/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 15:42:33,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 15:42:33,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 15:42:33,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 15:42:33,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 15:42:33,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 15:42:33,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 15:42:33,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 15:42:33,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 15:42:33,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 15:42:33,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 15:42:33,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 15:42:33,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 15:42:33,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 15:42:33,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 15:42:33,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 15:42:33,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 15:42:33,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 15:42:33,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 15:42:33,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 15:42:33,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 15:42:33,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 15:42:33,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 15:42:33,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 15:42:33,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 15:42:33,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 15:42:33,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 15:42:33,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 15:42:33,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 15:42:33,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 15:42:33,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 15:42:33,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 15:42:33,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 15:42:33,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 15:42:33,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 15:42:33,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 15:42:33,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 15:42:33,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 15:42:33,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 15:42:33,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 15:42:33,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 15:42:33,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 15:42:33,622 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 15:42:33,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 15:42:33,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 15:42:33,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 15:42:33,624 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 15:42:33,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 15:42:33,625 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 15:42:33,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 15:42:33,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 15:42:33,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 15:42:33,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 15:42:33,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 15:42:33,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 15:42:33,626 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 15:42:33,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 15:42:33,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 15:42:33,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 15:42:33,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 15:42:33,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 15:42:33,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 15:42:33,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 15:42:33,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:42:33,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 15:42:33,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 15:42:33,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 15:42:33,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 15:42:33,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:33,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 15:42:33,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 15:42:33,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 15:42:33,906 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 15:42:33,919 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 15:42:33,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 15:42:33,924 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 15:42:33,925 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 15:42:33,925 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2020-07-21 15:42:34,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ec600a3/f0b5eb89d0d9495a919b1fe1193e17fb/FLAG267db6dd5 [2020-07-21 15:42:34,570 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 15:42:34,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product63.cil.c [2020-07-21 15:42:34,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ec600a3/f0b5eb89d0d9495a919b1fe1193e17fb/FLAG267db6dd5 [2020-07-21 15:42:34,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ec600a3/f0b5eb89d0d9495a919b1fe1193e17fb [2020-07-21 15:42:34,836 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 15:42:34,840 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 15:42:34,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 15:42:34,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 15:42:34,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 15:42:34,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:42:34" (1/1) ... [2020-07-21 15:42:34,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337a95a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:34, skipping insertion in model container [2020-07-21 15:42:34,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:42:34" (1/1) ... [2020-07-21 15:42:34,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 15:42:34,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 15:42:35,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:42:35,276 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 15:42:35,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:42:35,515 INFO L208 MainTranslator]: Completed translation [2020-07-21 15:42:35,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:35 WrapperNode [2020-07-21 15:42:35,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 15:42:35,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 15:42:35,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 15:42:35,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 15:42:35,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:35" (1/1) ... [2020-07-21 15:42:35,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:35" (1/1) ... [2020-07-21 15:42:35,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:35" (1/1) ... [2020-07-21 15:42:35,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:35" (1/1) ... [2020-07-21 15:42:35,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:35" (1/1) ... [2020-07-21 15:42:35,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:35" (1/1) ... [2020-07-21 15:42:35,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:35" (1/1) ... [2020-07-21 15:42:35,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 15:42:35,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 15:42:35,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 15:42:35,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 15:42:35,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:42:35,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 15:42:35,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 15:42:35,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 15:42:35,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 15:42:35,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 15:42:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 15:42:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 15:42:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 15:42:35,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 15:42:35,683 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 15:42:35,684 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 15:42:35,684 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 15:42:35,684 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 15:42:35,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 15:42:35,685 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 15:42:35,686 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 15:42:35,686 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 15:42:35,686 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 15:42:35,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-07-21 15:42:35,686 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 15:42:35,687 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 15:42:35,687 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 15:42:35,687 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 15:42:35,687 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 15:42:35,687 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 15:42:35,688 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 15:42:35,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-21 15:42:35,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 15:42:35,689 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 15:42:35,690 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 15:42:35,690 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-21 15:42:35,690 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-07-21 15:42:35,691 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 15:42:35,691 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-07-21 15:42:35,691 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 15:42:35,691 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 15:42:35,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 15:42:35,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 15:42:35,692 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 15:42:35,692 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 15:42:35,692 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-21 15:42:35,692 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-21 15:42:35,692 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 15:42:35,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 15:42:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 15:42:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 15:42:35,693 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 15:42:35,694 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 15:42:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 15:42:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 15:42:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 15:42:35,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 15:42:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 15:42:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 15:42:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 15:42:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 15:42:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 15:42:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 15:42:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 15:42:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 15:42:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 15:42:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 15:42:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 15:42:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 15:42:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 15:42:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 15:42:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 15:42:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 15:42:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 15:42:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 15:42:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 15:42:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 15:42:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 15:42:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 15:42:35,701 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 15:42:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 15:42:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 15:42:35,702 