/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 10:35:26,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 10:35:26,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 10:35:26,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 10:35:26,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 10:35:26,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 10:35:26,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 10:35:26,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 10:35:26,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 10:35:26,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 10:35:26,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 10:35:26,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 10:35:26,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 10:35:26,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 10:35:26,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 10:35:26,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 10:35:26,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 10:35:26,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 10:35:26,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 10:35:26,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 10:35:26,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 10:35:26,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 10:35:26,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 10:35:26,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 10:35:26,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 10:35:26,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 10:35:26,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 10:35:26,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 10:35:26,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 10:35:26,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 10:35:26,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 10:35:26,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 10:35:26,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 10:35:26,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 10:35:26,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 10:35:26,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 10:35:26,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 10:35:26,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 10:35:26,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 10:35:26,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 10:35:26,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 10:35:26,317 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 10:35:26,331 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 10:35:26,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 10:35:26,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 10:35:26,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 10:35:26,333 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 10:35:26,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 10:35:26,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 10:35:26,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 10:35:26,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 10:35:26,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 10:35:26,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 10:35:26,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 10:35:26,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 10:35:26,335 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 10:35:26,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 10:35:26,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 10:35:26,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 10:35:26,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 10:35:26,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 10:35:26,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 10:35:26,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 10:35:26,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 10:35:26,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 10:35:26,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 10:35:26,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 10:35:26,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 10:35:26,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:26,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 10:35:26,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 10:35:26,338 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 -> NOT_INCREMENTALLY [2020-07-21 10:35:26,620 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 10:35:26,633 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 10:35:26,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 10:35:26,638 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 10:35:26,640 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 10:35:26,642 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-07-21 10:35:26,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/752108b0d/32834d7e224f4fc3ab34f79a22576861/FLAG11b054953 [2020-07-21 10:35:27,212 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 10:35:27,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product52.cil.c [2020-07-21 10:35:27,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/752108b0d/32834d7e224f4fc3ab34f79a22576861/FLAG11b054953 [2020-07-21 10:35:27,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/752108b0d/32834d7e224f4fc3ab34f79a22576861 [2020-07-21 10:35:27,532 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 10:35:27,534 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 10:35:27,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 10:35:27,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 10:35:27,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 10:35:27,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:35:27" (1/1) ... [2020-07-21 10:35:27,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe45b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:27, skipping insertion in model container [2020-07-21 10:35:27,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:35:27" (1/1) ... [2020-07-21 10:35:27,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 10:35:27,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 10:35:27,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:35:28,039 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 10:35:28,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:35:28,228 INFO L208 MainTranslator]: Completed translation [2020-07-21 10:35:28,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:28 WrapperNode [2020-07-21 10:35:28,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 10:35:28,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 10:35:28,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 10:35:28,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 10:35:28,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:28" (1/1) ... [2020-07-21 10:35:28,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:28" (1/1) ... [2020-07-21 10:35:28,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:28" (1/1) ... [2020-07-21 10:35:28,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:28" (1/1) ... [2020-07-21 10:35:28,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:28" (1/1) ... [2020-07-21 10:35:28,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:28" (1/1) ... [2020-07-21 10:35:28,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:28" (1/1) ... [2020-07-21 10:35:28,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 10:35:28,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 10:35:28,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 10:35:28,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 10:35:28,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:28" (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 10:35:28,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 10:35:28,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 10:35:28,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 10:35:28,386 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 10:35:28,386 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 