/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 15:39:47,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 15:39:47,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 15:39:47,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 15:39:47,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 15:39:47,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 15:39:47,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 15:39:47,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 15:39:47,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 15:39:47,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 15:39:47,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 15:39:47,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 15:39:47,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 15:39:47,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 15:39:47,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 15:39:47,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 15:39:47,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 15:39:47,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 15:39:47,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 15:39:47,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 15:39:47,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 15:39:47,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 15:39:47,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 15:39:47,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 15:39:47,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 15:39:47,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 15:39:47,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 15:39:47,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 15:39:47,552 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 15:39:47,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 15:39:47,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 15:39:47,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 15:39:47,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 15:39:47,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 15:39:47,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 15:39:47,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 15:39:47,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 15:39:47,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 15:39:47,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 15:39:47,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 15:39:47,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 15:39:47,560 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 15:39:47,574 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 15:39:47,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 15:39:47,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 15:39:47,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 15:39:47,576 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 15:39:47,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 15:39:47,577 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 15:39:47,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 15:39:47,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 15:39:47,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 15:39:47,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 15:39:47,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 15:39:47,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 15:39:47,578 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 15:39:47,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 15:39:47,578 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 15:39:47,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 15:39:47,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 15:39:47,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 15:39:47,579 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 15:39:47,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 15:39:47,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:39:47,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 15:39:47,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 15:39:47,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 15:39:47,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 15:39:47,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:47,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 15:39:47,581 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 15:39:47,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 15:39:47,863 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 15:39:47,877 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 15:39:47,880 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 15:39:47,882 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 15:39:47,882 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 15:39:47,883 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-07-21 15:39:47,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36c62a7f8/cbd7afe182014090bf6095ca8c0626c1/FLAG188183122 [2020-07-21 15:39:48,508 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 15:39:48,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product49.cil.c [2020-07-21 15:39:48,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36c62a7f8/cbd7afe182014090bf6095ca8c0626c1/FLAG188183122 [2020-07-21 15:39:48,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36c62a7f8/cbd7afe182014090bf6095ca8c0626c1 [2020-07-21 15:39:48,746 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 15:39:48,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 15:39:48,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 15:39:48,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 15:39:48,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 15:39:48,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:39:48" (1/1) ... [2020-07-21 15:39:48,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f403a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:48, skipping insertion in model container [2020-07-21 15:39:48,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:39:48" (1/1) ... [2020-07-21 15:39:48,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 15:39:48,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 15:39:49,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:39:49,272 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 15:39:49,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:39:49,388 INFO L208 MainTranslator]: Completed translation [2020-07-21 15:39:49,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:49 WrapperNode [2020-07-21 15:39:49,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 15:39:49,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 15:39:49,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 15:39:49,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 15:39:49,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:49" (1/1) ... [2020-07-21 15:39:49,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:49" (1/1) ... [2020-07-21 15:39:49,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:49" (1/1) ... [2020-07-21 15:39:49,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:49" (1/1) ... [2020-07-21 15:39:49,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:49" (1/1) ... [2020-07-21 15:39:49,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:49" (1/1) ... [2020-07-21 15:39:49,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:49" (1/1) ... [2020-07-21 15:39:49,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 15:39:49,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 15:39:49,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 15:39:49,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 15:39:49,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:49" (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 15:39:49,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 15:39:49,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 15:39:49,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 15:39:49,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-21 15:39:49,546 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 15:39:49,547 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 15:39:49,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 15:39:49,547 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 15:39:49,547 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 15:39:49,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 15:39:49,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 