/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:50:25,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:50:25,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:50:25,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:50:25,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:50:25,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:50:25,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:50:25,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:50:25,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:50:25,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:50:25,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:50:25,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:50:25,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:50:25,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:50:25,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:50:25,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:50:25,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:50:25,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:50:25,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:50:25,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:50:25,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:50:25,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:50:25,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:50:25,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:50:25,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 12:50:25,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 12:50:25,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 12:50:25,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 12:50:25,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 12:50:25,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 12:50:25,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 12:50:25,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 12:50:25,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 12:50:25,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 12:50:25,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 12:50:25,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 12:50:25,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 12:50:25,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 12:50:25,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:50:25,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:50:25,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:50:25,543 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 12:50:25,558 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:50:25,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:50:25,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:50:25,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:50:25,560 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:50:25,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:50:25,560 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:50:25,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:50:25,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:50:25,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:50:25,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:50:25,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:50:25,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:50:25,562 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:50:25,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:50:25,562 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:50:25,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:50:25,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:50:25,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:50:25,563 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:50:25,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:50:25,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:50:25,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:50:25,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:50:25,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:50:25,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:50:25,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:25,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:50:25,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:50:25,565 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 12:50:25,854 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:50:25,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:50:25,872 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:50:25,873 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:50:25,874 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:50:25,874 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-07-21 12:50:25,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11d57456c/b61f450311ac44fea4cbedea31a275b5/FLAGe182d1e71 [2020-07-21 12:50:26,511 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:50:26,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-07-21 12:50:26,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11d57456c/b61f450311ac44fea4cbedea31a275b5/FLAGe182d1e71 [2020-07-21 12:50:26,818 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11d57456c/b61f450311ac44fea4cbedea31a275b5 [2020-07-21 12:50:26,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:50:26,832 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:50:26,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:50:26,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:50:26,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:50:26,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:50:26" (1/1) ... [2020-07-21 12:50:26,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a8e4f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:26, skipping insertion in model container [2020-07-21 12:50:26,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:50:26" (1/1) ... [2020-07-21 12:50:26,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:50:26,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:50:27,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:50:27,387 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:50:27,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:50:27,544 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:50:27,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27 WrapperNode [2020-07-21 12:50:27,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:50:27,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:50:27,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:50:27,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:50:27,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27" (1/1) ... [2020-07-21 12:50:27,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27" (1/1) ... [2020-07-21 12:50:27,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27" (1/1) ... [2020-07-21 12:50:27,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27" (1/1) ... [2020-07-21 12:50:27,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27" (1/1) ... [2020-07-21 12:50:27,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27" (1/1) ... [2020-07-21 12:50:27,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27" (1/1) ... [2020-07-21 12:50:27,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:50:27,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:50:27,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:50:27,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:50:27,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:50:27,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:50:27,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:50:27,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 12:50:27,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 12:50:27,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 12:50:27,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 12:50:27,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 12:50:27,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 12:50:27,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 12:50:27,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 12:50:27,709 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 12:50:27,709 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 12:50:27,709 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 12:50:27,709 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 12:50:27,709 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 12:50:27,709 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 12:50:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 12:50:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 12:50:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 12:50:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 12:50:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 12:50:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 12:50:27,711 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 12:50:27,711 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 12:50:27,711 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 12:50:27,711 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 12:50:27,711 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 12:50:27,711 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 12:50:27,712 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:50:27,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-21 12:50:27,712 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 12:50:27,712 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 12:50:27,712 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 12:50:27,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 12:50:27,713 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 12:50:27,713 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 12:50:27,713 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 12:50:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:50:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 