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 15:42:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 15:42:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 15:42:35,703 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-07-21 15:42:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 15:42:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 15:42:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 15:42:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 15:42:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-21 15:42:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 15:42:35,704 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 15:42:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-21 15:42:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 15:42:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 15:42:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 15:42:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-21 15:42:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-21 15:42:35,705 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-07-21 15:42:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 15:42:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-07-21 15:42:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 15:42:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 15:42:35,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 15:42:37,054 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 15:42:37,055 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 15:42:37,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:42:37 BoogieIcfgContainer [2020-07-21 15:42:37,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 15:42:37,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 15:42:37,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 15:42:37,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 15:42:37,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:42:34" (1/3) ... [2020-07-21 15:42:37,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3ea326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:42:37, skipping insertion in model container [2020-07-21 15:42:37,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:42:35" (2/3) ... [2020-07-21 15:42:37,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3ea326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:42:37, skipping insertion in model container [2020-07-21 15:42:37,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:42:37" (3/3) ... [2020-07-21 15:42:37,069 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product63.cil.c [2020-07-21 15:42:37,079 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 15:42:37,088 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 15:42:37,102 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 15:42:37,128 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 15:42:37,128 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 15:42:37,129 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 15:42:37,129 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 15:42:37,129 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 15:42:37,129 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 15:42:37,130 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 15:42:37,130 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 15:42:37,153 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-07-21 15:42:37,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 15:42:37,163 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:37,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:42:37,165 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:37,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:37,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1593418819, now seen corresponding path program 1 times [2020-07-21 15:42:37,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:37,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991674998] [2020-07-21 15:42:37,182 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:37,558 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:42:37,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:37,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 15:42:37,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:42:37,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:37,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991674998] [2020-07-21 15:42:37,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:37,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 15:42:37,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994281749] [2020-07-21 15:42:37,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 15:42:37,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:37,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 15:42:37,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:42:37,631 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 2 states. [2020-07-21 15:42:37,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:37,681 INFO L93 Difference]: Finished difference Result 318 states and 395 transitions. [2020-07-21 15:42:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 15:42:37,682 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 15:42:37,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:37,698 INFO L225 Difference]: With dead ends: 318 [2020-07-21 15:42:37,698 INFO L226 Difference]: Without dead ends: 159 [2020-07-21 15:42:37,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:42:37,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-07-21 15:42:37,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2020-07-21 15:42:37,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-07-21 15:42:37,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2020-07-21 15:42:37,774 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 46 [2020-07-21 15:42:37,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:37,775 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2020-07-21 15:42:37,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 15:42:37,775 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2020-07-21 15:42:37,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 15:42:37,779 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:37,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:42:37,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:37,986 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:37,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:37,987 INFO L82 PathProgramCache]: Analyzing trace with hash 261795935, now seen corresponding path program 1 times [2020-07-21 15:42:37,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:37,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092762792] [2020-07-21 15:42:37,989 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:38,307 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:42:38,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:38,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 15:42:38,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:42:38,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:38,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092762792] [2020-07-21 15:42:38,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:38,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:42:38,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632547686] [2020-07-21 15:42:38,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:42:38,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:38,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:42:38,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:42:38,349 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand 3 states. [2020-07-21 15:42:38,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:38,379 INFO L93 Difference]: Finished difference Result 261 states and 309 transitions. [2020-07-21 15:42:38,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:42:38,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 15:42:38,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:38,383 INFO L225 Difference]: With dead ends: 261 [2020-07-21 15:42:38,385 INFO L226 Difference]: Without dead ends: 150 [2020-07-21 15:42:38,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:42:38,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-07-21 15:42:38,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-07-21 15:42:38,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-07-21 15:42:38,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2020-07-21 15:42:38,421 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 47 [2020-07-21 15:42:38,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:38,422 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2020-07-21 15:42:38,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:42:38,422 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2020-07-21 15:42:38,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-21 15:42:38,429 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:38,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:42:38,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:38,647 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:38,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:38,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1299589925, now seen corresponding path program 1 times [2020-07-21 15:42:38,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:38,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310347931] [2020-07-21 15:42:38,648 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:38,948 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:42:38,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:38,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 15:42:38,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:38,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:42:38,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:38,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310347931] [2020-07-21 15:42:38,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:38,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:42:38,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875395009] [2020-07-21 15:42:38,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:42:38,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:38,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:42:38,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:42:38,987 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand 3 states. [2020-07-21 15:42:39,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:39,015 INFO L93 Difference]: Finished difference Result 400 states and 483 transitions. [2020-07-21 15:42:39,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:42:39,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-21 15:42:39,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:39,020 INFO L225 Difference]: With dead ends: 400 [2020-07-21 15:42:39,020 INFO L226 Difference]: Without dead ends: 274 [2020-07-21 15:42:39,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:42:39,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-07-21 15:42:39,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 270. [2020-07-21 15:42:39,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-07-21 15:42:39,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 325 transitions. [2020-07-21 15:42:39,077 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 325 transitions. Word has length 51 [2020-07-21 15:42:39,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:39,078 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 325 transitions. [2020-07-21 15:42:39,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:42:39,078 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 325 transitions. [2020-07-21 15:42:39,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 15:42:39,085 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:39,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:42:39,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:39,303 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:39,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:39,304 INFO L82 PathProgramCache]: Analyzing trace with hash -848411279, now seen corresponding path program 1 times [2020-07-21 15:42:39,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:39,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807961186] [2020-07-21 15:42:39,305 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:39,623 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:42:39,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:39,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 