15:39:49,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 15:39:49,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 15:39:49,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 15:39:49,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 15:39:49,550 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 15:39:49,550 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 15:39:49,551 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-21 15:39:49,551 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 15:39:49,552 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 15:39:49,552 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 15:39:49,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 15:39:49,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 15:39:49,553 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 15:39:49,554 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 15:39:49,555 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-21 15:39:49,556 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 15:39:49,556 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 15:39:49,556 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 15:39:49,556 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 15:39:49,557 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 15:39:49,557 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 15:39:49,557 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 15:39:49,558 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 15:39:49,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 15:39:49,558 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 15:39:49,558 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 15:39:49,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 15:39:49,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-21 15:39:49,558 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 15:39:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 15:39:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 15:39:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 15:39:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 15:39:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 15:39:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 15:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-21 15:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 15:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 15:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 15:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 15:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 15:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 15:39:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 15:39:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 15:39:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 15:39:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 15:39:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 15:39:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 15:39:49,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 15:39:49,564 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 15:39:49,564 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 15:39:49,564 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 15:39:49,564 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 15:39:49,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 15:39:49,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 15:39:49,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 15:39:49,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 15:39:49,565 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 15:39:49,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 15:39:49,565 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 15:39:49,565 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 15:39:49,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 15:39:49,566 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 15:39:49,566 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 15:39:49,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 15:39:49,566 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 15:39:49,567 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 15:39:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 15:39:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 15:39:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-21 15:39:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 15:39:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 15:39:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 15:39:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 15:39:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 15:39:49,568 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-21 15:39:49,569 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-21 15:39:49,569 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 15:39:49,569 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 15:39:49,569 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 15:39:49,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 15:39:49,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 15:39:49,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 15:39:50,593 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 15:39:50,595 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 15:39:50,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:39:50 BoogieIcfgContainer [2020-07-21 15:39:50,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 15:39:50,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 15:39:50,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 15:39:50,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 15:39:50,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:39:48" (1/3) ... [2020-07-21 15:39:50,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e09b2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:39:50, skipping insertion in model container [2020-07-21 15:39:50,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:49" (2/3) ... [2020-07-21 15:39:50,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e09b2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:39:50, skipping insertion in model container [2020-07-21 15:39:50,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:39:50" (3/3) ... [2020-07-21 15:39:50,610 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product49.cil.c [2020-07-21 15:39:50,622 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 15:39:50,631 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 15:39:50,646 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 15:39:50,673 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 15:39:50,674 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 15:39:50,674 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 15:39:50,674 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 15:39:50,674 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 15:39:50,674 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 15:39:50,675 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 15:39:50,675 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 15:39:50,698 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-07-21 15:39:50,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 15:39:50,708 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:50,709 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 15:39:50,710 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:50,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:50,716 INFO L82 PathProgramCache]: Analyzing trace with hash 922466731, now seen corresponding path program 1 times [2020-07-21 15:39:50,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:50,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41746277] [2020-07-21 15:39:50,727 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:51,088 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:51,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:51,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 15:39:51,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:51,139 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 15:39:51,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:51,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41746277] [2020-07-21 15:39:51,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:51,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 