12:50:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 12:50:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 12:50:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 12:50:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 12:50:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 12:50:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 12:50:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 12:50:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 12:50:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 12:50:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 12:50:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 12:50:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 12:50:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 12:50:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 12:50:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 12:50:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 12:50:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 12:50:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 12:50:27,716 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 12:50:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 12:50:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 12:50:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 12:50:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 12:50:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 12:50:27,717 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 12:50:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 12:50:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 12:50:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 12:50:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-21 12:50:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 12:50:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 12:50:27,718 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 12:50:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 12:50:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 12:50:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 12:50:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 12:50:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 12:50:27,719 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 12:50:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 12:50:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 12:50:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 12:50:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 12:50:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 12:50:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 12:50:27,720 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:50:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 12:50:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:50:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 12:50:27,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:50:28,849 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:50:28,849 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 12:50:28,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:50:28 BoogieIcfgContainer [2020-07-21 12:50:28,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:50:28,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:50:28,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:50:28,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:50:28,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:50:26" (1/3) ... [2020-07-21 12:50:28,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ba0efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:50:28, skipping insertion in model container [2020-07-21 12:50:28,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:27" (2/3) ... [2020-07-21 12:50:28,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ba0efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:50:28, skipping insertion in model container [2020-07-21 12:50:28,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:50:28" (3/3) ... [2020-07-21 12:50:28,863 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product33.cil.c [2020-07-21 12:50:28,873 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:50:28,882 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:50:28,896 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:50:28,920 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:50:28,921 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:50:28,921 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:50:28,921 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:50:28,922 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:50:28,922 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:50:28,922 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:50:28,922 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:50:28,945 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states. [2020-07-21 12:50:28,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 12:50:28,956 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:28,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:28,958 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:28,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:28,965 INFO L82 PathProgramCache]: Analyzing trace with hash 936709255, now seen corresponding path program 1 times [2020-07-21 12:50:28,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:28,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903920781] [2020-07-21 12:50:28,976 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:29,370 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:29,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:29,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 12:50:29,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:29,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:29,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:29,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903920781] [2020-07-21 12:50:29,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:29,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 12:50:29,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998922712] [2020-07-21 12:50:29,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 12:50:29,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:29,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 12:50:29,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:50:29,441 INFO L87 Difference]: Start difference. First operand 151 states. Second operand 2 states. [2020-07-21 12:50:29,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:29,480 INFO L93 Difference]: Finished difference Result 210 states and 263 transitions. [2020-07-21 12:50:29,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 12:50:29,481 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 12:50:29,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:29,494 INFO L225 Difference]: With dead ends: 210 [2020-07-21 12:50:29,494 INFO L226 Difference]: Without dead ends: 105 [2020-07-21 12:50:29,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:50:29,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-21 12:50:29,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-07-21 12:50:29,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-21 12:50:29,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-07-21 12:50:29,547 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 46 [2020-07-21 12:50:29,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:29,547 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-07-21 12:50:29,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 12:50:29,548 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-07-21 12:50:29,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 12:50:29,551 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:29,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:29,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:29,765 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:29,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:29,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1814743517, now seen corresponding path program 1 times [2020-07-21 12:50:29,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:29,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465656830] [2020-07-21 12:50:29,768 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:30,140 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:30,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:30,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:50:30,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:30,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:30,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:30,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465656830] [2020-07-21 12:50:30,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:30,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:30,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185770465] [2020-07-21 12:50:30,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:30,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:30,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:30,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:30,220 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 3 states. [2020-07-21 12:50:30,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:30,257 INFO L93 Difference]: Finished difference Result 186 states and 225 transitions. [2020-07-21 12:50:30,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:30,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 12:50:30,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:30,261 INFO L225 Difference]: With dead ends: 186 [2020-07-21 12:50:30,262 INFO L226 Difference]: Without dead ends: 105 [2020-07-21 12:50:30,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:30,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-21 12:50:30,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-07-21 