15:42:39,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:42:39,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:39,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807961186] [2020-07-21 15:42:39,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:39,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:42:39,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528743939] [2020-07-21 15:42:39,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:42:39,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:39,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:42:39,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:42:39,714 INFO L87 Difference]: Start difference. First operand 270 states and 325 transitions. Second operand 6 states. [2020-07-21 15:42:40,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:40,082 INFO L93 Difference]: Finished difference Result 743 states and 937 transitions. [2020-07-21 15:42:40,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:42:40,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-21 15:42:40,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:40,088 INFO L225 Difference]: With dead ends: 743 [2020-07-21 15:42:40,088 INFO L226 Difference]: Without dead ends: 497 [2020-07-21 15:42:40,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 15:42:40,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-07-21 15:42:40,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2020-07-21 15:42:40,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-07-21 15:42:40,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 624 transitions. [2020-07-21 15:42:40,143 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 624 transitions. Word has length 57 [2020-07-21 15:42:40,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:40,144 INFO L479 AbstractCegarLoop]: Abstraction has 497 states and 624 transitions. [2020-07-21 15:42:40,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:42:40,144 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 624 transitions. [2020-07-21 15:42:40,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-21 15:42:40,147 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:40,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:42:40,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:40,349 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:40,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:40,350 INFO L82 PathProgramCache]: Analyzing trace with hash -533846889, now seen corresponding path program 1 times [2020-07-21 15:42:40,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:40,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822001970] [2020-07-21 15:42:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:40,621 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:42:40,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:40,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 15:42:40,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:40,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:42:40,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:40,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822001970] [2020-07-21 15:42:40,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:40,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:42:40,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281895427] [2020-07-21 15:42:40,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:42:40,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:40,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:42:40,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:42:40,650 INFO L87 Difference]: Start difference. First operand 497 states and 624 transitions. Second operand 3 states. [2020-07-21 15:42:40,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:40,734 INFO L93 Difference]: Finished difference Result 1143 states and 1503 transitions. [2020-07-21 15:42:40,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:42:40,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-07-21 15:42:40,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:40,745 INFO L225 Difference]: With dead ends: 1143 [2020-07-21 15:42:40,746 INFO L226 Difference]: Without dead ends: 670 [2020-07-21 15:42:40,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:42:40,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-07-21 15:42:40,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 657. [2020-07-21 15:42:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2020-07-21 15:42:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 825 transitions. [2020-07-21 15:42:40,821 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 825 transitions. Word has length 61 [2020-07-21 15:42:40,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:40,822 INFO L479 AbstractCegarLoop]: Abstraction has 657 states and 825 transitions. [2020-07-21 15:42:40,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:42:40,822 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 825 transitions. [2020-07-21 15:42:40,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-07-21 15:42:40,825 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:40,825 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:42:41,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:41,037 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:41,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:41,038 INFO L82 PathProgramCache]: Analyzing trace with hash -971494118, now seen corresponding path program 1 times [2020-07-21 15:42:41,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:41,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627697091] [2020-07-21 15:42:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:41,220 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:42:41,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:41,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 15:42:41,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:41,249 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-21 15:42:41,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:41,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627697091] [2020-07-21 15:42:41,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:41,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:42:41,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284336072] [2020-07-21 15:42:41,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:42:41,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:41,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:42:41,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:42:41,252 INFO L87 Difference]: Start difference. First operand 657 states and 825 transitions. Second operand 3 states. [2020-07-21 15:42:41,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:41,324 INFO L93 Difference]: Finished difference Result 755 states and 948 transitions. [2020-07-21 15:42:41,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:42:41,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-07-21 15:42:41,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:41,327 INFO L225 Difference]: With dead ends: 755 [2020-07-21 15:42:41,328 INFO L226 Difference]: Without dead ends: 383 [2020-07-21 15:42:41,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:42:41,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-07-21 15:42:41,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 377. [2020-07-21 15:42:41,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-07-21 15:42:41,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 463 transitions. [2020-07-21 15:42:41,354 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 463 transitions. Word has length 132 [2020-07-21 15:42:41,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:41,355 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 463 transitions. [2020-07-21 15:42:41,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:42:41,355 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 463 transitions. [2020-07-21 15:42:41,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-21 15:42:41,357 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:41,358 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:42:41,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:41,571 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:41,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:41,572 INFO L82 PathProgramCache]: Analyzing trace with hash 2121665403, now seen corresponding path program 1 times [2020-07-21 15:42:41,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:41,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930473821] [2020-07-21 15:42:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:41,902 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:42:41,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:41,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:42:41,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-07-21 15:42:41,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:41,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930473821] [2020-07-21 15:42:41,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:41,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:42:41,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941993148] [2020-07-21 15:42:41,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:42:41,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:41,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:42:41,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:42:41,967 INFO L87 Difference]: Start difference. First operand 377 states and 463 transitions. Second operand 6 states. [2020-07-21 15:42:42,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:42,223 INFO L93 Difference]: Finished difference Result 386 states and 471 transitions. [2020-07-21 15:42:42,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 15:42:42,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-07-21 15:42:42,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:42,226 INFO L225 Difference]: With dead ends: 386 [2020-07-21 15:42:42,227 INFO L226 Difference]: Without dead ends: 335 [2020-07-21 15:42:42,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 15:42:42,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-07-21 15:42:42,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2020-07-21 15:42:42,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-07-21 15:42:42,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 404 transitions. [2020-07-21 15:42:42,247 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 404 transitions. Word has length 146 [2020-07-21 15:42:42,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:42,248 INFO L479 AbstractCegarLoop]: Abstraction has 331 states and 404 transitions. [2020-07-21 15:42:42,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:42:42,248 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 404 transitions. [2020-07-21 15:42:42,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-07-21 15:42:42,251 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:42,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:42:42,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:42,467 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:42,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:42,468 INFO L82 PathProgramCache]: Analyzing trace with hash 530822034, now seen corresponding path program 1 times [2020-07-21 15:42:42,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:42,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941194532] [2020-07-21 15:42:42,470 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:42,731 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:42:42,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:42,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:42:42,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:42,786 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-07-21 15:42:42,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:42,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941194532] [2020-07-21 15:42:42,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:42,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:42:42,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832631913] [2020-07-21 15:42:42,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:42:42,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:42,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:42:42,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:42:42,789 INFO L87 Difference]: Start difference. First