15:39:51,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424504557] [2020-07-21 15:39:51,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 15:39:51,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:51,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 15:39:51,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:39:51,172 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 2 states. [2020-07-21 15:39:51,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:51,218 INFO L93 Difference]: Finished difference Result 256 states and 317 transitions. [2020-07-21 15:39:51,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 15:39:51,219 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 15:39:51,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:51,234 INFO L225 Difference]: With dead ends: 256 [2020-07-21 15:39:51,234 INFO L226 Difference]: Without dead ends: 128 [2020-07-21 15:39:51,239 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 15:39:51,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-07-21 15:39:51,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-07-21 15:39:51,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-21 15:39:51,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-07-21 15:39:51,296 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 46 [2020-07-21 15:39:51,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:51,297 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-07-21 15:39:51,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 15:39:51,298 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-07-21 15:39:51,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 15:39:51,302 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:51,302 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 15:39:51,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:51,516 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:51,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:51,517 INFO L82 PathProgramCache]: Analyzing trace with hash 288176866, now seen corresponding path program 1 times [2020-07-21 15:39:51,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:51,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930864188] [2020-07-21 15:39:51,518 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:51,868 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:51,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:51,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 15:39:51,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:51,929 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 15:39:51,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:51,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930864188] [2020-07-21 15:39:51,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:51,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:39:51,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695778922] [2020-07-21 15:39:51,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:39:51,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:51,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:39:51,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:51,940 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 3 states. [2020-07-21 15:39:51,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:51,989 INFO L93 Difference]: Finished difference Result 232 states and 279 transitions. [2020-07-21 15:39:51,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:39:51,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 15:39:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:51,995 INFO L225 Difference]: With dead ends: 232 [2020-07-21 15:39:51,995 INFO L226 Difference]: Without dead ends: 128 [2020-07-21 15:39:51,998 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 15:39:52,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-07-21 15:39:52,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-07-21 15:39:52,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-07-21 15:39:52,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 149 transitions. [2020-07-21 15:39:52,034 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 149 transitions. Word has length 47 [2020-07-21 15:39:52,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:52,035 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 149 transitions. [2020-07-21 15:39:52,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:39:52,035 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 149 transitions. [2020-07-21 15:39:52,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-21 15:39:52,040 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:52,040 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] [2020-07-21 15:39:52,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:52,258 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:52,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:52,259 INFO L82 PathProgramCache]: Analyzing trace with hash 134398087, now seen corresponding path program 1 times [2020-07-21 15:39:52,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:52,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583086205] [2020-07-21 15:39:52,261 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:52,548 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:52,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:52,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 15:39:52,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:52,584 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 15:39:52,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:52,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583086205] [2020-07-21 15:39:52,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:52,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:39:52,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229458505] [2020-07-21 15:39:52,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:39:52,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:52,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:39:52,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:52,588 INFO L87 Difference]: Start difference. First operand 128 states and 149 transitions. Second operand 3 states. [2020-07-21 15:39:52,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:52,618 INFO L93 Difference]: Finished difference Result 205 states and 237 transitions. [2020-07-21 15:39:52,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:39:52,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-07-21 15:39:52,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:52,621 INFO L225 Difference]: With dead ends: 205 [2020-07-21 15:39:52,621 INFO L226 Difference]: Without dead ends: 119 [2020-07-21 15:39:52,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 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 15:39:52,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-07-21 15:39:52,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2020-07-21 15:39:52,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-07-21 15:39:52,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-07-21 15:39:52,641 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 60 [2020-07-21 15:39:52,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:52,641 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-07-21 15:39:52,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:39:52,641 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-07-21 15:39:52,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-21 15:39:52,647 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:52,648 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] [2020-07-21 15:39:52,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:52,863 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:52,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:52,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1182566725, now seen corresponding path program 1 times [2020-07-21 15:39:52,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:52,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803591825] [2020-07-21 15:39:52,865 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:53,212 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:53,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:53,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 15:39:53,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:53,270 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 15:39:53,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:53,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803591825] [2020-07-21 