/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 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 16:25:05,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 16:25:05,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 16:25:05,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 16:25:05,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 16:25:05,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 16:25:05,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 16:25:05,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 16:25:05,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 16:25:05,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 16:25:05,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 16:25:05,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 16:25:05,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 16:25:05,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 16:25:05,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 16:25:05,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 16:25:05,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 16:25:05,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 16:25:05,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 16:25:05,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 16:25:05,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 16:25:05,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 16:25:05,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 16:25:05,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 16:25:05,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 16:25:05,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 16:25:05,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 16:25:05,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 16:25:05,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 16:25:05,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 16:25:05,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 16:25:05,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 16:25:05,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 16:25:05,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 16:25:05,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 16:25:05,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 16:25:05,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 16:25:05,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 16:25:05,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 16:25:05,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 16:25:05,706 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 16:25:05,707 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 [2020-07-20 16:25:05,731 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 16:25:05,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 16:25:05,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 16:25:05,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 16:25:05,734 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 16:25:05,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 16:25:05,735 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 16:25:05,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 16:25:05,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 16:25:05,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 16:25:05,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 16:25:05,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 16:25:05,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 16:25:05,737 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 16:25:05,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 16:25:05,738 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 16:25:05,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 16:25:05,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 16:25:05,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 16:25:05,739 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 16:25:05,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 16:25:05,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 16:25:05,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 16:25:05,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 16:25:05,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 16:25:05,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 16:25:05,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:05,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 16:25:05,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 16:25:05,741 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 -> 4 [2020-07-20 16:25:06,040 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 16:25:06,058 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 16:25:06,062 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 16:25:06,063 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 16:25:06,064 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 16:25:06,064 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c [2020-07-20 16:25:06,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/504f5d039/00a6c4a6112b46dbb422e2b2fc6502f4/FLAG9f4fab196 [2020-07-20 16:25:06,665 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 16:25:06,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product37.cil.c [2020-07-20 16:25:06,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/504f5d039/00a6c4a6112b46dbb422e2b2fc6502f4/FLAG9f4fab196 [2020-07-20 16:25:06,950 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/504f5d039/00a6c4a6112b46dbb422e2b2fc6502f4 [2020-07-20 16:25:06,959 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 16:25:06,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 16:25:06,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 16:25:06,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 16:25:06,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 16:25:06,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:25:06" (1/1) ... [2020-07-20 16:25:06,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7011c986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:06, skipping insertion in model container [2020-07-20 16:25:06,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:25:06" (1/1) ... [2020-07-20 16:25:06,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 16:25:07,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 16:25:07,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:25:07,545 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 16:25:07,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:25:07,654 INFO L208 MainTranslator]: Completed translation [2020-07-20 16:25:07,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:07 WrapperNode [2020-07-20 16:25:07,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 16:25:07,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 16:25:07,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 16:25:07,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 16:25:07,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:07" (1/1) ... [2020-07-20 16:25:07,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:07" (1/1) ... [2020-07-20 16:25:07,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:07" (1/1) ... [2020-07-20 16:25:07,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:07" (1/1) ... [2020-07-20 16:25:07,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:07" (1/1) ... [2020-07-20 16:25:07,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:07" (1/1) ... [2020-07-20 16:25:07,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:07" (1/1) ... [2020-07-20 16:25:07,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 16:25:07,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 16:25:07,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 16:25:07,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 16:25:07,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:07" (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 [2020-07-20 16:25:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 16:25:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 16:25:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 16:25:07,818 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 16:25:07,818 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 16:25:07,818 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 16:25:07,818 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 16:25:07,818 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 16:25:07,819 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 16:25:07,819 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 16:25:07,820 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 16:25:07,820 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 16:25:07,820 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 16:25:07,820 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 16:25:07,820 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 16:25:07,821 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 16:25:07,821 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 16:25:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 16:25:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 16:25:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 16:25:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 16:25:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 16:25:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 16:25:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 16:25:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 16:25:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 16:25:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 16:25:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 16:25:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 16:25:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 