operand 331 states and 404 transitions. Second operand 6 states. [2020-07-21 15:42:42,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:42,836 INFO L93 Difference]: Finished difference Result 652 states and 848 transitions. [2020-07-21 15:42:42,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:42:42,837 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-07-21 15:42:42,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:42,839 INFO L225 Difference]: With dead ends: 652 [2020-07-21 15:42:42,839 INFO L226 Difference]: Without dead ends: 345 [2020-07-21 15:42:42,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 15:42:42,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-07-21 15:42:42,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 341. [2020-07-21 15:42:42,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-07-21 15:42:42,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 415 transitions. [2020-07-21 15:42:42,861 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 415 transitions. Word has length 168 [2020-07-21 15:42:42,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:42,862 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 415 transitions. [2020-07-21 15:42:42,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:42:42,862 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 415 transitions. [2020-07-21 15:42:42,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-07-21 15:42:42,866 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:42,866 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:42:43,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:43,080 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:43,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:43,081 INFO L82 PathProgramCache]: Analyzing trace with hash 198178896, now seen corresponding path program 1 times [2020-07-21 15:42:43,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:43,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406337727] [2020-07-21 15:42:43,082 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:43,265 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:42:43,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:43,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 15:42:43,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-07-21 15:42:43,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:43,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406337727] [2020-07-21 15:42:43,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:43,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 15:42:43,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728900681] [2020-07-21 15:42:43,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 15:42:43,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:43,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 15:42:43,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:42:43,314 INFO L87 Difference]: Start difference. First operand 341 states and 415 transitions. Second operand 5 states. [2020-07-21 15:42:43,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:43,343 INFO L93 Difference]: Finished difference Result 639 states and 812 transitions. [2020-07-21 15:42:43,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 15:42:43,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-07-21 15:42:43,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:43,347 INFO L225 Difference]: With dead ends: 639 [2020-07-21 15:42:43,347 INFO L226 Difference]: Without dead ends: 322 [2020-07-21 15:42:43,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:42:43,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-07-21 15:42:43,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2020-07-21 15:42:43,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-07-21 15:42:43,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 389 transitions. [2020-07-21 15:42:43,369 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 389 transitions. Word has length 168 [2020-07-21 15:42:43,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:43,369 INFO L479 AbstractCegarLoop]: Abstraction has 322 states and 389 transitions. [2020-07-21 15:42:43,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 15:42:43,369 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 389 transitions. [2020-07-21 15:42:43,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-07-21 15:42:43,372 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:43,372 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:42:43,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:43,587 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:43,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:43,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1799344943, now seen corresponding path program 1 times [2020-07-21 15:42:43,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:43,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014348395] [2020-07-21 15:42:43,589 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:43,895 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:42:43,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:43,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 15:42:43,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:42:43,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:43,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014348395] [2020-07-21 15:42:43,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:43,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:42:43,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437491208] [2020-07-21 15:42:43,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:42:43,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:43,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:42:43,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:42:43,995 INFO L87 Difference]: Start difference. First operand 322 states and 389 transitions. Second operand 6 states. [2020-07-21 15:42:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:45,255 INFO L93 Difference]: Finished difference Result 859 states and 1110 transitions. [2020-07-21 15:42:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 15:42:45,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2020-07-21 15:42:45,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:45,260 INFO L225 Difference]: With dead ends: 859 [2020-07-21 15:42:45,260 INFO L226 Difference]: Without dead ends: 561 [2020-07-21 15:42:45,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 15:42:45,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2020-07-21 15:42:45,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 546. [2020-07-21 15:42:45,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-07-21 15:42:45,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 670 transitions. [2020-07-21 15:42:45,299 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 670 transitions. Word has length 168 [2020-07-21 15:42:45,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:45,299 INFO L479 AbstractCegarLoop]: Abstraction has 546 states and 670 transitions. [2020-07-21 15:42:45,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:42:45,299 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 670 transitions. [2020-07-21 15:42:45,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-07-21 15:42:45,303 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:45,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:42:45,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:45,518 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:45,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:45,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1229554551, now seen corresponding path program 1 times [2020-07-21 15:42:45,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:45,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314472573] [2020-07-21 15:42:45,519 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:45,783 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:42:45,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:45,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:42:45,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:45,873 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:42:45,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:42:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-21 15:42:46,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314472573] [2020-07-21 15:42:46,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:42:46,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-07-21 15:42:46,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307338843] [2020-07-21 15:42:46,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 15:42:46,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:46,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 15:42:46,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-21 15:42:46,402 INFO L87 Difference]: Start difference. First operand 546 states and 670 transitions. Second operand 12 states. [2020-07-21 15:42:48,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:48,134 INFO L93 Difference]: Finished difference Result 1419 states and 1886 transitions. [2020-07-21 15:42:48,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-21 15:42:48,134 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 172 [2020-07-21 15:42:48,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:48,141 INFO L225 Difference]: With dead ends: 1419 [2020-07-21 15:42:48,141 INFO L226 Difference]: Without dead ends: 897 [2020-07-21 15:42:48,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 332 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-07-21 15:42:48,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2020-07-21 15:42:48,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 734. [2020-07-21 15:42:48,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 734 states. [2020-07-21 15:42:48,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 904 transitions. [2020-07-21 15:42:48,197 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 904 transitions. Word has length 172 [2020-07-21 15:42:48,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:48,200 INFO L479 AbstractCegarLoop]: Abstraction has 734 states and 904 transitions. [2020-07-21 15:42:48,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 15:42:48,200 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 904 transitions. [2020-07-21 15:42:48,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-07-21 15:42:48,204 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:48,205 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:42:48,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:48,418 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:48,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:48,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1994438147, now seen corresponding path program 2 times [2020-07-21 15:42:48,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:48,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118080043] [2020-07-21 15:42:48,420 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:48,690 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:42:48,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:48,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 15:42:48,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:48,772 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 15:42:48,772 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 15:42:48,838 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 119 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 15:42:48,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:42:49,178 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:42:49,332 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-21 15:42:49,333 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:42:49,390 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-21 15:42:49,391 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:42:49,409 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-21 15:42:49,410 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:42:49,459 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:42:49,738 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 47 proven. 