10:35:28,386 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 10:35:28,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 10:35:28,386 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 10:35:28,386 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 10:35:28,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 10:35:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-21 10:35:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 10:35:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 10:35:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-21 10:35:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 10:35:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 10:35:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 10:35:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 10:35:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 10:35:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 10:35:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 10:35:28,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-21 10:35:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-21 10:35:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-21 10:35:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 10:35:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 10:35:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 10:35:28,389 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 10:35:28,390 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 10:35:28,390 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 10:35:28,390 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 10:35:28,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-21 10:35:28,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 10:35:28,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 10:35:28,390 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 10:35:28,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 10:35:28,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 10:35:28,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 10:35:28,391 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 10:35:28,391 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 10:35:28,391 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 10:35:28,392 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 10:35:28,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 10:35:28,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 10:35:28,392 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 10:35:28,392 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 10:35:28,392 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 10:35:28,392 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 10:35:28,393 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 10:35:28,393 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 10:35:28,393 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 10:35:28,393 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 10:35:28,393 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-21 10:35:28,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 10:35:28,394 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 10:35:28,394 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 10:35:28,394 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 10:35:28,394 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 10:35:28,394 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 10:35:28,394 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-21 10:35:28,394 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-21 10:35:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-21 10:35:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 10:35:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 10:35:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 10:35:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-21 10:35:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-21 10:35:28,396 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 10:35:28,396 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 10:35:28,396 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 10:35:28,396 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 10:35:28,396 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 10:35:28,396 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 10:35:28,397 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 10:35:28,397 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 10:35:28,397 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 10:35:28,397 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 10:35:28,397 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 10:35:28,397 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 10:35:28,398 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 10:35:28,398 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 10:35:28,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 10:35:28,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 10:35:28,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 10:35:28,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 10:35:28,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 10:35:28,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 10:35:28,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 10:35:28,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 10:35:28,399 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 10:35:28,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 10:35:28,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 10:35:28,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 10:35:28,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 10:35:28,400 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 10:35:28,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 10:35:28,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 10:35:28,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 10:35:29,539 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 10:35:29,539 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 10:35:29,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:35:29 BoogieIcfgContainer [2020-07-21 10:35:29,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 10:35:29,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 10:35:29,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 10:35:29,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 10:35:29,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:35:27" (1/3) ... [2020-07-21 10:35:29,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba19bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:35:29, skipping insertion in model container [2020-07-21 10:35:29,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:28" (2/3) ... [2020-07-21 10:35:29,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba19bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:35:29, skipping insertion in model container [2020-07-21 10:35:29,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:35:29" (3/3) ... [2020-07-21 10:35:29,553 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product52.cil.c [2020-07-21 10:35:29,563 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 10:35:29,572 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 10:35:29,586 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 10:35:29,611 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 10:35:29,611 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 10:35:29,612 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 10:35:29,612 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 10:35:29,612 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 10:35:29,613 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 10:35:29,613 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 10:35:29,613 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 10:35:29,639 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2020-07-21 10:35:29,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 10:35:29,649 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:29,650 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 10:35:29,651 