12:50:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-21 12:50:30,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 122 transitions. [2020-07-21 12:50:30,294 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 122 transitions. Word has length 47 [2020-07-21 12:50:30,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:30,294 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 122 transitions. [2020-07-21 12:50:30,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:30,295 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 122 transitions. [2020-07-21 12:50:30,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-21 12:50:30,301 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:30,302 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:30,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:30,506 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:30,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:30,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1366147412, now seen corresponding path program 1 times [2020-07-21 12:50:30,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:30,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195756637] [2020-07-21 12:50:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:30,834 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:30,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:30,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:50:30,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:30,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:30,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:30,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195756637] [2020-07-21 12:50:30,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:30,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:30,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445686919] [2020-07-21 12:50:30,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:30,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:30,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:30,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:30,862 INFO L87 Difference]: Start difference. First operand 105 states and 122 transitions. Second operand 3 states. [2020-07-21 12:50:30,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:30,886 INFO L93 Difference]: Finished difference Result 159 states and 183 transitions. [2020-07-21 12:50:30,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:30,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-07-21 12:50:30,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:30,889 INFO L225 Difference]: With dead ends: 159 [2020-07-21 12:50:30,889 INFO L226 Difference]: Without dead ends: 96 [2020-07-21 12:50:30,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:30,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-07-21 12:50:30,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-07-21 12:50:30,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-07-21 12:50:30,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-07-21 12:50:30,909 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 55 [2020-07-21 12:50:30,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:30,910 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-07-21 12:50:30,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:30,910 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-07-21 12:50:30,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-21 12:50:30,917 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:30,917 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] [2020-07-21 12:50:31,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:31,118 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:31,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:31,119 INFO L82 PathProgramCache]: Analyzing trace with hash -169231603, now seen corresponding path program 1 times [2020-07-21 12:50:31,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:31,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954588543] [2020-07-21 12:50:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:31,446 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:31,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:31,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 12:50:31,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:31,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:31,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954588543] [2020-07-21 12:50:31,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:31,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:31,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575687075] [2020-07-21 12:50:31,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:31,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:31,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:31,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:31,523 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 6 states. [2020-07-21 12:50:31,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:31,955 INFO L93 Difference]: Finished difference Result 221 states and 262 transitions. [2020-07-21 12:50:31,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:50:31,956 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-07-21 12:50:31,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:31,958 INFO L225 Difference]: With dead ends: 221 [2020-07-21 12:50:31,958 INFO L226 Difference]: Without dead ends: 149 [2020-07-21 12:50:31,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 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 12:50:31,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-07-21 12:50:31,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2020-07-21 12:50:31,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-07-21 12:50:31,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 166 transitions. [2020-07-21 12:50:31,977 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 166 transitions. Word has length 59 [2020-07-21 12:50:31,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:31,978 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 166 transitions. [2020-07-21 12:50:31,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:31,979 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 166 transitions. [2020-07-21 12:50:31,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-07-21 12:50:31,980 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:31,980 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] [2020-07-21 12:50:32,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:32,199 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:32,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:32,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1300839735, now seen corresponding path program 1 times [2020-07-21 12:50:32,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:32,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930602556] [2020-07-21 12:50:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:32,483 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:32,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:32,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 12:50:32,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:32,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:32,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930602556] [2020-07-21 12:50:32,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:32,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:32,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290759234] [2020-07-21 12:50:32,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:32,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:32,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:32,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:32,535 INFO L87 Difference]: Start difference. First operand 146 states and 166 transitions. Second operand 6 states. [2020-07-21 12:50:32,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:32,735 INFO L93 Difference]: Finished difference Result 379 states and 449 transitions. [2020-07-21 12:50:32,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:50:32,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-07-21 12:50:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:32,740 INFO L225 Difference]: With dead ends: 379 [2020-07-21 12:50:32,740 INFO L226 Difference]: Without dead ends: 257 [2020-07-21 12:50:32,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:50:32,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-07-21 12:50:32,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 253. [2020-07-21 12:50:32,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-07-21 12:50:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 290 transitions. [2020-07-21 12:50:32,770 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 290 transitions. Word has length 73 [2020-07-21 12:50:32,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:32,771 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 290 transitions. [2020-07-21 12:50:32,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:32,771 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 290 transitions. [2020-07-21 12:50:32,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-07-21 12:50:32,772 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:32,772 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] [2020-07-21 12:50:32,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:32,986 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:32,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:32,987 INFO L82 PathProgramCache]: Analyzing trace with hash 2135215483, now seen corresponding path program 1 times [2020-07-21 12:50:32,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:32,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717493157] [2020-07-21 12:50:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:33,261 