32 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-07-21 15:42:49,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118080043] [2020-07-21 15:42:49,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:42:49,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2020-07-21 15:42:49,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052863804] [2020-07-21 15:42:49,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-21 15:42:49,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:49,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-21 15:42:49,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-07-21 15:42:49,743 INFO L87 Difference]: Start difference. First operand 734 states and 904 transitions. Second operand 16 states. [2020-07-21 15:42:52,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:52,287 INFO L93 Difference]: Finished difference Result 2024 states and 2734 transitions. [2020-07-21 15:42:52,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-21 15:42:52,287 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 241 [2020-07-21 15:42:52,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:52,296 INFO L225 Difference]: With dead ends: 2024 [2020-07-21 15:42:52,297 INFO L226 Difference]: Without dead ends: 1376 [2020-07-21 15:42:52,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 472 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2020-07-21 15:42:52,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-07-21 15:42:52,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1082. [2020-07-21 15:42:52,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1082 states. [2020-07-21 15:42:52,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1322 transitions. [2020-07-21 15:42:52,374 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1322 transitions. Word has length 241 [2020-07-21 15:42:52,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:52,375 INFO L479 AbstractCegarLoop]: Abstraction has 1082 states and 1322 transitions. [2020-07-21 15:42:52,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-21 15:42:52,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1322 transitions. [2020-07-21 15:42:52,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-07-21 15:42:52,381 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:42:52,381 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:42:52,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:52,595 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:42:52,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:42:52,595 INFO L82 PathProgramCache]: Analyzing trace with hash 267135103, now seen corresponding path program 1 times [2020-07-21 15:42:52,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:42:52,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996885549] [2020-07-21 15:42:52,596 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:52,891 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:42:52,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:42:52,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 15:42:52,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:42:53,003 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 15:42:53,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:42:53,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996885549] [2020-07-21 15:42:53,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:42:53,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:42:53,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052482675] [2020-07-21 15:42:53,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:42:53,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:42:53,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:42:53,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:42:53,007 INFO L87 Difference]: Start difference. First operand 1082 states and 1322 transitions. Second operand 6 states. [2020-07-21 15:42:53,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:42:53,059 INFO L93 Difference]: Finished difference Result 1452 states and 1762 transitions. [2020-07-21 15:42:53,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:42:53,060 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 241 [2020-07-21 15:42:53,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:42:53,061 INFO L225 Difference]: With dead ends: 1452 [2020-07-21 15:42:53,061 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 15:42:53,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 15:42:53,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 15:42:53,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 15:42:53,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 15:42:53,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 15:42:53,066 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2020-07-21 15:42:53,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:42:53,067 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 15:42:53,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:42:53,067 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 15:42:53,067 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 15:42:53,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:42:53,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 15:42:54,896 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-07-21 15:42:55,636 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-07-21 15:42:55,911 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2020-07-21 15:42:56,116 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 36 [2020-07-21 15:42:57,393 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 17 [2020-07-21 15:42:57,455 INFO L268 CegarLoopResult]: For program point L123(lines 123 127) no Hoare annotation was computed. [2020-07-21 15:42:57,455 INFO L268 CegarLoopResult]: For program point L123-1(lines 123 127) no Hoare annotation was computed. [2020-07-21 15:42:57,455 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 15:42:57,455 INFO L268 CegarLoopResult]: For program point L117-2(lines 117 138) no Hoare annotation was computed. [2020-07-21 15:42:57,455 INFO L268 CegarLoopResult]: For program point __utac__exception__cf_handler_freeFINAL(lines 92 147) no Hoare annotation was computed. [2020-07-21 15:42:57,455 INFO L268 CegarLoopResult]: For program point L139(lines 116 140) no Hoare annotation was computed. [2020-07-21 15:42:57,456 INFO L268 CegarLoopResult]: For program point __utac__exception__cf_handler_freeEXIT(lines 92 147) no Hoare annotation was computed. [2020-07-21 15:42:57,456 INFO L268 CegarLoopResult]: For program point __utac__exception__cf_handler_freeENTRY(lines 92 147) no Hoare annotation was computed. [2020-07-21 15:42:57,456 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 15:42:57,456 INFO L268 CegarLoopResult]: For program point L193-1(line 193) no Hoare annotation was computed. [2020-07-21 15:42:57,456 INFO L268 CegarLoopResult]: For program point __utac__exception__cf_handler_resetFINAL(lines 148 207) no Hoare annotation was computed. [2020-07-21 15:42:57,456 INFO L268 CegarLoopResult]: For program point L180(lines 180 184) no Hoare annotation was computed. [2020-07-21 15:42:57,456 INFO L268 CegarLoopResult]: For program point L180-1(lines 180 184) no Hoare annotation was computed. [2020-07-21 15:42:57,456 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 15:42:57,457 INFO L268 CegarLoopResult]: For program point __utac__exception__cf_handler_resetENTRY(lines 148 207) no Hoare annotation was computed. [2020-07-21 15:42:57,457 INFO L268 CegarLoopResult]: For program point L174-2(lines 174 199) no Hoare annotation was computed. [2020-07-21 15:42:57,457 INFO L268 CegarLoopResult]: For program point __utac__exception__cf_handler_resetEXIT(lines 148 207) no Hoare annotation was computed. [2020-07-21 15:42:57,457 INFO L268 CegarLoopResult]: For program point L200(lines 173 201) no Hoare annotation was computed. [2020-07-21 15:42:57,458 INFO L271 CegarLoopResult]: At program point select_helpersFINAL(lines 528 534) the Hoare annotation is: true [2020-07-21 15:42:57,458 INFO L268 CegarLoopResult]: For program point select_helpersEXIT(lines 528 534) no Hoare annotation was computed. [2020-07-21 15:42:57,459 INFO L268 CegarLoopResult]: For program point valid_productEXIT(lines 535 543) no Hoare annotation was computed. [2020-07-21 15:42:57,459 INFO L271 CegarLoopResult]: At program point valid_productENTRY(lines 535 543) the Hoare annotation is: true [2020-07-21 15:42:57,459 INFO L268 CegarLoopResult]: For program point valid_productFINAL(lines 535 543) no Hoare annotation was computed. [2020-07-21 15:42:57,459 INFO L271 CegarLoopResult]: At program point __utac_acc__Specification4_spec__1ENTRY(lines 548 572) the Hoare annotation is: true [2020-07-21 15:42:57,459 INFO L268 CegarLoopResult]: For program point __utac_acc__Specification4_spec__1EXIT(lines 548 572) no Hoare annotation was computed. [2020-07-21 15:42:57,459 INFO L264 CegarLoopResult]: At program point L562(line 562) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~systemActive~0))) (.cse1 (not (= 0 ~pumpRunning~0)))) (and (or (not (<= 1 ~waterLevel~0)) .cse0 .cse1) (or .cse0 (not (<= 2 ~waterLevel~0))) (or (not (= 0 ~systemActive~0)) .cse1))) [2020-07-21 15:42:57,459 INFO L268 CegarLoopResult]: For program point L560(lines 560 566) no Hoare annotation was computed. [2020-07-21 15:42:57,460 INFO L264 CegarLoopResult]: At program point L558(line 558) the Hoare annotation is: (let ((.cse1 (not (<= 1 ~systemActive~0))) (.cse0 (not (<= 1 ~waterLevel~0))) (.cse2 (not (= 0 ~pumpRunning~0)))) (and (or .cse0 .cse1 .cse2) (or .cse1 (not (<= 2 ~waterLevel~0))) (or .cse0 (not (= 0 ~systemActive~0)) .cse2))) [2020-07-21 15:42:57,461 INFO L268 CegarLoopResult]: For program point L558-1(line 558) no Hoare annotation was computed. [2020-07-21 15:42:57,461 INFO L268 CegarLoopResult]: For program point L556(lines 556 569) no Hoare annotation was computed. [2020-07-21 15:42:57,461 INFO L268 CegarLoopResult]: For program point L556-1(lines 548 572) no Hoare annotation was computed. [2020-07-21 15:42:57,461 INFO L271 CegarLoopResult]: At program point L554(line 554) the Hoare annotation is: true [2020-07-21 15:42:57,461 INFO L268 CegarLoopResult]: For program point L554-1(line 554) no Hoare annotation was computed. [2020-07-21 15:42:57,461 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 486 508) the Hoare annotation is: (or (not (<= |old(~waterLevel~0)| 1)) (and (= 0 ~pumpRunning~0) (<= ~waterLevel~0 1) (<= 1 ~systemActive~0) (<= |old(~waterLevel~0)| ~waterLevel~0)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|))) [2020-07-21 15:42:57,461 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 486 508) no Hoare annotation was computed. [2020-07-21 15:42:57,462 INFO L264 CegarLoopResult]: At program point L498(line 498) the Hoare annotation is: (or (not (<= |old(~waterLevel~0)| 1)) (and (= 0 ~pumpRunning~0) (<= ~waterLevel~0 1) (<= 1 ~systemActive~0) (<= |old(~waterLevel~0)| ~waterLevel~0)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|))) [2020-07-21 15:42:57,462 INFO L264 CegarLoopResult]: At program point L498-1(line 498) the Hoare annotation is: (or (not (<= |old(~waterLevel~0)| 1)) (and (= 0 ~pumpRunning~0) (<= ~waterLevel~0 1) (<= 1 ~systemActive~0) (<= |old(~waterLevel~0)| ~waterLevel~0)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|))) [2020-07-21 15:42:57,462 INFO L268 CegarLoopResult]: For program point L496(lines 496 503) no Hoare annotation was computed. [2020-07-21 15:42:57,462 INFO L268 CegarLoopResult]: For program point L496-1(lines 496 503) no Hoare annotation was computed. [2020-07-21 15:42:57,462 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 15:42:57,462 INFO L264 CegarLoopResult]: At program point L493(line 493) the Hoare annotation is: (or (not (<= |old(~waterLevel~0)| 1)) (and (= 0 ~pumpRunning~0) (<= ~waterLevel~0 1) (<= 1 ~systemActive~0) (<= |old(~waterLevel~0)| ~waterLevel~0)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|))) [2020-07-21 15:42:57,463 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 486 508) no Hoare annotation was computed. [2020-07-21 15:42:57,463 INFO L264 CegarLoopResult]: At program point L492(line 492) the Hoare annotation is: (or (not (<= |old(~waterLevel~0)| 1)) (and (= 0 ~pumpRunning~0) (<= ~waterLevel~0 1) (<= 1 ~systemActive~0) (<= |old(~waterLevel~0)| ~waterLevel~0)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|))) [2020-07-21 15:42:57,464 INFO L264 CegarLoopResult]: At program point L492-1(line 492) the Hoare annotation is: (or (not (<= |old(~waterLevel~0)| 1)) (and (= 0 ~pumpRunning~0) (<= ~waterLevel~0 1) (<= 1 ~systemActive~0) (<= |old(~waterLevel~0)| ~waterLevel~0)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|))) [2020-07-21 15:42:57,464 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 15:42:57,464 INFO L268 CegarLoopResult]: For program point L448(line 448) no Hoare annotation was computed. [2020-07-21 15:42:57,464 INFO L268 CegarLoopResult]: For program point Specification2EXIT(lines 441 464) no Hoare