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:29,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:29,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1875422794, now seen corresponding path program 1 times [2020-07-21 10:35:29,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:29,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600851487] [2020-07-21 10:35:29,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:35:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:29,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 10:35:29,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:29,952 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 10:35:29,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:29,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600851487] [2020-07-21 10:35:29,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:29,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 10:35:29,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022657278] [2020-07-21 10:35:29,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 10:35:29,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:29,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 10:35:29,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 10:35:29,979 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 2 states. [2020-07-21 10:35:30,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:30,024 INFO L93 Difference]: Finished difference Result 276 states and 341 transitions. [2020-07-21 10:35:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 10:35:30,026 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 10:35:30,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:30,040 INFO L225 Difference]: With dead ends: 276 [2020-07-21 10:35:30,040 INFO L226 Difference]: Without dead ends: 138 [2020-07-21 10:35:30,045 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 10:35:30,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-07-21 10:35:30,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-07-21 10:35:30,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-07-21 10:35:30,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-07-21 10:35:30,105 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 46 [2020-07-21 10:35:30,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:30,105 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-07-21 10:35:30,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 10:35:30,106 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-07-21 10:35:30,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 10:35:30,109 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:30,109 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 10:35:30,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:30,324 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:30,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:30,325 INFO L82 PathProgramCache]: Analyzing trace with hash -2108875382, now seen corresponding path program 1 times [2020-07-21 10:35:30,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:30,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034782268] [2020-07-21 10:35:30,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:35:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:30,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 10:35:30,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:30,587 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 10:35:30,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:30,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034782268] [2020-07-21 10:35:30,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:30,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 10:35:30,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278954262] [2020-07-21 10:35:30,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 10:35:30,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:30,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 10:35:30,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:35:30,592 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 3 states. [2020-07-21 10:35:30,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:30,615 INFO L93 Difference]: Finished difference Result 215 states and 251 transitions. [2020-07-21 10:35:30,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 10:35:30,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 10:35:30,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:30,618 INFO L225 Difference]: With dead ends: 215 [2020-07-21 10:35:30,618 INFO L226 Difference]: Without dead ends: 129 [2020-07-21 10:35:30,620 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 10:35:30,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-07-21 10:35:30,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2020-07-21 10:35:30,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-07-21 10:35:30,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-07-21 10:35:30,634 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 47 [2020-07-21 10:35:30,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:30,634 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-07-21 10:35:30,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 10:35:30,634 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-07-21 10:35:30,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-21 10:35:30,637 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:30,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:35:30,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:30,848 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:30,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:30,849 INFO L82 PathProgramCache]: Analyzing trace with hash -2135499519, now seen corresponding path program 1 times [2020-07-21 10:35:30,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:30,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880037550] [2020-07-21 10:35:30,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:35:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:31,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 10:35:31,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:31,066 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 10:35:31,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:31,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880037550] [2020-07-21 10:35:31,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:31,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 10:35:31,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349670643] [2020-07-21 10:35:31,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 10:35:31,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:31,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 10:35:31,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:35:31,070 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 3 states. [2020-07-21 10:35:31,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:31,120 INFO L93 Difference]: Finished difference Result 335 states and 401 transitions. [2020-07-21 10:35:31,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 10:35:31,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-21 10:35:31,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:31,127 INFO L225 Difference]: With dead ends: 335 [2020-07-21 10:35:31,127 INFO L226 Difference]: Without dead ends: 230 [2020-07-21 10:35:31,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:35:31,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-07-21 10:35:31,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 224. [2020-07-21 10:35:31,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-07-21 10:35:31,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 267 transitions. [2020-07-21 10:35:31,189 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 267 transitions. Word has length 52 [2020-07-21 10:35:31,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:31,190 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 267 transitions. [2020-07-21 10:35:31,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 10:35:31,190 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 267 transitions. [2020-07-21 