16:25:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 16:25:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 16:25:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 16:25:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 16:25:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 16:25:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 16:25:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 16:25:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-07-20 16:25:07,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 16:25:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 16:25:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 16:25:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 16:25:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 16:25:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 16:25:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 16:25:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 16:25:07,828 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 16:25:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 16:25:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 16:25:07,829 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 16:25:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 16:25:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 16:25:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 16:25:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 16:25:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 16:25:07,830 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 16:25:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 16:25:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 16:25:07,831 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-07-20 16:25:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 16:25:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 16:25:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 16:25:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 16:25:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 16:25:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 16:25:07,832 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 16:25:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 16:25:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 16:25:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 16:25:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 16:25:07,833 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 16:25:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 16:25:07,834 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 16:25:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 16:25:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 16:25:07,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 16:25:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 16:25:07,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 16:25:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 16:25:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 16:25:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 16:25:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 16:25:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 16:25:07,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 16:25:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 16:25:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 16:25:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 16:25:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 16:25:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 16:25:07,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 16:25:08,872 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 16:25:08,872 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 16:25:08,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:25:08 BoogieIcfgContainer [2020-07-20 16:25:08,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 16:25:08,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 16:25:08,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 16:25:08,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 16:25:08,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:25:06" (1/3) ... [2020-07-20 16:25:08,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44390852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:25:08, skipping insertion in model container [2020-07-20 16:25:08,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:25:07" (2/3) ... [2020-07-20 16:25:08,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44390852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:25:08, skipping insertion in model container [2020-07-20 16:25:08,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:25:08" (3/3) ... [2020-07-20 16:25:08,885 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product37.cil.c [2020-07-20 16:25:08,895 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 16:25:08,903 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 16:25:08,918 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 16:25:08,943 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 16:25:08,943 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 16:25:08,943 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 16:25:08,943 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 16:25:08,944 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 16:25:08,944 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 16:25:08,944 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 16:25:08,944 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 16:25:08,968 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-07-20 16:25:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 16:25:08,978 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:08,979 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] [2020-07-20 16:25:08,979 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:08,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:08,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1144967718, now seen corresponding path program 1 times [2020-07-20 16:25:08,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:08,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916747098] [2020-07-20 16:25:08,997 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:25:09,492 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:25:09,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:09,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 16:25:09,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:09,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:25:09,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:09,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916747098] [2020-07-20 16:25:09,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:09,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 16:25:09,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273379300] [2020-07-20 16:25:09,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 16:25:09,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:09,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 16:25:09,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:25:09,574 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 2 states. [2020-07-20 16:25:09,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:09,624 INFO L93 Difference]: Finished difference Result 252 states and 311 transitions. [2020-07-20 16:25:09,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 16:25:09,626 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 16:25:09,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:09,641 INFO L225 Difference]: With dead ends: 252 [2020-07-20 16:25:09,641 INFO L226 Difference]: Without dead ends: 126 [2020-07-20 16:25:09,646 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 [2020-07-20 16:25:09,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-07-20 16:25:09,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-07-20 16:25:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-20 16:25:09,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-07-20 16:25:09,711 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 46 [2020-07-20 16:25:09,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:09,712 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-07-20 16:25:09,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 16:25:09,712 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-07-20 16:25:09,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 16:25:09,716 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:09,716 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] [2020-07-20 16:25:09,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:09,930 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:09,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:09,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1860542733, now seen corresponding path program 1 times [2020-07-20 16:25:09,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:09,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980937707] [2020-07-20 16:25:09,933 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:25:10,403 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:25:10,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:10,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 16:25:10,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:25:10,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:10,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980937707] [2020-07-20 16:25:10,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:10,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:25:10,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014837651] [2020-07-20 