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:33,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:33,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 12:50:33,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:33,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:33,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:33,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717493157] [2020-07-21 12:50:33,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:33,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:33,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069818751] [2020-07-21 12:50:33,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:33,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:33,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:33,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:33,301 INFO L87 Difference]: Start difference. First operand 253 states and 290 transitions. Second operand 6 states. [2020-07-21 12:50:33,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:33,488 INFO L93 Difference]: Finished difference Result 260 states and 297 transitions. [2020-07-21 12:50:33,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:50:33,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-07-21 12:50:33,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:33,494 INFO L225 Difference]: With dead ends: 260 [2020-07-21 12:50:33,494 INFO L226 Difference]: Without dead ends: 257 [2020-07-21 12:50:33,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:50:33,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-07-21 12:50:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 253. [2020-07-21 12:50:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-07-21 12:50:33,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 289 transitions. [2020-07-21 12:50:33,542 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 289 transitions. Word has length 77 [2020-07-21 12:50:33,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:33,542 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 289 transitions. [2020-07-21 12:50:33,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:33,543 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 289 transitions. [2020-07-21 12:50:33,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-21 12:50:33,544 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:33,544 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] [2020-07-21 12:50:33,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:33,745 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:33,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:33,746 INFO L82 PathProgramCache]: Analyzing trace with hash 2125508241, now seen corresponding path program 1 times [2020-07-21 12:50:33,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:33,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619844684] [2020-07-21 12:50:33,748 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:34,067 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:34,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:34,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 12:50:34,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:34,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:34,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:34,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619844684] [2020-07-21 12:50:34,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:34,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:34,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684658159] [2020-07-21 12:50:34,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:34,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:34,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:34,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:34,141 INFO L87 Difference]: Start difference. First operand 253 states and 289 transitions. Second operand 6 states. [2020-07-21 12:50:34,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:34,187 INFO L93 Difference]: Finished difference Result 378 states and 433 transitions. [2020-07-21 12:50:34,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 12:50:34,187 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-07-21 12:50:34,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:34,190 INFO L225 Difference]: With dead ends: 378 [2020-07-21 12:50:34,190 INFO L226 Difference]: Without dead ends: 263 [2020-07-21 12:50:34,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 12:50:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-07-21 12:50:34,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2020-07-21 12:50:34,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-07-21 12:50:34,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 299 transitions. [2020-07-21 12:50:34,209 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 299 transitions. Word has length 78 [2020-07-21 12:50:34,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:34,210 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 299 transitions. [2020-07-21 12:50:34,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:34,210 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 299 transitions. [2020-07-21 12:50:34,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-21 12:50:34,211 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:34,211 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] [2020-07-21 12:50:34,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:34,419 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:34,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:34,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1616035151, now seen corresponding path program 1 times [2020-07-21 12:50:34,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:34,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137432414] [2020-07-21 12:50:34,421 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:34,660 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:34,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:34,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 12:50:34,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:34,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:34,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137432414] [2020-07-21 12:50:34,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:34,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 12:50:34,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999551000] [2020-07-21 12:50:34,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 12:50:34,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:34,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 12:50:34,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:50:34,707 INFO L87 Difference]: Start difference. First operand 263 states and 299 transitions. Second operand 5 states. [2020-07-21 12:50:34,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:34,755 INFO L93 Difference]: Finished difference Result 516 states and 600 transitions. [2020-07-21 12:50:34,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 12:50:34,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-07-21 12:50:34,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:34,760 INFO L225 Difference]: With dead ends: 516 [2020-07-21 12:50:34,761 INFO L226 Difference]: Without dead ends: 277 [2020-07-21 12:50:34,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:50:34,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-07-21 12:50:34,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 271. [2020-07-21 12:50:34,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-07-21 12:50:34,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 307 transitions. [2020-07-21 12:50:34,791 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 307 transitions. Word has length 78 [2020-07-21 12:50:34,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:34,791 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 307 transitions. [2020-07-21 12:50:34,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 12:50:34,792 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 307 transitions. [2020-07-21 12:50:34,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-21 12:50:34,797 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:34,798 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] [2020-07-21 12:50:35,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:35,012 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:35,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:35,012 INFO L82 PathProgramCache]: Analyzing trace with hash -394068690, now seen corresponding path program 1 times [2020-07-21 12:50:35,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:35,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466659719] [2020-07-21 12:50:35,013 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:35,246 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:35,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:35,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 12:50:35,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:35,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:35,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:35,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466659719] [2020-07-21 12:50:35,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:35,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:35,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072886375] [2020-07-21 12:50:35,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:35,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:35,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:35,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:35,290 INFO L87 Difference]: Start difference. First operand 271 states and 307 transitions. Second operand 3 states. [2020-07-21 12:50:35,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:35,332 INFO L93 Difference]: Finished difference Result 