10:35:31,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 10:35:31,196 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:31,198 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 10:35:31,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:31,414 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:31,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:31,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1973278076, now seen corresponding path program 1 times [2020-07-21 10:35:31,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:31,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935960914] [2020-07-21 10:35:31,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:35:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:31,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 10:35:31,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:31,633 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 10:35:31,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:31,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935960914] [2020-07-21 10:35:31,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:31,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 10:35:31,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034485276] [2020-07-21 10:35:31,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 10:35:31,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:31,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 10:35:31,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 10:35:31,636 INFO L87 Difference]: Start difference. First operand 224 states and 267 transitions. Second operand 6 states. [2020-07-21 10:35:31,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:31,881 INFO L93 Difference]: Finished difference Result 538 states and 671 transitions. [2020-07-21 10:35:31,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 10:35:31,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-21 10:35:31,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:31,885 INFO L225 Difference]: With dead ends: 538 [2020-07-21 10:35:31,886 INFO L226 Difference]: Without dead ends: 338 [2020-07-21 10:35:31,888 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 10:35:31,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-07-21 10:35:31,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 328. [2020-07-21 10:35:31,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-07-21 10:35:31,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 395 transitions. [2020-07-21 10:35:31,917 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 395 transitions. Word has length 57 [2020-07-21 10:35:31,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:31,918 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 395 transitions. [2020-07-21 10:35:31,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 10:35:31,918 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 395 transitions. [2020-07-21 10:35:31,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-07-21 10:35:31,923 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:31,923 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] [2020-07-21 10:35:32,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:32,124 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:32,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:32,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1849713391, now seen corresponding path program 1 times [2020-07-21 10:35:32,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:32,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972532350] [2020-07-21 10:35:32,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:35:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:32,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 10:35:32,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:32,391 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 10:35:32,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:32,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972532350] [2020-07-21 10:35:32,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:32,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 10:35:32,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036853836] [2020-07-21 10:35:32,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 10:35:32,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:32,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 10:35:32,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 10:35:32,396 INFO L87 Difference]: Start difference. First operand 328 states and 395 transitions. Second operand 6 states. [2020-07-21 10:35:32,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:32,637 INFO L93 Difference]: Finished difference Result 917 states and 1137 transitions. [2020-07-21 10:35:32,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 10:35:32,639 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-07-21 10:35:32,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:32,645 INFO L225 Difference]: With dead ends: 917 [2020-07-21 10:35:32,646 INFO L226 Difference]: Without dead ends: 613 [2020-07-21 10:35:32,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 75 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 10:35:32,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2020-07-21 10:35:32,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 605. [2020-07-21 10:35:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-07-21 10:35:32,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 734 transitions. [2020-07-21 10:35:32,719 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 734 transitions. Word has length 80 [2020-07-21 10:35:32,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:32,720 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 734 transitions. [2020-07-21 10:35:32,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 10:35:32,720 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 734 transitions. [2020-07-21 10:35:32,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-21 10:35:32,723 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:32,723 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] [2020-07-21 10:35:32,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:32,937 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:32,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:32,938 INFO L82 PathProgramCache]: Analyzing trace with hash 16386475, now seen corresponding path program 1 times [2020-07-21 10:35:32,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:32,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [439038800] [2020-07-21 10:35:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:35:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:33,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 10:35:33,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:33,157 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 10:35:33,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:33,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [439038800] [2020-07-21 10:35:33,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:33,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 10:35:33,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136296524] [2020-07-21 10:35:33,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 10:35:33,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:33,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 10:35:33,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 10:35:33,160 INFO L87 Difference]: Start difference. First operand 605 states and 734 transitions. Second operand 6 states. [2020-07-21 10:35:33,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:33,208 INFO L93 Difference]: Finished difference Result 1206 states and 1492 transitions. [2020-07-21 10:35:33,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 10:35:33,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-07-21 10:35:33,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:33,213 INFO L225 Difference]: With dead ends: 1206 [2020-07-21 10:35:33,213 INFO L226 Difference]: Without dead ends: 625 [2020-07-21 10:35:33,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 