15:39:53,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:53,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:53,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520045570] [2020-07-21 15:39:53,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:53,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:53,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:53,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:53,273 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 6 states. [2020-07-21 15:39:53,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:53,476 INFO L93 Difference]: Finished difference Result 302 states and 360 transitions. [2020-07-21 15:39:53,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 15:39:53,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-07-21 15:39:53,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:53,480 INFO L225 Difference]: With dead ends: 302 [2020-07-21 15:39:53,481 INFO L226 Difference]: Without dead ends: 207 [2020-07-21 15:39:53,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 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 15:39:53,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-07-21 15:39:53,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2020-07-21 15:39:53,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-07-21 15:39:53,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 240 transitions. [2020-07-21 15:39:53,505 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 240 transitions. Word has length 64 [2020-07-21 15:39:53,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:53,505 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 240 transitions. [2020-07-21 15:39:53,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:53,505 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 240 transitions. [2020-07-21 15:39:53,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-07-21 15:39:53,507 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:53,507 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] [2020-07-21 15:39:53,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:53,721 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:53,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:53,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1990374153, now seen corresponding path program 1 times [2020-07-21 15:39:53,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:53,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480989260] [2020-07-21 15:39:53,722 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:53,997 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:53,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:54,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 15:39:54,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:54,040 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 15:39:54,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:54,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480989260] [2020-07-21 15:39:54,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:54,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:54,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429613377] [2020-07-21 15:39:54,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:54,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:54,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:54,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:54,043 INFO L87 Difference]: Start difference. First operand 205 states and 240 transitions. Second operand 6 states. [2020-07-21 15:39:54,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:54,617 INFO L93 Difference]: Finished difference Result 529 states and 649 transitions. [2020-07-21 15:39:54,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 15:39:54,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-07-21 15:39:54,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:54,625 INFO L225 Difference]: With dead ends: 529 [2020-07-21 15:39:54,625 INFO L226 Difference]: Without dead ends: 348 [2020-07-21 15:39:54,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 15:39:54,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-07-21 15:39:54,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 321. [2020-07-21 15:39:54,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-07-21 15:39:54,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 364 transitions. [2020-07-21 15:39:54,667 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 364 transitions. Word has length 68 [2020-07-21 15:39:54,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:54,668 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 364 transitions. [2020-07-21 15:39:54,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:54,668 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 364 transitions. [2020-07-21 15:39:54,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-21 15:39:54,672 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:54,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:54,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:54,887 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:54,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:54,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1032148237, now seen corresponding path program 1 times [2020-07-21 15:39:54,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:54,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460123792] [2020-07-21 15:39:54,888 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:55,127 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:55,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:55,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:39:55,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:55,172 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 15:39:55,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:55,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460123792] [2020-07-21 15:39:55,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:55,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:55,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095603800] [2020-07-21 15:39:55,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:55,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:55,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:55,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:55,176 INFO L87 Difference]: Start difference. First operand 321 states and 364 transitions. Second operand 6 states. [2020-07-21 15:39:55,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:55,431 INFO L93 Difference]: Finished difference Result 328 states and 372 transitions. [2020-07-21 15:39:55,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 15:39:55,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-07-21 15:39:55,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:55,437 INFO L225 Difference]: With dead ends: 328 [2020-07-21 15:39:55,437 INFO L226 Difference]: Without dead ends: 325 [2020-07-21 15:39:55,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 77 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 15:39:55,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-07-21 15:39:55,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 321. [2020-07-21 15:39:55,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-07-21 15:39:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 363 transitions. [2020-07-21 15:39:55,485 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 363 transitions. Word has length 82 [2020-07-21 15:39:55,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:55,485 INFO L479 AbstractCegarLoop]: Abstraction has 321 states and 363 transitions. [2020-07-21 15:39:55,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:55,486 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 363 transitions. [2020-07-21 15:39:55,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-21 15:39:55,489 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:55,489 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] [2020-07-21 15:39:55,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:55,704 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:55,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:55,705 INFO L82 PathProgramCache]: Analyzing trace with hash 2065507240, now seen corresponding path program 1 times [2020-07-21 15:39:55,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:55,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010893633] [2020-07-21 