, now seen corresponding path program 1 times [2020-07-21 12:50:54,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:54,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121012220] [2020-07-21 12:50:54,076 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 12:50:54,352 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:54,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:54,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 12:50:54,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:54,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:54,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121012220] [2020-07-21 12:50:54,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:54,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:54,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953520559] [2020-07-21 12:50:54,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:54,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:54,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:54,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:54,398 INFO L87 Difference]: Start difference. First operand 140 states and 166 transitions. Second operand 3 states. [2020-07-21 12:50:54,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:54,431 INFO L93 Difference]: Finished difference Result 370 states and 450 transitions. [2020-07-21 12:50:54,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:54,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-21 12:50:54,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:54,436 INFO L225 Difference]: With dead ends: 370 [2020-07-21 12:50:54,436 INFO L226 Difference]: Without dead ends: 254 [2020-07-21 12:50:54,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:54,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-07-21 12:50:54,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 250. [2020-07-21 12:50:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-07-21 12:50:54,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 303 transitions. [2020-07-21 12:50:54,469 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 303 transitions. Word has length 51 [2020-07-21 12:50:54,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:54,469 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 303 transitions. [2020-07-21 12:50:54,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:54,469 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 303 transitions. [2020-07-21 12:50:54,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 12:50:54,472 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:54,473 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] [2020-07-21 12:50:54,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:54,687 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:54,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:54,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1180849517, now seen corresponding path program 1 times [2020-07-21 12:50:54,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:54,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615682436] [2020-07-21 12:50:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 12:50:55,013 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:55,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:55,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 12:50:55,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:55,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:55,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615682436] [2020-07-21 12:50:55,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:55,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:55,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403301583] [2020-07-21 12:50:55,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:55,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:55,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:55,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:55,064 INFO L87 Difference]: Start difference. First operand 250 states and 303 transitions. Second operand 6 states. [2020-07-21 12:50:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:55,376 INFO L93 Difference]: Finished difference Result 691 states and 857 transitions. [2020-07-21 12:50:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:50:55,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-21 12:50:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:55,381 INFO L225 Difference]: With dead ends: 691 [2020-07-21 12:50:55,381 INFO L226 Difference]: Without dead ends: 465 [2020-07-21 12:50:55,383 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 [2020-07-21 12:50:55,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-07-21 12:50:55,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 461. [2020-07-21 12:50:55,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-07-21 12:50:55,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 564 transitions. [2020-07-21 12:50:55,423 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 564 transitions. Word has length 57 [2020-07-21 12:50:55,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:55,424 INFO L479 AbstractCegarLoop]: Abstraction has 461 states and 564 transitions. [2020-07-21 12:50:55,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:55,424 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 564 transitions. [2020-07-21 12:50:55,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-21 12:50:55,428 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:55,428 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] [2020-07-21 12:50:55,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:55,642 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:55,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:55,642 INFO L82 PathProgramCache]: Analyzing trace with hash -687352489, now seen corresponding path program 1 times [2020-07-21 12:50:55,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:55,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304346236] [2020-07-21 12:50:55,643 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 12:50:55,943 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:55,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:55,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 12:50:55,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:55,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:55,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:56,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304346236] [2020-07-21 12:50:56,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:56,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:56,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833669728] [2020-07-21 12:50:56,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:56,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:56,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:56,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:56,003 INFO L87 Difference]: Start difference. First operand 461 states and 564 transitions. Second operand 6 states. [2020-07-21 12:50:56,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:56,264 INFO L93 Difference]: Finished difference Result 1114 states and 1426 transitions. [2020-07-21 12:50:56,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:50:56,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-07-21 12:50:56,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:56,272 INFO L225 Difference]: With dead ends: 1114 [2020-07-21 12:50:56,272 INFO L226 Difference]: Without dead ends: 677 [2020-07-21 12:50:56,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:50:56,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2020-07-21 12:50:56,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 665. [2020-07-21 12:50:56,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-07-21 12:50:56,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 818 transitions. [2020-07-21 12:50:56,316 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 818 transitions. Word has length 61 [2020-07-21 12:50:56,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:56,317 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 818 transitions. [2020-07-21 12:50:56,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:56,317 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 818 transitions. [2020-07-21 12:50:56,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-21 12:50:56,320 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:56,321 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] [2020-07-21 12:50:56,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:56,533 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:56,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:56,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1185420344, now seen corresponding path program 1 times [2020-07-21 