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 10:35:33,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2020-07-21 10:35:33,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 625. [2020-07-21 10:35:33,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2020-07-21 10:35:33,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 754 transitions. [2020-07-21 10:35:33,248 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 754 transitions. Word has length 84 [2020-07-21 10:35:33,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:33,248 INFO L479 AbstractCegarLoop]: Abstraction has 625 states and 754 transitions. [2020-07-21 10:35:33,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 10:35:33,249 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 754 transitions. [2020-07-21 10:35:33,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-21 10:35:33,250 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:33,251 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] [2020-07-21 10:35:33,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:33,464 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:33,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:33,465 INFO L82 PathProgramCache]: Analyzing trace with hash 39018729, now seen corresponding path program 1 times [2020-07-21 10:35:33,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:33,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243290867] [2020-07-21 10:35:33,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:35:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:33,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 10:35:33,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:33,690 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 10:35:33,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:33,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243290867] [2020-07-21 10:35:33,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:33,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 10:35:33,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270343584] [2020-07-21 10:35:33,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 10:35:33,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:33,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 10:35:33,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 10:35:33,693 INFO L87 Difference]: Start difference. First operand 625 states and 754 transitions. Second operand 5 states. [2020-07-21 10:35:33,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:33,733 INFO L93 Difference]: Finished difference Result 1254 states and 1568 transitions. [2020-07-21 10:35:33,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 10:35:33,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-07-21 10:35:33,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:33,740 INFO L225 Difference]: With dead ends: 1254 [2020-07-21 10:35:33,741 INFO L226 Difference]: Without dead ends: 653 [2020-07-21 10:35:33,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 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 10:35:33,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-07-21 10:35:33,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 641. [2020-07-21 10:35:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-07-21 10:35:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 770 transitions. [2020-07-21 10:35:33,788 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 770 transitions. Word has length 84 [2020-07-21 10:35:33,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:33,789 INFO L479 AbstractCegarLoop]: Abstraction has 641 states and 770 transitions. [2020-07-21 10:35:33,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 10:35:33,789 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 770 transitions. [2020-07-21 10:35:33,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-21 10:35:33,796 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:33,796 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] [2020-07-21 10:35:34,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:34,011 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:34,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:34,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1064510728, now seen corresponding path program 1 times [2020-07-21 10:35:34,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:34,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114961908] [2020-07-21 10:35:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:35:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:34,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 10:35:34,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:34,262 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 10:35:34,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:34,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114961908] [2020-07-21 10:35:34,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:34,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 10:35:34,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091865876] [2020-07-21 10:35:34,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 10:35:34,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:34,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 10:35:34,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:35:34,265 INFO L87 Difference]: Start difference. First operand 641 states and 770 transitions. Second operand 3 states. [2020-07-21 10:35:34,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:34,325 INFO L93 Difference]: Finished difference Result 1791 states and 2282 transitions. [2020-07-21 10:35:34,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 10:35:34,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-07-21 10:35:34,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:34,333 INFO L225 Difference]: With dead ends: 1791 [2020-07-21 10:35:34,334 INFO L226 Difference]: Without dead ends: 1174 [2020-07-21 10:35:34,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 81 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 10:35:34,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2020-07-21 10:35:34,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1171. [2020-07-21 10:35:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1171 states. [2020-07-21 10:35:34,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1446 transitions. [2020-07-21 10:35:34,396 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1446 transitions. Word has length 84 [2020-07-21 10:35:34,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:34,397 INFO L479 AbstractCegarLoop]: Abstraction has 1171 states and 1446 transitions. [2020-07-21 10:35:34,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 10:35:34,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1446 transitions. [2020-07-21 10:35:34,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-21 10:35:34,400 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:34,400 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 10:35:34,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:34,616 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:34,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:34,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1546821858, now seen corresponding path program 1 times [2020-07-21 10:35:34,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:34,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543008731] [2020-07-21 10:35:34,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:35:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:35:34,900 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:35:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:35:34,998 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:35:35,298 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 10:35:35,299 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 10:35:35,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:35,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:35:35 BoogieIcfgContainer [2020-07-21 10:35:35,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 10:35:35,717 INFO L168 Benchmark]: Toolchain (without parser) took 8182.16 ms. Allocated memory was 137.4 MB in the beginning and 293.6 MB in the end (delta: 156.2 MB). Free memory was 99.9 MB in the beginning and 87.1 MB in the end (delta: 12.8 MB). Peak memory consumption was 169.0 MB. Max. memory is 7.1 GB. [2020-07-21 10:35:35,718 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 137.4 MB. Free memory is still 118.