15:39:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:56,001 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:56,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:56,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:39:56,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:56,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:56,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010893633] [2020-07-21 15:39:56,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:56,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:56,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240224751] [2020-07-21 15:39:56,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:56,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:56,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:56,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:56,044 INFO L87 Difference]: Start difference. First operand 321 states and 363 transitions. Second operand 6 states. [2020-07-21 15:39:56,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:56,085 INFO L93 Difference]: Finished difference Result 628 states and 720 transitions. [2020-07-21 15:39:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:39:56,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-07-21 15:39:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:56,088 INFO L225 Difference]: With dead ends: 628 [2020-07-21 15:39:56,088 INFO L226 Difference]: Without dead ends: 331 [2020-07-21 15:39:56,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 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 15:39:56,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-07-21 15:39:56,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2020-07-21 15:39:56,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-07-21 15:39:56,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 373 transitions. [2020-07-21 15:39:56,109 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 373 transitions. Word has length 83 [2020-07-21 15:39:56,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:56,110 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 373 transitions. [2020-07-21 15:39:56,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:56,110 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 373 transitions. [2020-07-21 15:39:56,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-21 15:39:56,111 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:56,111 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] [2020-07-21 15:39:56,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:56,325 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:56,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:56,326 INFO L82 PathProgramCache]: Analyzing trace with hash 2088139494, now seen corresponding path program 1 times [2020-07-21 15:39:56,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:56,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293525606] [2020-07-21 15:39:56,327 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:56,495 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:39:56,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:56,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 15:39:56,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:56,536 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 15:39:56,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:56,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293525606] [2020-07-21 15:39:56,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:56,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 15:39:56,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638524340] [2020-07-21 15:39:56,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 15:39:56,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:56,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 15:39:56,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:39:56,540 INFO L87 Difference]: Start difference. First operand 331 states and 373 transitions. Second operand 5 states. [2020-07-21 15:39:56,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:56,571 INFO L93 Difference]: Finished difference Result 652 states and 752 transitions. [2020-07-21 15:39:56,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 15:39:56,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-07-21 15:39:56,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:56,574 INFO L225 Difference]: With dead ends: 652 [2020-07-21 15:39:56,574 INFO L226 Difference]: Without dead ends: 345 [2020-07-21 15:39:56,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 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 15:39:56,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-07-21 15:39:56,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 339. [2020-07-21 15:39:56,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-07-21 15:39:56,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 381 transitions. [2020-07-21 15:39:56,598 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 381 transitions. Word has length 83 [2020-07-21 15:39:56,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:56,598 INFO L479 AbstractCegarLoop]: Abstraction has 339 states and 381 transitions. [2020-07-21 15:39:56,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 15:39:56,598 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 381 transitions. [2020-07-21 15:39:56,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-21 15:39:56,600 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:56,600 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] [2020-07-21 15:39:56,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:56,813 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:56,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:56,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1181335803, now seen corresponding path program 1 times [2020-07-21 15:39:56,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:56,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124435213] [2020-07-21 15:39:56,815 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:57,050 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:57,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:57,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 15:39:57,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:57,090 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 15:39:57,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:57,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124435213] [2020-07-21 15:39:57,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:57,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:39:57,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575985443] [2020-07-21 15:39:57,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:39:57,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:57,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:39:57,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:57,092 INFO L87 Difference]: Start difference. First operand 339 states and 381 transitions. Second operand 3 states. [2020-07-21 15:39:57,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:57,132 INFO L93 Difference]: Finished difference Result 913 states and 1075 transitions. [2020-07-21 15:39:57,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:39:57,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-07-21 15:39:57,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:57,136 INFO L225 Difference]: With dead ends: 913 [2020-07-21 15:39:57,136 INFO L226 Difference]: Without dead ends: 598 [2020-07-21 15:39:57,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 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 15:39:57,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-07-21 15:39:57,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 595. [2020-07-21 15:39:57,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-07-21 15:39:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 688 transitions. [2020-07-21 15:39:57,172 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 688 transitions. Word has length 83 [2020-07-21 15:39:57,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:57,173 INFO L479 AbstractCegarLoop]: Abstraction has 595 states and 688 transitions. [2020-07-21 15:39:57,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:39:57,173 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 688 transitions. [2020-07-21 15:39:57,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-07-21 