annotation was computed. [2020-07-21 15:42:57,464 INFO L268 CegarLoopResult]: For program point L447(line 447) no Hoare annotation was computed. [2020-07-21 15:42:57,464 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 15:42:57,464 INFO L268 CegarLoopResult]: For program point Specification2ENTRY(lines 441 464) no Hoare annotation was computed. [2020-07-21 15:42:57,464 INFO L268 CegarLoopResult]: For program point Specification2FINAL(lines 441 464) no Hoare annotation was computed. [2020-07-21 15:42:57,464 INFO L268 CegarLoopResult]: For program point L459(line 459) no Hoare annotation was computed. [2020-07-21 15:42:57,465 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 15:42:57,465 INFO L268 CegarLoopResult]: For program point L457(line 457) no Hoare annotation was computed. [2020-07-21 15:42:57,465 INFO L268 CegarLoopResult]: For program point L456(line 456) no Hoare annotation was computed. [2020-07-21 15:42:57,465 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 15:42:57,465 INFO L268 CegarLoopResult]: For program point L454(line 454) no Hoare annotation was computed. [2020-07-21 15:42:57,465 INFO L268 CegarLoopResult]: For program point L453(line 453) no Hoare annotation was computed. [2020-07-21 15:42:57,465 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 15:42:57,465 INFO L268 CegarLoopResult]: For program point L451(line 451) no Hoare annotation was computed. [2020-07-21 15:42:57,466 INFO L268 CegarLoopResult]: For program point L450(line 450) no Hoare annotation was computed. [2020-07-21 15:42:57,466 INFO L264 CegarLoopResult]: At program point L769(line 769) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0))) [2020-07-21 15:42:57,466 INFO L264 CegarLoopResult]: At program point L765(line 765) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~waterLevel~0))) (.cse1 (not (<= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 0 |old(~pumpRunning~0)|))) (or .cse0 .cse1 (<= 1 processEnvironment__wrappee__methaneQuery_~tmp~6)))) [2020-07-21 15:42:57,466 INFO L268 CegarLoopResult]: For program point L763(lines 763 771) no Hoare annotation was computed. [2020-07-21 15:42:57,466 INFO L264 CegarLoopResult]: At program point L761(line 761) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|))) [2020-07-21 15:42:57,466 INFO L268 CegarLoopResult]: For program point L761-1(line 761) no Hoare annotation was computed. [2020-07-21 15:42:57,466 INFO L268 CegarLoopResult]: For program point L759(lines 759 776) no Hoare annotation was computed. [2020-07-21 15:42:57,467 INFO L264 CegarLoopResult]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 755 779) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|)) (= 0 ~pumpRunning~0)) [2020-07-21 15:42:57,467 INFO L268 CegarLoopResult]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 755 779) no Hoare annotation was computed. [2020-07-21 15:42:57,467 INFO L264 CegarLoopResult]: At program point L774(line 774) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (= 0 ~pumpRunning~0)) [2020-07-21 15:42:57,467 INFO L268 CegarLoopResult]: For program point L774-1(lines 755 779) no Hoare annotation was computed. [2020-07-21 15:42:57,467 INFO L268 CegarLoopResult]: For program point stopSystemEXIT(lines 933 947) no Hoare annotation was computed. [2020-07-21 15:42:57,467 INFO L264 CegarLoopResult]: At program point L939(line 939) the Hoare annotation is: (and (not (= 0 |old(~pumpRunning~0)|)) (or (not (<= 1 |old(~systemActive~0)|)) (<= 1 ~systemActive~0))) [2020-07-21 15:42:57,467 INFO L268 CegarLoopResult]: For program point L937(lines 937 943) no Hoare annotation was computed. [2020-07-21 15:42:57,467 INFO L264 CegarLoopResult]: At program point stopSystemENTRY(lines 933 947) the Hoare annotation is: (let ((.cse0 (not (= 0 |old(~pumpRunning~0)|)))) (and (or .cse0 (= 0 ~pumpRunning~0)) (or (not (<= 1 ~waterLevel~0)) (= 0 ~systemActive~0) .cse0 (not (= 0 |old(~systemActive~0)|))) (or (not (<= 1 |old(~systemActive~0)|)) (<= 1 ~systemActive~0)))) [2020-07-21 15:42:57,468 INFO L268 CegarLoopResult]: For program point stopSystemFINAL(lines 933 947) no Hoare annotation was computed. [2020-07-21 15:42:57,468 INFO L268 CegarLoopResult]: For program point isPumpRunningEXIT(lines 850 858) no Hoare annotation was computed. [2020-07-21 15:42:57,468 INFO L271 CegarLoopResult]: At program point isPumpRunningENTRY(lines 850 858) the Hoare annotation is: true [2020-07-21 15:42:57,468 INFO L268 CegarLoopResult]: For program point isPumpRunningFINAL(lines 850 858) no Hoare annotation was computed. [2020-07-21 15:42:57,469 INFO L268 CegarLoopResult]: For program point L923(lines 923 927) no Hoare annotation was computed. [2020-07-21 15:42:57,469 INFO L271 CegarLoopResult]: At program point isLowWaterLevelENTRY(lines 914 932) the Hoare annotation is: true [2020-07-21 15:42:57,470 INFO L271 CegarLoopResult]: At program point L921(line 921) the Hoare annotation is: true [2020-07-21 15:42:57,470 INFO L268 CegarLoopResult]: For program point L923-2(lines 923 927) no Hoare annotation was computed. [2020-07-21 15:42:57,471 INFO L268 CegarLoopResult]: For program point L921-1(line 921) no Hoare annotation was computed. [2020-07-21 15:42:57,471 INFO L268 CegarLoopResult]: For program point isLowWaterLevelEXIT(lines 914 932) no Hoare annotation was computed. [2020-07-21 15:42:57,471 INFO L268 CegarLoopResult]: For program point isLowWaterLevelFINAL(lines 914 932) no Hoare annotation was computed. [2020-07-21 15:42:57,471 INFO L268 CegarLoopResult]: For program point L866-2(lines 866 874) no Hoare annotation was computed. [2020-07-21 15:42:57,471 INFO L268 CegarLoopResult]: For program point L889(line 889) no Hoare annotation was computed. [2020-07-21 15:42:57,471 INFO L268 CegarLoopResult]: For program point L889-1(line 889) no Hoare annotation was computed. [2020-07-21 15:42:57,471 INFO L268 CegarLoopResult]: For program point printPumpFINAL(lines 859 894) no Hoare annotation was computed. [2020-07-21 15:42:57,471 INFO L268 CegarLoopResult]: For program point L878(lines 878 886) no Hoare annotation was computed. [2020-07-21 15:42:57,472 INFO L268 CegarLoopResult]: For program point L878-2(lines 878 886) no Hoare annotation was computed. [2020-07-21 15:42:57,472 INFO L268 CegarLoopResult]: For program point printPumpENTRY(lines 859 894) no Hoare annotation was computed. [2020-07-21 15:42:57,472 INFO L268 CegarLoopResult]: For program point printPumpEXIT(lines 859 894) no Hoare annotation was computed. [2020-07-21 15:42:57,472 INFO L268 CegarLoopResult]: For program point L866(lines 866 874) no Hoare annotation was computed. [2020-07-21 15:42:57,472 INFO L268 CegarLoopResult]: For program point select_featuresEXIT(lines 521 527) no Hoare annotation was computed. [2020-07-21 15:42:57,472 INFO L271 CegarLoopResult]: At program point select_featuresFINAL(lines 521 527) the Hoare annotation is: true [2020-07-21 15:42:57,472 INFO L268 CegarLoopResult]: For program point __utac__exception__cf_handler_setENTRY(lines 46 91) no Hoare annotation was computed. [2020-07-21 15:42:57,472 INFO L268 CegarLoopResult]: For program point __utac__exception__cf_handler_setEXIT(lines 46 91) no Hoare annotation was computed. [2020-07-21 15:42:57,472 INFO L268 CegarLoopResult]: For program point __utac__exception__cf_handler_setFINAL(lines 46 91) no Hoare annotation was computed. [2020-07-21 15:42:57,473 INFO L268 CegarLoopResult]: For program point L379(lines 379 386) no Hoare annotation was computed. [2020-07-21 15:42:57,473 INFO L268 CegarLoopResult]: For program point __utac__get_this_argtypeFINAL(lines 359 404) no Hoare annotation was computed. [2020-07-21 15:42:57,473 INFO L268 CegarLoopResult]: For program point L373(lines 373 393) no Hoare annotation was computed. [2020-07-21 15:42:57,473 INFO L268 CegarLoopResult]: For program point L373-1(lines 373 393) no Hoare annotation was computed. [2020-07-21 15:42:57,473 INFO L268 CegarLoopResult]: For program point __utac__get_this_argtypeENTRY(lines 359 404) no Hoare annotation was computed. [2020-07-21 15:42:57,473 INFO L268 CegarLoopResult]: For program point __utac__get_this_argtypeEXIT(lines 359 404) no Hoare annotation was computed. [2020-07-21 15:42:57,473 INFO L264 CegarLoopResult]: At program point runTestENTRY(lines 473 482) the Hoare annotation is: (or (not (<= |old(~waterLevel~0)| 1)) (and (= 0 ~pumpRunning~0) (<= ~waterLevel~0 1) (<= 1 ~systemActive~0) (<= |old(~waterLevel~0)| ~waterLevel~0)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|))) [2020-07-21 15:42:57,473 INFO L268 CegarLoopResult]: For program point runTestEXIT(lines 473 482) no Hoare annotation was computed. [2020-07-21 15:42:57,474 INFO L268 CegarLoopResult]: For program point runTestFINAL(lines 473 482) no Hoare annotation was computed. [2020-07-21 15:42:57,474 INFO L271 CegarLoopResult]: At program point isMethaneAlarmENTRY(lines 839 849) the Hoare annotation is: true [2020-07-21 15:42:57,474 INFO L271 CegarLoopResult]: At program point L844(line 844) the Hoare annotation is: true [2020-07-21 15:42:57,474 INFO L268 CegarLoopResult]: For program point L844-1(line 844) no Hoare annotation was computed. [2020-07-21 15:42:57,474 INFO L268 CegarLoopResult]: For program point isMethaneAlarmEXIT(lines 839 849) no Hoare annotation was computed. [2020-07-21 15:42:57,474 INFO L268 CegarLoopResult]: For program point isMethaneAlarmFINAL(lines 839 849) no Hoare annotation was computed. [2020-07-21 15:42:57,474 INFO L271 CegarLoopResult]: At program point deactivatePumpENTRY(lines 831 838) the Hoare annotation is: true [2020-07-21 15:42:57,474 INFO L268 CegarLoopResult]: For program point deactivatePumpEXIT(lines 831 838) no Hoare annotation was computed. [2020-07-21 15:42:57,474 INFO L268 CegarLoopResult]: For program point deactivatePumpFINAL(lines 831 838) no Hoare annotation was computed. [2020-07-21 15:42:57,475 INFO L268 CegarLoopResult]: For program point L662(lines 662 668) no Hoare annotation was computed. [2020-07-21 15:42:57,475 INFO L268 CegarLoopResult]: For program point isHighWaterSensorDryEXIT(lines 658 671) no Hoare annotation was computed. [2020-07-21 15:42:57,475 INFO L271 CegarLoopResult]: At program point isHighWaterSensorDryENTRY(lines 658 671) the Hoare annotation is: true [2020-07-21 15:42:57,475 INFO L268 CegarLoopResult]: For program point isHighWaterSensorDryFINAL(lines 658 671) no Hoare annotation was computed. [2020-07-21 15:42:57,475 INFO L264 CegarLoopResult]: At program point L800(line 800) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (= 0 ~pumpRunning~0)) [2020-07-21 15:42:57,475 INFO L268 CegarLoopResult]: For program point L800-1(lines 781 805) no Hoare annotation was computed. [2020-07-21 15:42:57,475 INFO L264 CegarLoopResult]: At program point L795(line 795) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|))) [2020-07-21 15:42:57,475 INFO L264 CegarLoopResult]: At program point L791(line 791) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|))) [2020-07-21 15:42:57,476 INFO L268 CegarLoopResult]: For program point processEnvironmentEXIT(lines 781 805) no Hoare annotation was computed. [2020-07-21 15:42:57,476 INFO L268 CegarLoopResult]: For program point L789(lines 789 797) no Hoare annotation was computed. [2020-07-21 15:42:57,476 INFO L264 CegarLoopResult]: At program point processEnvironmentENTRY(lines 781 805) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|)) (= 0 ~pumpRunning~0)) [2020-07-21 15:42:57,476 INFO L264 CegarLoopResult]: At program point L787(line 787) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|))) [2020-07-21 15:42:57,477 INFO L268 CegarLoopResult]: For program point L787-1(line 787) no Hoare annotation was computed. [2020-07-21 15:42:57,477 INFO L268 CegarLoopResult]: For program point L785(lines 785 802) no Hoare annotation was computed. [2020-07-21 15:42:57,477 INFO L268 CegarLoopResult]: For program point processEnvironment__wrappee__baseEXIT(lines 721 727) no Hoare annotation was computed. [2020-07-21 15:42:57,477 INFO L271 CegarLoopResult]: At program point processEnvironment__wrappee__baseFINAL(lines 721 727) the Hoare annotation is: true [2020-07-21 15:42:57,478 INFO L268 CegarLoopResult]: For program point L960(lines 959 1006) no Hoare annotation was computed. [2020-07-21 15:42:57,478 INFO L264 CegarLoopResult]: At program point testENTRY(lines 949 1014) the Hoare annotation is: (or (not (<= |old(~waterLevel~0)| 1)) (and (= 0 ~pumpRunning~0) (<= ~waterLevel~0 1) (<= 1 ~systemActive~0) (<= |old(~waterLevel~0)| ~waterLevel~0)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|))) [2020-07-21 15:42:57,478 INFO L268 CegarLoopResult]: For program point L989(lines 989 1002) no Hoare annotation was computed. [2020-07-21 15:42:57,478 INFO L268 CegarLoopResult]: For program