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 10:35:35,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.96 ms. Allocated memory was 137.4 MB in the beginning and 202.9 MB in the end (delta: 65.5 MB). Free memory was 99.5 MB in the beginning and 171.6 MB in the end (delta: -72.1 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2020-07-21 10:35:35,724 INFO L168 Benchmark]: Boogie Preprocessor took 85.69 ms. Allocated memory is still 202.9 MB. Free memory was 171.6 MB in the beginning and 167.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-21 10:35:35,725 INFO L168 Benchmark]: RCFGBuilder took 1229.44 ms. Allocated memory was 202.9 MB in the beginning and 233.3 MB in the end (delta: 30.4 MB). Free memory was 167.5 MB in the beginning and 196.9 MB in the end (delta: -29.4 MB). Peak memory consumption was 87.1 MB. Max. memory is 7.1 GB. [2020-07-21 10:35:35,726 INFO L168 Benchmark]: TraceAbstraction took 6167.76 ms. Allocated memory was 233.3 MB in the beginning and 293.6 MB in the end (delta: 60.3 MB). Free memory was 195.2 MB in the beginning and 87.1 MB in the end (delta: 108.1 MB). Peak memory consumption was 168.4 MB. Max. memory is 7.1 GB. [2020-07-21 10:35:35,733 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 137.4 MB. Free memory is still 118.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 693.96 ms. Allocated memory was 137.4 MB in the beginning and 202.9 MB in the end (delta: 65.5 MB). Free memory was 99.5 MB in the beginning and 171.6 MB in the end (delta: -72.1 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.69 ms. Allocated memory is still 202.9 MB. Free memory was 171.6 MB in the beginning and 167.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1229.44 ms. Allocated memory was 202.9 MB in the beginning and 233.3 MB in the end (delta: 30.4 MB). Free memory was 167.5 MB in the beginning and 196.9 MB in the end (delta: -29.4 MB). Peak memory consumption was 87.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6167.76 ms. Allocated memory was 233.3 MB in the beginning and 293.6 MB in the end (delta: 60.3 MB). Free memory was 195.2 MB in the beginning and 87.1 MB in the end (delta: 108.1 MB). Peak memory consumption was 168.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 383]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int waterLevel = 1; [L49] int methaneLevelCritical = 0; [L158] int pumpRunning = 0; [L159] int systemActive = 1; [L458] int cleanupTimeShifts = 4; [L752] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [\old(cleanupTimeShifts)=50, \old(head)=89, \old(head)=62, \old(methaneLevelCritical)=39, \old(pumpRunning)=43, \old(systemActive)=28, \old(waterLevel)=55, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L534] int retValue_acc ; [L535] 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] [L539] 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] [L540] 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] [L541] 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] [L975] int retValue_acc ; [L978] retValue_acc = 1 [L979] 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] [L541] 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] [L541] tmp = valid_product() [L543] 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] [L545] 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] [L546] 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] [L525] 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] [L390] int splverifierCounter ; [L391] int tmp ; [L392] int tmp___0 ; [L393] int tmp___1 ; [L394] int tmp___2 ; [L397] 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] [L399] 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] [L401] 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] [L407] tmp = __VERIFIER_nondet_int() [L409] 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] [L411] 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] [L66] COND TRUE waterLevel < 2 [L67] 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] [L411] 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] [L417] tmp___0 = __VERIFIER_nondet_int() [L419] 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] [L421] 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] [L78] COND FALSE !(\read(methaneLevelCritical)) [L81] 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] [L421] 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] [L427] tmp___2 = __VERIFIER_nondet_int() [L429] COND FALSE !(\read(tmp___2)) [L435] tmp___1 = __VERIFIER_nondet_int() [L437] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L446] 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] [L166] 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] [L173] 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] [L175] 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] [L221] 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] [L224] 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] [L239] 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] [L195] 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] [L198] 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] [L200] 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] [L318] int retValue_acc ; [L319] int tmp ; [L320] 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] [L324] 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] [L128] 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] [L131] COND FALSE !(waterLevel < 2) [L135] retValue_acc = 0 [L136] 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] [L324] 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] [L324] tmp = isHighWaterSensorDry() [L326] COND FALSE !(\read(tmp)) [L329] 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] [L331] retValue_acc = tmp___0 [L332] 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] [L200] 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] [L200] tmp = isHighWaterLevel() [L202] 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] [L204] 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] [L249] 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] [L204] 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] [L239] 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] [L175] 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] [L181] 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] [L558] int tmp ; [L559] 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] [L563] 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] [L87] int retValue_acc ; [L90] retValue_acc = methaneLevelCritical [L91] 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] [L563] 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] [L563] tmp = isMethaneLevelCritical() [L565] 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] [L567] 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] [L273] int retValue_acc ; [L276] retValue_acc = pumpRunning [L277] 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] [L567] 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] [L567] tmp___0 = isPumpRunning() [L569] 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] [L571] 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] [L383] __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, 245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1314 SDtfs, 400 SDslu, 2437 SDs, 0 SdLazy, 199 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 531 GetRequests, 507 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1171occurred 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, 39 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 622 NumberOfCodeBlocks, 622 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 526 ConstructedInterpolants, 0 QuantifiedInterpolants, 63886 SizeOfPredicates, 20 NumberOfNonLiveVariables, 5573 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...