713 states and 849 transitions. [2020-07-21 12:50:35,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:35,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-07-21 12:50:35,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:35,338 INFO L225 Difference]: With dead ends: 713 [2020-07-21 12:50:35,339 INFO L226 Difference]: Without dead ends: 466 [2020-07-21 12:50:35,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:35,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-07-21 12:50:35,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 463. [2020-07-21 12:50:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-07-21 12:50:35,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 540 transitions. [2020-07-21 12:50:35,403 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 540 transitions. Word has length 78 [2020-07-21 12:50:35,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:35,403 INFO L479 AbstractCegarLoop]: Abstraction has 463 states and 540 transitions. [2020-07-21 12:50:35,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:35,404 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 540 transitions. [2020-07-21 12:50:35,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-21 12:50:35,405 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:35,406 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 12:50:35,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:35,619 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:35,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:35,620 INFO L82 PathProgramCache]: Analyzing trace with hash 823271752, now seen corresponding path program 1 times [2020-07-21 12:50:35,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:35,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541367731] [2020-07-21 12:50:35,621 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 12:50:35,907 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:35,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 12:50:35,908 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:50:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 12:50:35,995 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:50:36,218 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 12:50:36,218 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 12:50:36,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:36,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:50:36 BoogieIcfgContainer [2020-07-21 12:50:36,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 12:50:36,610 INFO L168 Benchmark]: Toolchain (without parser) took 9777.81 ms. Allocated memory was 137.4 MB in the beginning and 327.7 MB in the end (delta: 190.3 MB). Free memory was 101.3 MB in the beginning and 190.1 MB in the end (delta: -88.8 MB). Peak memory consumption was 101.5 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:36,611 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 12:50:36,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.74 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 171.8 MB in the end (delta: -70.9 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:36,613 INFO L168 Benchmark]: Boogie Preprocessor took 96.24 ms. Allocated memory is still 201.9 MB. Free memory was 171.8 MB in the beginning and 168.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:36,616 INFO L168 Benchmark]: RCFGBuilder took 1212.79 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 168.3 MB in the beginning and 200.7 MB in the end (delta: -32.4 MB). Peak memory consumption was 88.4 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:36,620 INFO L168 Benchmark]: TraceAbstraction took 7750.63 ms. Allocated memory was 232.8 MB in the beginning and 327.7 MB in the end (delta: 94.9 MB). Free memory was 199.2 MB in the beginning and 190.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 104.0 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:36,627 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 711.74 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 171.8 MB in the end (delta: -70.9 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.24 ms. Allocated memory is still 201.9 MB. Free memory was 171.8 MB in the beginning and 168.3 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1212.79 ms. Allocated memory was 201.9 MB in the beginning and 232.8 MB in the end (delta: 30.9 MB). Free memory was 168.3 MB in the beginning and 200.7 MB in the end (delta: -32.4 MB). Peak memory consumption was 88.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7750.63 ms. Allocated memory was 232.8 MB in the beginning and 327.7 MB in the end (delta: 94.9 MB). Free memory was 199.2 MB in the beginning and 190.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 104.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 410]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L424] int pumpRunning = 0; [L425] int systemActive = 1; [L683] int cleanupTimeShifts = 4; [L806] int waterLevel = 1; [L807] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=61, \old(head)=42, \old(head)=65, \old(methaneLevelCritical)=31, \old(pumpRunning)=29, \old(systemActive)=70, \old(waterLevel)=38, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L756] int retValue_acc ; [L757] 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] [L761] 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] [L762] 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] [L763] 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] [L674] int retValue_acc ; [L677] retValue_acc = 1 [L678] 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] [L763] 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] [L763] tmp = valid_product() [L765] 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] [L767] 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] [L768] 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] [L750] 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] [L581] int splverifierCounter ; [L582] int tmp ; [L583] int tmp___0 ; [L584] int tmp___1 ; [L585] int tmp___2 ; [L588] 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] [L590] 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] [L592] 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] [L598] tmp = __VERIFIER_nondet_int() [L600] 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] [L602] 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] [L824] COND TRUE waterLevel < 2 [L825] 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] [L602] 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] [L608] tmp___0 = __VERIFIER_nondet_int() [L610] 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] [L612] 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] [L836] COND FALSE !(\read(methaneLevelCritical)) [L839] 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] [L612] 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] [L618] tmp___2 = __VERIFIER_nondet_int() [L620] 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] [L633] 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] [L432] 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] [L439] 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] [L441] 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] [L461] 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] [L464] 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] [L466] 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] [L558] int retValue_acc ; [L559] int tmp ; [L560] 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] [L564] 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] [L886] 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] [L889] COND FALSE !(waterLevel < 2) [L893] retValue_acc = 0 [L894] 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] [L564] 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] [L564] tmp = isHighWaterSensorDry() [L566] COND FALSE !(\read(tmp)) [L569] 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] [L571] retValue_acc = tmp___0 [L572] 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] [L466] 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] [L466] tmp = isHighWaterLevel() [L468] 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] [L470] 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] [L489] 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] [L470] 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] [L441] 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] [L447] 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] [L780] int tmp ; [L781] 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] [L785] 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] [L845] int retValue_acc ; [L848] retValue_acc = methaneLevelCritical [L849] 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] [L785] 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] [L785] tmp = isMethaneLevelCritical() [L787] 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] [L789] 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] [L513] int retValue_acc ; [L516] retValue_acc = pumpRunning [L517] 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] [L789] 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] [L789] tmp___0 = isPumpRunning() [L791] 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] [L793] 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] [L410] __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 37 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1085 SDtfs, 496 SDslu, 1704 SDs, 0 SdLazy, 315 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 589 GetRequests, 560 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=463occurred 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, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 673 NumberOfCodeBlocks, 673 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 582 ConstructedInterpolants, 0 QuantifiedInterpolants, 67670 SizeOfPredicates, 17 NumberOfNonLiveVariables, 6101 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...