point testFINAL(lines 949 1014) no Hoare annotation was computed. [2020-07-21 15:42:57,478 INFO L264 CegarLoopResult]: At program point L981(line 981) the Hoare annotation is: (let ((.cse2 (<= 1 ~systemActive~0)) (.cse0 (= 0 ~pumpRunning~0)) (.cse1 (<= test_~splverifierCounter~0 0))) (or (not (<= |old(~waterLevel~0)| 1)) (and (<= 1 ~waterLevel~0) .cse0 .cse1 .cse2) (not (= 0 |old(~pumpRunning~0)|)) (and (<= 2 ~waterLevel~0) .cse1 .cse2) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|)) (and (= 0 ~systemActive~0) .cse0 .cse1))) [2020-07-21 15:42:57,478 INFO L268 CegarLoopResult]: For program point L979(lines 979 985) no Hoare annotation was computed. [2020-07-21 15:42:57,478 INFO L268 CegarLoopResult]: For program point L979-1(lines 979 985) no Hoare annotation was computed. [2020-07-21 15:42:57,479 INFO L264 CegarLoopResult]: At program point L1004(lines 959 1006) the Hoare annotation is: (let ((.cse2 (<= 1 ~systemActive~0)) (.cse0 (= 0 ~pumpRunning~0)) (.cse1 (<= test_~splverifierCounter~0 0))) (or (not (<= |old(~waterLevel~0)| 1)) (and (<= 1 ~waterLevel~0) .cse0 .cse1 .cse2) (not (= 0 |old(~pumpRunning~0)|)) (and (<= 2 ~waterLevel~0) .cse1 .cse2) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|)) (and (= 0 ~systemActive~0) .cse0 .cse1))) [2020-07-21 15:42:57,479 INFO L264 CegarLoopResult]: At program point L971(line 971) the Hoare annotation is: (let ((.cse2 (<= 1 ~systemActive~0)) (.cse0 (= 0 ~pumpRunning~0)) (.cse1 (<= test_~splverifierCounter~0 0))) (or (not (<= |old(~waterLevel~0)| 1)) (and (<= 1 ~waterLevel~0) .cse0 .cse1 .cse2) (not (= 0 |old(~pumpRunning~0)|)) (and (<= 2 ~waterLevel~0) .cse1 .cse2) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|)) (and (= 0 ~systemActive~0) .cse0 .cse1))) [2020-07-21 15:42:57,479 INFO L268 CegarLoopResult]: For program point L969(lines 969 975) no Hoare annotation was computed. [2020-07-21 15:42:57,480 INFO L268 CegarLoopResult]: For program point L969-1(lines 969 975) no Hoare annotation was computed. [2020-07-21 15:42:57,480 INFO L268 CegarLoopResult]: For program point L961(lines 961 965) no Hoare annotation was computed. [2020-07-21 15:42:57,480 INFO L264 CegarLoopResult]: At program point L1007(lines 958 1008) the Hoare annotation is: (or (not (<= |old(~waterLevel~0)| 1)) (not (= 0 |old(~pumpRunning~0)|)) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|))) [2020-07-21 15:42:57,480 INFO L264 CegarLoopResult]: At program point L997(line 997) the Hoare annotation is: (let ((.cse0 (<= test_~splverifierCounter~0 0))) (or (not (<= |old(~waterLevel~0)| 1)) (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 ~pumpRunning~0) .cse0) (and (<= 1 ~waterLevel~0) .cse0) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|)) (and .cse0 (<= 1 ~systemActive~0)))) [2020-07-21 15:42:57,480 INFO L268 CegarLoopResult]: For program point L995(lines 995 1001) no Hoare annotation was computed. [2020-07-21 15:42:57,480 INFO L268 CegarLoopResult]: For program point testEXIT(lines 949 1014) no Hoare annotation was computed. [2020-07-21 15:42:57,481 INFO L264 CegarLoopResult]: At program point L995-1(lines 989 1002) the Hoare annotation is: (let ((.cse2 (<= 1 ~systemActive~0)) (.cse0 (= 0 ~pumpRunning~0)) (.cse1 (<= test_~splverifierCounter~0 0))) (or (not (<= |old(~waterLevel~0)| 1)) (and (<= 1 ~waterLevel~0) .cse0 .cse1 .cse2) (not (= 0 |old(~pumpRunning~0)|)) (and (<= 2 ~waterLevel~0) .cse1 .cse2) (not (<= 1 |old(~waterLevel~0)|)) (not (<= 1 |old(~systemActive~0)|)) (and (= 0 ~systemActive~0) .cse0 .cse1))) [2020-07-21 15:42:57,481 INFO L268 CegarLoopResult]: For program point __utac__get_this_argENTRY(lines 313 358) no Hoare annotation was computed. [2020-07-21 15:42:57,481 INFO L268 CegarLoopResult]: For program point __utac__get_this_argEXIT(lines 313 358) no Hoare annotation was computed. [2020-07-21 15:42:57,481 INFO L268 CegarLoopResult]: For program point __utac__get_this_argFINAL(lines 313 358) no Hoare annotation was computed. [2020-07-21 15:42:57,481 INFO L268 CegarLoopResult]: For program point L333(lines 333 340) no Hoare annotation was computed. [2020-07-21 15:42:57,481 INFO L268 CegarLoopResult]: For program point L327(lines 327 347) no Hoare annotation was computed. [2020-07-21 15:42:57,481 INFO L268 CegarLoopResult]: For program point L327-1(lines 327 347) no Hoare annotation was computed. [2020-07-21 15:42:57,481 INFO L264 CegarLoopResult]: At program point activatePump__wrappee__lowWaterSensorENTRY(lines 806 813) the Hoare annotation is: (or (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|)) (= 0 ~pumpRunning~0) (not (<= 2 ~waterLevel~0))) [2020-07-21 15:42:57,482 INFO L268 CegarLoopResult]: For program point activatePump__wrappee__lowWaterSensorFINAL(lines 806 813) no Hoare annotation was computed. [2020-07-21 15:42:57,482 INFO L268 CegarLoopResult]: For program point activatePump__wrappee__lowWaterSensorEXIT(lines 806 813) no Hoare annotation was computed. [2020-07-21 15:42:57,482 INFO L268 CegarLoopResult]: For program point isLowWaterSensorDryFINAL(lines 672 680) no Hoare annotation was computed. [2020-07-21 15:42:57,482 INFO L271 CegarLoopResult]: At program point isLowWaterSensorDryENTRY(lines 672 680) the Hoare annotation is: true [2020-07-21 15:42:57,482 INFO L268 CegarLoopResult]: For program point isLowWaterSensorDryEXIT(lines 672 680) no Hoare annotation was computed. [2020-07-21 15:42:57,482 INFO L268 CegarLoopResult]: For program point L634(lines 634 642) no Hoare annotation was computed. [2020-07-21 15:42:57,482 INFO L268 CegarLoopResult]: For program point printEnvironmentEXIT(lines 626 648) no Hoare annotation was computed. [2020-07-21 15:42:57,482 INFO L268 CegarLoopResult]: For program point L634-2(lines 634 642) no Hoare annotation was computed. [2020-07-21 15:42:57,482 INFO L268 CegarLoopResult]: For program point printEnvironmentENTRY(lines 626 648) no Hoare annotation was computed. [2020-07-21 15:42:57,483 INFO L268 CegarLoopResult]: For program point printEnvironmentFINAL(lines 626 648) no Hoare annotation was computed. [2020-07-21 15:42:57,483 INFO L268 CegarLoopResult]: For program point L256(lines 256 297) no Hoare annotation was computed. [2020-07-21 15:42:57,483 INFO L268 CegarLoopResult]: For program point __utac__error_stack_mgtENTRY(lines 210 312) no Hoare annotation was computed. [2020-07-21 15:42:57,483 INFO L268 CegarLoopResult]: For program point L275(line 275) no Hoare annotation was computed. [2020-07-21 15:42:57,483 INFO L268 CegarLoopResult]: For program point L275-1(line 275) no Hoare annotation was computed. [2020-07-21 15:42:57,484 INFO L268 CegarLoopResult]: For program point L234(lines 234 238) no Hoare annotation was computed. [2020-07-21 15:42:57,484 INFO L268 CegarLoopResult]: For program point L298(lines 298 309) no Hoare annotation was computed. [2020-07-21 15:42:57,484 INFO L268 CegarLoopResult]: For program point __utac__error_stack_mgtFINAL(lines 210 312) no Hoare annotation was computed. [2020-07-21 15:42:57,484 INFO L268 CegarLoopResult]: For program point L261(lines 261 265) no Hoare annotation was computed. [2020-07-21 15:42:57,484 INFO L268 CegarLoopResult]: For program point L259-2(lines 259 279) no Hoare annotation was computed. [2020-07-21 15:42:57,484 INFO L268 CegarLoopResult]: For program point L280(lines 258 281) no Hoare annotation was computed. [2020-07-21 15:42:57,484 INFO L268 CegarLoopResult]: For program point __utac__error_stack_mgtEXIT(lines 210 312) no Hoare annotation was computed. [2020-07-21 15:42:57,484 INFO L268 CegarLoopResult]: For program point L239(lines 239 255) no Hoare annotation was computed. [2020-07-21 15:42:57,484 INFO L268 CegarLoopResult]: For program point L299(lines 299 306) no Hoare annotation was computed. [2020-07-21 15:42:57,484 INFO L268 CegarLoopResult]: For program point L260(lines 259 279) no Hoare annotation was computed. [2020-07-21 15:42:57,485 INFO L268 CegarLoopResult]: For program point L291(line 291) no Hoare annotation was computed. [2020-07-21 15:42:57,485 INFO L268 CegarLoopResult]: For program point L291-1(line 291) no Hoare annotation was computed. [2020-07-21 15:42:57,485 INFO L268 CegarLoopResult]: For program point select_oneENTRY(lines 511 520) no Hoare annotation was computed. [2020-07-21 15:42:57,486 INFO L268 CegarLoopResult]: For program point select_oneFINAL(lines 511 520) no Hoare annotation was computed. [2020-07-21 15:42:57,486 INFO L268 CegarLoopResult]: For program point select_oneEXIT(lines 511 520) no Hoare annotation was computed. [2020-07-21 15:42:57,486 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 15:42:57,486 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~waterLevel~0 |old(~waterLevel~0)|) (<= |old(~waterLevel~0)| ~waterLevel~0)) [2020-07-21 15:42:57,486 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 15:42:57,486 INFO L268 CegarLoopResult]: For program point activatePumpEXIT(lines 814 830) no Hoare annotation was computed. [2020-07-21 15:42:57,486 INFO L264 CegarLoopResult]: At program point L825(line 825) the Hoare annotation is: (or (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|)) (= 0 ~pumpRunning~0) (not (<= 2 ~waterLevel~0))) [2020-07-21 15:42:57,486 INFO L264 CegarLoopResult]: At program point activatePumpENTRY(lines 814 830) the Hoare annotation is: (or (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|)) (= 0 ~pumpRunning~0) (not (<= 2 ~waterLevel~0))) [2020-07-21 15:42:57,486 INFO L268 CegarLoopResult]: For program point L825-1(lines 814 830) no Hoare annotation was computed. [2020-07-21 15:42:57,487 INFO L268 CegarLoopResult]: For program point L821(lines 821 827) no Hoare annotation was computed. [2020-07-21 15:42:57,487 INFO L264 CegarLoopResult]: At program point L819(line 819) the Hoare annotation is: (or (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|)) (= 0 ~pumpRunning~0) (not (<= 2 ~waterLevel~0))) [2020-07-21 15:42:57,487 INFO L268 CegarLoopResult]: For program point L819-1(line 819) no Hoare annotation was computed. [2020-07-21 15:42:57,487 INFO L271 CegarLoopResult]: At program point getWaterLevelENTRY(lines 649 657) the Hoare annotation is: true [2020-07-21 15:42:57,487 INFO L268 CegarLoopResult]: For program point getWaterLevelFINAL(lines 649 657) no Hoare annotation was computed. [2020-07-21 15:42:57,487 INFO L268 CegarLoopResult]: For program point getWaterLevelEXIT(lines 649 657) no Hoare annotation was computed. [2020-07-21 15:42:57,487 INFO L268 CegarLoopResult]: For program point isHighWaterLevelEXIT(lines 895 913) no Hoare annotation was computed. [2020-07-21 15:42:57,487 INFO L268 CegarLoopResult]: For program point L904(lines 904 908) no Hoare annotation was computed. [2020-07-21 15:42:57,487 INFO L271 CegarLoopResult]: At program point L902(line 902) the Hoare annotation is: true [2020-07-21 15:42:57,488 INFO L268 CegarLoopResult]: For program point L904-2(lines 904 908) no Hoare annotation was computed. [2020-07-21 15:42:57,488 INFO L271 CegarLoopResult]: At program point isHighWaterLevelENTRY(lines 895 913) the Hoare annotation is: true [2020-07-21 15:42:57,488 INFO L268 CegarLoopResult]: For program point L902-1(line 902) no Hoare annotation was computed. [2020-07-21 15:42:57,488 INFO L268 CegarLoopResult]: For program point isHighWaterLevelFINAL(lines 895 913) no Hoare annotation was computed. [2020-07-21 15:42:57,488 INFO L268 CegarLoopResult]: For program point ##fun~int~X~int~TO~intEXIT(line -1) no Hoare annotation was computed. [2020-07-21 15:42:57,488 INFO L268 CegarLoopResult]: For program point ##fun~int~X~int~TO~intENTRY(line -1) no Hoare annotation was computed. [2020-07-21 15:42:57,488 INFO L268 CegarLoopResult]: For program point ##fun~int~X~int~TO~intFINAL(line -1) no Hoare annotation was computed. [2020-07-21 15:42:57,489 INFO L268 CegarLoopResult]: For program point L609-1(lines 605 616) no Hoare annotation was computed. [2020-07-21 15:42:57,489 INFO L271 CegarLoopResult]: At program point changeMethaneLevelENTRY(lines 605 616) the Hoare annotation is: true [2020-07-21 15:42:57,489 INFO L268 CegarLoopResult]: For program point changeMethaneLevelEXIT(lines 605 616) no Hoare annotation was computed. [2020-07-21 15:42:57,490 INFO L264 CegarLoopResult]: At program point L703(line 703) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~systemActive~0))) (.cse1 (not (= 0 |old(~pumpRunning~0)|)))) (and (or .cse0 (not (<= 2 |old(~waterLevel~0)|)) (and (<= ~waterLevel~0 |old(~waterLevel~0)|) (<= |old(~waterLevel~0)| ~waterLevel~0))) (or (not (= 0 ~systemActive~0)) .cse1) (or .cse0 .cse1 (not (<= 1 |old(~waterLevel~0)|))))) [2020-07-21 15:42:57,490 INFO L268 CegarLoopResult]: For program point L701(lines 700 719) no Hoare annotation was computed. [2020-07-21 15:42:57,490 INFO L264 CegarLoopResult]: At program