15:39:57,175 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:57,175 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] [2020-07-21 15:39:57,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:57,391 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:57,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:57,392 INFO L82 PathProgramCache]: Analyzing trace with hash -765720469, now seen corresponding path program 1 times [2020-07-21 15:39:57,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:57,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009664849] [2020-07-21 15:39:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:57,694 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:57,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 15:39:57,695 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:39:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 15:39:57,791 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:39:58,114 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 15:39:58,114 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 15:39:58,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:58,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:39:58 BoogieIcfgContainer [2020-07-21 15:39:58,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 15:39:58,494 INFO L168 Benchmark]: Toolchain (without parser) took 9745.24 ms. Allocated memory was 136.8 MB in the beginning and 331.4 MB in the end (delta: 194.5 MB). Free memory was 99.4 MB in the beginning and 147.0 MB in the end (delta: -47.5 MB). Peak memory consumption was 147.0 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:58,494 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 15:39:58,495 INFO L168 Benchmark]: CACSL2BoogieTranslator took 639.24 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 99.0 MB in the beginning and 170.4 MB in the end (delta: -71.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:58,496 INFO L168 Benchmark]: Boogie Preprocessor took 85.90 ms. Allocated memory is still 201.9 MB. Free memory was 170.4 MB in the beginning and 166.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:58,497 INFO L168 Benchmark]: RCFGBuilder took 1126.18 ms. Allocated memory was 201.9 MB in the beginning and 232.3 MB in the end (delta: 30.4 MB). Free memory was 166.0 MB in the beginning and 194.4 MB in the end (delta: -28.4 MB). Peak memory consumption was 86.7 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:58,498 INFO L168 Benchmark]: TraceAbstraction took 7888.11 ms. Allocated memory was 232.3 MB in the beginning and 331.4 MB in the end (delta: 99.1 MB). Free memory was 194.4 MB in the beginning and 147.0 MB in the end (delta: 47.4 MB). Peak memory consumption was 146.5 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:58,501 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory was 118.7 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 639.24 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 99.0 MB in the beginning and 170.4 MB in the end (delta: -71.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.90 ms. Allocated memory is still 201.9 MB. Free memory was 170.4 MB in the beginning and 166.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1126.18 ms. Allocated memory was 201.9 MB in the beginning and 232.3 MB in the end (delta: 30.4 MB). Free memory was 166.0 MB in the beginning and 194.4 MB in the end (delta: -28.4 MB). Peak memory consumption was 86.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7888.11 ms. Allocated memory was 232.3 MB in the beginning and 331.4 MB in the end (delta: 99.1 MB). Free memory was 194.4 MB in the beginning and 147.0 MB in the end (delta: 47.4 MB). Peak memory consumption was 146.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 950]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] int cleanupTimeShifts = 4; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int pumpRunning = 0; [L546] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=96, \old(head)=56, \old(head)=34, \old(methaneLevelCritical)=66, \old(pumpRunning)=40, \old(systemActive)=36, \old(waterLevel)=35, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L150] int retValue_acc ; [L151] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L155] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L156] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L157] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L833] int retValue_acc ; [L836] retValue_acc = 1 [L837] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L157] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L157] tmp = valid_product() [L159] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L161] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L162] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L141] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L743] int splverifierCounter ; [L744] int tmp ; [L745] int tmp___0 ; [L746] int tmp___1 ; [L747] int tmp___2 ; [L750] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L752] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L754] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L760] tmp = __VERIFIER_nondet_int() [L762] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L764] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L861] COND TRUE waterLevel < 2 [L862] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L764] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L770] tmp___0 = __VERIFIER_nondet_int() [L772] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=-1, waterLevel=2] [L774] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L774] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=-1, waterLevel=2] [L780] tmp___2 = __VERIFIER_nondet_int() [L782] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=-1, tmp___2=1, waterLevel=2] [L795] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L552] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L559] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L561] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L607] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L610] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L625] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L581] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L584] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L586] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L704] int retValue_acc ; [L705] int tmp ; [L706] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L710] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L923] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L710] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L710] tmp = isHighWaterSensorDry() [L712] COND FALSE !(\read(tmp)) [L715] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L717] retValue_acc = tmp___0 [L718] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \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] [L586] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L586] tmp = isHighWaterLevel() [L588] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L590] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L635] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L590] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L625] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L561] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L567] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L44] int tmp ; [L45] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L49] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L49] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L53] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L659] int retValue_acc ; [L662] retValue_acc = pumpRunning [L663] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L53] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L57] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L950] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 235 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1356 SDtfs, 622 SDslu, 2220 SDs, 0 SdLazy, 466 SolverSat, 137 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 614 GetRequests, 585 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=595occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 42 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 703 NumberOfCodeBlocks, 662 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 70902 SizeOfPredicates, 17 NumberOfNonLiveVariables, 6062 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...