12:50:56,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:56,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761834409] [2020-07-21 12:50:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 12:50:56,760 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:56,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:56,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 12:50:56,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:56,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:56,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761834409] [2020-07-21 12:50:56,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:56,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:56,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827148640] [2020-07-21 12:50:56,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:56,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:56,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:56,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:56,807 INFO L87 Difference]: Start difference. First operand 665 states and 818 transitions. Second operand 6 states. [2020-07-21 12:50:56,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:56,874 INFO L93 Difference]: Finished difference Result 1326 states and 1668 transitions. [2020-07-21 12:50:56,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 12:50:56,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-07-21 12:50:56,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:56,884 INFO L225 Difference]: With dead ends: 1326 [2020-07-21 12:50:56,884 INFO L226 Difference]: Without dead ends: 685 [2020-07-21 12:50:56,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 12:50:56,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-07-21 12:50:56,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 685. [2020-07-21 12:50:56,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-07-21 12:50:56,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 838 transitions. [2020-07-21 12:50:56,943 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 838 transitions. Word has length 88 [2020-07-21 12:50:56,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:56,946 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 838 transitions. [2020-07-21 12:50:56,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:56,946 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 838 transitions. [2020-07-21 12:50:56,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-21 12:50:56,951 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:56,951 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] [2020-07-21 12:50:57,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:57,165 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:57,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:57,165 INFO L82 PathProgramCache]: Analyzing trace with hash -910660730, now seen corresponding path program 1 times [2020-07-21 12:50:57,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:57,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658176570] [2020-07-21 12:50:57,166 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 12:50:57,449 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:57,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:57,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 12:50:57,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:57,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:57,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658176570] [2020-07-21 12:50:57,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:57,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 12:50:57,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705865089] [2020-07-21 12:50:57,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 12:50:57,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:57,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 12:50:57,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:50:57,489 INFO L87 Difference]: Start difference. First operand 685 states and 838 transitions. Second operand 5 states. [2020-07-21 12:50:57,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:57,524 INFO L93 Difference]: Finished difference Result 1374 states and 1752 transitions. [2020-07-21 12:50:57,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 12:50:57,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-07-21 12:50:57,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:57,529 INFO L225 Difference]: With dead ends: 1374 [2020-07-21 12:50:57,529 INFO L226 Difference]: Without dead ends: 713 [2020-07-21 12:50:57,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:50:57,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-07-21 12:50:57,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 701. [2020-07-21 12:50:57,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-07-21 12:50:57,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 854 transitions. [2020-07-21 12:50:57,563 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 854 transitions. Word has length 88 [2020-07-21 12:50:57,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:57,564 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 854 transitions. [2020-07-21 12:50:57,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 12:50:57,564 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 854 transitions. [2020-07-21 12:50:57,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-21 12:50:57,566 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:57,566 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] [2020-07-21 12:50:57,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:57,779 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:57,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:57,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1039639525, now seen corresponding path program 1 times [2020-07-21 12:50:57,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:57,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540518147] [2020-07-21 12:50:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 12:50:58,000 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:58,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:58,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 12:50:58,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:58,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:58,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:58,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540518147] [2020-07-21 12:50:58,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:58,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:58,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233327171] [2020-07-21 12:50:58,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:58,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:58,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:58,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:58,044 INFO L87 Difference]: Start difference. First operand 701 states and 854 transitions. Second operand 3 states. [2020-07-21 12:50:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:58,108 INFO L93 Difference]: Finished difference Result 1971 states and 2554 transitions. [2020-07-21 12:50:58,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:58,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-07-21 12:50:58,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:58,116 INFO L225 Difference]: With dead ends: 1971 [2020-07-21 12:50:58,117 INFO L226 Difference]: Without dead ends: 1294 [2020-07-21 12:50:58,119 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:58,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2020-07-21 12:50:58,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1291. [2020-07-21 12:50:58,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1291 states. [2020-07-21 12:50:58,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1618 transitions. [2020-07-21 12:50:58,219 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1618 transitions. Word has length 88 [2020-07-21 12:50:58,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:58,220 INFO L479 AbstractCegarLoop]: Abstraction has 1291 states and 1618 transitions. [2020-07-21 12:50:58,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:58,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1618 transitions. [2020-07-21 12:50:58,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-07-21 12:50:58,223 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:58,224 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] [2020-07-21 12:50:58,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:58,439 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:58,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:58,440 INFO L82 PathProgramCache]: Analyzing trace with hash 745790239, now seen corresponding path program 1 times [2020-07-21 12:50:58,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:58,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336182447] [2020-07-21 12:50:58,441 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 12:50:58,732 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:58,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 12:50:58,732 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:50:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 12:50:58,835 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:50:59,160 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 12:50:59,160 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 12:50:59,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:59,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:50:59 BoogieIcfgContainer [2020-07-21 12:50:59,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 12:50:59,544 INFO L168 Benchmark]: Toolchain (without parser) took 8970.01 ms. Allocated memory was 138.4 MB in the beginning and 320.3 MB in the end (delta: 181.9 MB). Free memory was 100.5 MB in the beginning and 159.0 MB in the end (delta: -58.5 MB). Peak memory consumption was 123.4 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:59,544 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory is still 120.