point timeShiftENTRY(lines 697 720) the Hoare annotation is: (let ((.cse1 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (<= 1 ~systemActive~0))) (.cse2 (<= |old(~waterLevel~0)| ~waterLevel~0)) (.cse4 (= 0 ~pumpRunning~0)) (.cse6 (not (= 0 ~systemActive~0))) (.cse3 (not (= 0 |old(~pumpRunning~0)|))) (.cse5 (not (<= 1 |old(~waterLevel~0)|)))) (and (or .cse0 .cse1 (and (<= ~waterLevel~0 |old(~waterLevel~0)|) .cse2)) (or .cse0 .cse3 .cse4 .cse1) (or (not (<= |old(~waterLevel~0)| 1)) .cse0 (and .cse4 (<= ~waterLevel~0 1) .cse2) .cse3 .cse5) (or .cse6 .cse3 .cse4) (or .cse6 .cse3 (<= 1 ~waterLevel~0) .cse5))) [2020-07-21 15:42:57,490 INFO L268 CegarLoopResult]: For program point timeShiftEXIT(lines 697 720) no Hoare annotation was computed. [2020-07-21 15:42:57,490 INFO L268 CegarLoopResult]: For program point timeShiftFINAL(lines 697 720) no Hoare annotation was computed. [2020-07-21 15:42:57,490 INFO L264 CegarLoopResult]: At program point L710(line 710) the Hoare annotation is: (let ((.cse4 (not (<= 2 |old(~waterLevel~0)|))) (.cse1 (not (<= 1 ~systemActive~0))) (.cse2 (= 0 ~pumpRunning~0)) (.cse3 (<= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (not (= 0 |old(~pumpRunning~0)|)))) (and (or (not (= 0 ~systemActive~0)) .cse0) (or .cse1 (and .cse2 .cse3) .cse0 .cse4) (or .cse1 .cse4 (and (<= ~waterLevel~0 |old(~waterLevel~0)|) (<= |old(~waterLevel~0)| (+ ~waterLevel~0 1)))) (or (not (<= |old(~waterLevel~0)| 1)) .cse1 (and .cse2 (<= ~waterLevel~0 1) .cse3) .cse0 (not (<= 1 |old(~waterLevel~0)|))))) [2020-07-21 15:42:57,490 INFO L264 CegarLoopResult]: At program point L708(lines 708 714) the Hoare annotation is: (let ((.cse7 (not (= 0 ~systemActive~0))) (.cse5 (not (= 0 |old(~pumpRunning~0)|))) (.cse6 (not (<= 1 |old(~waterLevel~0)|))) (.cse0 (not (<= 1 ~systemActive~0))) (.cse1 (<= 2 ~waterLevel~0)) (.cse2 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse4 (= 0 ~pumpRunning~0))) (and (let ((.cse3 (<= |old(~waterLevel~0)| ~waterLevel~0))) (or .cse0 (and .cse1 .cse2 .cse3) (and .cse4 (<= ~waterLevel~0 1) .cse3) .cse5 .cse6)) (or .cse7 .cse5 .cse4) (or .cse7 .cse5 (<= 1 ~waterLevel~0) .cse6) (let ((.cse8 (<= |old(~waterLevel~0)| (+ ~waterLevel~0 1)))) (or .cse0 (and .cse1 .cse2 .cse8) (and .cse2 .cse8 .cse4) (not (<= 2 |old(~waterLevel~0)|)))))) [2020-07-21 15:42:57,491 INFO L271 CegarLoopResult]: At program point L418-2(lines 418 432) the Hoare annotation is: true [2020-07-21 15:42:57,491 INFO L268 CegarLoopResult]: For program point cleanupEXIT(lines 408 437) no Hoare annotation was computed. [2020-07-21 15:42:57,491 INFO L271 CegarLoopResult]: At program point L414(line 414) the Hoare annotation is: true [2020-07-21 15:42:57,491 INFO L268 CegarLoopResult]: For program point L414-1(line 414) no Hoare annotation was computed. [2020-07-21 15:42:57,491 INFO L271 CegarLoopResult]: At program point cleanupENTRY(lines 408 437) the Hoare annotation is: true [2020-07-21 15:42:57,491 INFO L271 CegarLoopResult]: At program point L433(lines 408 437) the Hoare annotation is: true [2020-07-21 15:42:57,491 INFO L268 CegarLoopResult]: For program point L429(line 429) no Hoare annotation was computed. [2020-07-21 15:42:57,491 INFO L268 CegarLoopResult]: For program point L422(lines 422 426) no Hoare annotation was computed. [2020-07-21 15:42:57,491 INFO L271 CegarLoopResult]: At program point L422-1(lines 422 426) the Hoare annotation is: true [2020-07-21 15:42:57,492 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 15:42:57,492 INFO L271 CegarLoopResult]: At program point isMethaneLevelCriticalENTRY(lines 617 625) the Hoare annotation is: true [2020-07-21 15:42:57,492 INFO L268 CegarLoopResult]: For program point isMethaneLevelCriticalFINAL(lines 617 625) no Hoare annotation was computed. [2020-07-21 15:42:57,492 INFO L268 CegarLoopResult]: For program point isMethaneLevelCriticalEXIT(lines 617 625) no Hoare annotation was computed. [2020-07-21 15:42:57,492 INFO L264 CegarLoopResult]: At program point lowerWaterLevelENTRY(lines 581 592) the Hoare annotation is: (or (not (<= 1 ~systemActive~0)) (not (<= 2 |old(~waterLevel~0)|)) (and (<= ~waterLevel~0 |old(~waterLevel~0)|) (<= |old(~waterLevel~0)| ~waterLevel~0))) [2020-07-21 15:42:57,492 INFO L268 CegarLoopResult]: For program point lowerWaterLevelEXIT(lines 581 592) no Hoare annotation was computed. [2020-07-21 15:42:57,492 INFO L268 CegarLoopResult]: For program point L585-1(lines 581 592) no Hoare annotation was computed. [2020-07-21 15:42:57,492 INFO L268 CegarLoopResult]: For program point setupEXIT(lines 465 471) no Hoare annotation was computed. [2020-07-21 15:42:57,492 INFO L271 CegarLoopResult]: At program point setupFINAL(lines 465 471) the Hoare annotation is: true [2020-07-21 15:42:57,492 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 15:42:57,493 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 1 ~waterLevel~0) (= 0 ~pumpRunning~0) (<= ~waterLevel~0 1) (<= 1 ~systemActive~0)) [2020-07-21 15:42:57,493 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 15:42:57,493 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 15:42:57,493 INFO L268 CegarLoopResult]: For program point L737(lines 737 745) no Hoare annotation was computed. [2020-07-21 15:42:57,493 INFO L264 CegarLoopResult]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 729 753) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|)) (= 0 ~pumpRunning~0)) [2020-07-21 15:42:57,493 INFO L264 CegarLoopResult]: At program point L735(line 735) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|)) (= 0 ~pumpRunning~0)) [2020-07-21 15:42:57,493 INFO L268 CegarLoopResult]: For program point L735-1(line 735) no Hoare annotation was computed. [2020-07-21 15:42:57,493 INFO L268 CegarLoopResult]: For program point L733(lines 733 750) no Hoare annotation was computed. [2020-07-21 15:42:57,493 INFO L268 CegarLoopResult]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 729 753) no Hoare annotation was computed. [2020-07-21 15:42:57,494 INFO L264 CegarLoopResult]: At program point L748(line 748) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|))) [2020-07-21 15:42:57,494 INFO L268 CegarLoopResult]: For program point L748-1(lines 729 753) no Hoare annotation was computed. [2020-07-21 15:42:57,494 INFO L264 CegarLoopResult]: At program point L743(line 743) the Hoare annotation is: (or (not (<= 1 ~waterLevel~0)) (not (<= 1 ~systemActive~0)) (not (= 0 |old(~pumpRunning~0)|)) (and (= 0 processEnvironment__wrappee__highWaterSensor_~tmp~5) (= 0 ~pumpRunning~0))) [2020-07-21 15:42:57,494 INFO L264 CegarLoopResult]: At program point L739(line 739) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~systemActive~0))) (.cse1 (not (= 0 |old(~pumpRunning~0)|)))) (and (or (not (<= 1 ~waterLevel~0)) .cse0 .cse1 (not (<= ~waterLevel~0 1))) (or .cse0 .cse1 (= 0 ~pumpRunning~0) (not (<= 2 ~waterLevel~0))))) [2020-07-21 15:42:57,494 INFO L268 CegarLoopResult]: For program point waterRiseEXIT(lines 593 604) no Hoare annotation was computed. [2020-07-21 15:42:57,494 INFO L268 CegarLoopResult]: For program point L597-1(lines 593 604) no Hoare annotation was computed. [2020-07-21 15:42:57,494 INFO L264 CegarLoopResult]: At program point waterRiseENTRY(lines 593 604) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~systemActive~0))) (.cse1 (<= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (not (= 0 ~pumpRunning~0))) (.cse3 (not (<= 1 |old(~waterLevel~0)|)))) (and (or .cse0 (not (<= 2 |old(~waterLevel~0)|)) (and (<= ~waterLevel~0 |old(~waterLevel~0)|) .cse1)) (or (not (<= |old(~waterLevel~0)| 1)) .cse0 (and (<= ~waterLevel~0 1) .cse1) .cse2 .cse3) (or (not (= 0 ~systemActive~0)) (<= 1 ~waterLevel~0) .cse2 .cse3))) [2020-07-21 15:42:57,494 INFO L268 CegarLoopResult]: For program point __automaton_failFINAL(lines 682 689) no Hoare annotation was computed. [2020-07-21 15:42:57,496 INFO L268 CegarLoopResult]: For program point __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION(line 686) no Hoare annotation was computed. [2020-07-21 15:42:57,497 INFO L271 CegarLoopResult]: At program point __automaton_failENTRY(lines 682 689) the Hoare annotation is: true [2020-07-21 15:42:57,497 INFO L268 CegarLoopResult]: For program point __automaton_failEXIT(lines 682 689) no Hoare annotation was computed. [2020-07-21 15:42:57,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:42:57 BoogieIcfgContainer [2020-07-21 15:42:57,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 15:42:57,524 INFO L168 Benchmark]: Toolchain (without parser) took 22685.93 ms. Allocated memory was 138.9 MB in the beginning and 491.3 MB in the end (delta: 352.3 MB). Free memory was 101.6 MB in the beginning and 427.4 MB in the end (delta: -325.8 MB). Peak memory consumption was 367.5 MB. Max. memory is 7.1 GB. [2020-07-21 15:42:57,524 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 15:42:57,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.79 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 101.2 MB in the beginning and 173.7 MB in the end (delta: -72.5 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. [2020-07-21 15:42:57,526 INFO L168 Benchmark]: Boogie Preprocessor took 88.12 ms. Allocated memory is still 203.9 MB. Free memory was 173.7 MB in the beginning and 167.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 7.1 GB. [2020-07-21 15:42:57,527 INFO L168 Benchmark]: RCFGBuilder took 1455.24 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 167.4 MB in the beginning and 192.0 MB in the end (delta: -24.6 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. [2020-07-21 15:42:57,527 INFO L168 Benchmark]: TraceAbstraction took 20460.38 ms. Allocated memory was 237.0 MB in the beginning and 491.3 MB in the end (delta: 254.3 MB). Free memory was 192.0 MB in the beginning and 427.4 MB in the end (delta: -235.4 MB). Peak memory consumption was 359.8 MB. Max. memory is 7.1 GB. [2020-07-21 15:42:57,530 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 675.79 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 101.2 MB in the beginning and 173.7 MB in the end (delta: -72.5 MB). Peak memory consumption was 30.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.12 ms. Allocated memory is still 203.9 MB. Free memory was 173.7 MB in the beginning and 167.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1455.24 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 167.4 MB in the beginning and 192.0 MB in the end (delta: -24.6 MB). Peak memory consumption was 82.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20460.38 ms. Allocated memory was 237.0 MB in the beginning and 491.3 MB in the end (delta: 254.3 MB). Free memory was 192.0 MB in the beginning and 427.4 MB in the end (delta: -235.4 MB). Peak memory consumption was 359.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 686]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 958]: Loop Invariant Derived loop invariant: ((!(\old(waterLevel) <= 1) || !(0 == \old(pumpRunning))) || !(1 <= \old(waterLevel))) || !(1 <= \old(systemActive)) - InvariantResult [Line: 418]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 408]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 959]: Loop Invariant Derived loop invariant: (((((!(\old(waterLevel) <= 1) || (((1 <= waterLevel && 0 == pumpRunning) && splverifierCounter <= 0) && 1 <= systemActive)) || !(0 == \old(pumpRunning))) || ((2 <= waterLevel && splverifierCounter <= 0) && 1 <= systemActive)) || !(1 <= \old(waterLevel))) || !(1 <= \old(systemActive))) || ((0 == systemActive && 0 == pumpRunning) && splverifierCounter <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 258 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.1s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2589 SDtfs, 1983 SDslu, 4553 SDs, 0 SdLazy, 4258 SolverSat, 1078 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2141 GetRequests, 2053 SyntacticMatches, 7 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1082occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 503 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 72 LocationsWithAnnotation, 2312 PreInvPairs, 2383 NumberOfFragments, 1332 HoareAnnotationTreeSize, 2312 FomulaSimplifications, 3844 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 72 FomulaSimplificationsInter, 6197 FormulaSimplificationTreeSizeReductionInter, 2.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1698 NumberOfCodeBlocks, 1464 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 2096 ConstructedInterpolants, 0 QuantifiedInterpolants, 576726 SizeOfPredicates, 45 NumberOfNonLiveVariables, 10523 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 611/698 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 correct! Received shutdown request...