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 12:50:59,545 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.53 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 100.1 MB in the beginning and 169.8 MB in the end (delta: -69.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:59,546 INFO L168 Benchmark]: Boogie Preprocessor took 90.65 ms. Allocated memory is still 202.4 MB. Free memory was 169.8 MB in the beginning and 165.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:59,547 INFO L168 Benchmark]: RCFGBuilder took 1061.92 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 165.1 MB in the beginning and 193.7 MB in the end (delta: -28.6 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:59,547 INFO L168 Benchmark]: TraceAbstraction took 7153.57 ms. Allocated memory was 235.9 MB in the beginning and 320.3 MB in the end (delta: 84.4 MB). Free memory was 193.7 MB in the beginning and 159.0 MB in the end (delta: 34.7 MB). Peak memory consumption was 119.2 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:59,551 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory is still 120.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 658.53 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 100.1 MB in the beginning and 169.8 MB in the end (delta: -69.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.65 ms. Allocated memory is still 202.4 MB. Free memory was 169.8 MB in the beginning and 165.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1061.92 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 165.1 MB in the beginning and 193.7 MB in the end (delta: -28.6 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7153.57 ms. Allocated memory was 235.9 MB in the beginning and 320.3 MB in the end (delta: 84.4 MB). Free memory was 193.7 MB in the beginning and 159.0 MB in the end (delta: 34.7 MB). Peak memory consumption was 119.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 506]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L159] int pumpRunning = 0; [L160] int systemActive = 1; [L399] int waterLevel = 1; [L400] int methaneLevelCritical = 0; [L511] int cleanupTimeShifts = 4; [L802] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [\old(cleanupTimeShifts)=51, \old(head)=23, \old(head)=48, \old(methaneLevelCritical)=36, \old(pumpRunning)=43, \old(systemActive)=61, \old(waterLevel)=24, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L584] int retValue_acc ; [L585] 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] [L589] 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] [L590] 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] [L591] 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] [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] 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] [L591] 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] [L591] tmp = valid_product() [L593] 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] [L595] 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] [L596] 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] [L578] 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] [L84] int splverifierCounter ; [L85] int tmp ; [L86] int tmp___0 ; [L87] int tmp___1 ; [L88] int tmp___2 ; [L91] 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] [L93] 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] [L95] 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] [L101] tmp = __VERIFIER_nondet_int() [L103] 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] [L105] 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] [L417] COND TRUE waterLevel < 2 [L418] 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] [L105] 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] [L111] tmp___0 = __VERIFIER_nondet_int() [L113] 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] [L115] 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] [L429] COND FALSE !(\read(methaneLevelCritical)) [L432] 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] [L115] 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] [L121] tmp___2 = __VERIFIER_nondet_int() [L123] COND TRUE \read(tmp___2) 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___2=-1, waterLevel=2] [L138] 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] [L167] 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] [L174] 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] [L176] 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] [L248] 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] [L251] 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] [L266] 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] [L222] 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] [L225] 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] [L240] 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] [L196] 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] [L199] 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] [L201] 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] [L345] int retValue_acc ; [L346] int tmp ; [L347] 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] [L351] 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] [L479] 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] [L482] COND FALSE !(waterLevel < 2) [L486] retValue_acc = 0 [L487] 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] [L351] 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] [L351] tmp = isHighWaterSensorDry() [L353] COND FALSE !(\read(tmp)) [L356] 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] [L358] retValue_acc = tmp___0 [L359] 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] [L201] 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] [L201] tmp = isHighWaterLevel() [L203] 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] [L205] 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] [L276] 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] [L205] 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] [L240] 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] [L266] 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] [L176] 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] [L182] 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] [L608] int tmp ; [L609] 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] [L613] 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] [L438] int retValue_acc ; [L441] retValue_acc = methaneLevelCritical [L442] 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] [L613] 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] [L613] tmp = isMethaneLevelCritical() [L615] 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] [L617] 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] [L300] int retValue_acc ; [L303] retValue_acc = pumpRunning [L304] 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] [L617] 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] [L617] tmp___0 = isPumpRunning() [L619] 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] [L621] 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] [L506] __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 42 procedures, 251 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1458 SDtfs, 474 SDslu, 2672 SDs, 0 SdLazy, 212 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 523 GetRequests, 499 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1291occurred 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, 35 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 618 NumberOfCodeBlocks, 618 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 518 ConstructedInterpolants, 0 QuantifiedInterpolants, 58000 SizeOfPredicates, 20 NumberOfNonLiveVariables, 5536 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...