16:25:10,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:25:10,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:10,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:25:10,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:25:10,467 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 3 states. [2020-07-20 16:25:10,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:10,510 INFO L93 Difference]: Finished difference Result 201 states and 233 transitions. [2020-07-20 16:25:10,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:25:10,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 16:25:10,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:10,514 INFO L225 Difference]: With dead ends: 201 [2020-07-20 16:25:10,514 INFO L226 Difference]: Without dead ends: 117 [2020-07-20 16:25:10,518 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 [2020-07-20 16:25:10,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-07-20 16:25:10,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-07-20 16:25:10,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-07-20 16:25:10,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-07-20 16:25:10,541 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 47 [2020-07-20 16:25:10,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:10,542 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-07-20 16:25:10,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:25:10,542 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-07-20 16:25:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 16:25:10,549 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:10,549 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] [2020-07-20 16:25:10,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:10,765 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:10,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:10,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1943742618, now seen corresponding path program 1 times [2020-07-20 16:25:10,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:10,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053535365] [2020-07-20 16:25:10,768 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:25:11,174 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:25:11,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:11,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 16:25:11,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:25:11,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:11,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053535365] [2020-07-20 16:25:11,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:11,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 16:25:11,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989888861] [2020-07-20 16:25:11,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 16:25:11,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:11,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 16:25:11,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 16:25:11,217 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 3 states. [2020-07-20 16:25:11,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:11,245 INFO L93 Difference]: Finished difference Result 210 states and 247 transitions. [2020-07-20 16:25:11,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 16:25:11,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-20 16:25:11,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:11,251 INFO L225 Difference]: With dead ends: 210 [2020-07-20 16:25:11,251 INFO L226 Difference]: Without dead ends: 117 [2020-07-20 16:25:11,255 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 [2020-07-20 16:25:11,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-07-20 16:25:11,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-07-20 16:25:11,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-07-20 16:25:11,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 134 transitions. [2020-07-20 16:25:11,278 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 134 transitions. Word has length 51 [2020-07-20 16:25:11,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:11,280 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 134 transitions. [2020-07-20 16:25:11,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 16:25:11,280 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 134 transitions. [2020-07-20 16:25:11,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-20 16:25:11,282 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:11,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:25:11,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:11,487 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:11,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:11,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1699182139, now seen corresponding path program 1 times [2020-07-20 16:25:11,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:11,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1329819065] [2020-07-20 16:25:11,489 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:25:11,860 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:25:11,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:11,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 16:25:11,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:25:11,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:11,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1329819065] [2020-07-20 16:25:11,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:11,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:25:11,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504256582] [2020-07-20 16:25:11,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:25:11,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:11,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:25:11,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:25:11,929 INFO L87 Difference]: Start difference. First operand 117 states and 134 transitions. Second operand 6 states. [2020-07-20 16:25:12,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:12,489 INFO L93 Difference]: Finished difference Result 286 states and 345 transitions. [2020-07-20 16:25:12,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:25:12,490 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-07-20 16:25:12,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:12,493 INFO L225 Difference]: With dead ends: 286 [2020-07-20 16:25:12,493 INFO L226 Difference]: Without dead ends: 193 [2020-07-20 16:25:12,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 16:25:12,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-07-20 16:25:12,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 178. [2020-07-20 16:25:12,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-07-20 16:25:12,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 200 transitions. [2020-07-20 16:25:12,520 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 200 transitions. Word has length 64 [2020-07-20 16:25:12,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:12,520 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 200 transitions. [2020-07-20 16:25:12,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:25:12,521 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 200 transitions. [2020-07-20 16:25:12,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-20 16:25:12,522 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:12,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:25:12,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:12,737 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:12,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:12,738 INFO L82 PathProgramCache]: Analyzing trace with hash 906371281, now seen corresponding path program 1 times [2020-07-20 16:25:12,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:12,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179431270] [2020-07-20 16:25:12,739 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:25:13,118 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:25:13,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:13,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 16:25:13,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:13,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:25:13,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:13,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179431270] [2020-07-20 16:25:13,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:13,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:25:13,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286022825] [2020-07-20 16:25:13,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:25:13,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:13,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:25:13,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:25:13,185 INFO L87 Difference]: Start difference. First operand 178 states and 200 transitions. Second operand 6 states. [2020-07-20 16:25:13,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:13,448 INFO L93 Difference]: Finished difference Result 432 states and 516 transitions. [2020-07-20 16:25:13,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 16:25:13,450 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-07-20 16:25:13,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:13,456 INFO L225 Difference]: With dead ends: 432 [2020-07-20 16:25:13,457 INFO L226 Difference]: Without dead ends: 278 [2020-07-20 16:25:13,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 16:25:13,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-20 16:25:13,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-20 16:25:13,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-20 16:25:13,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 328 transitions. [2020-07-20 16:25:13,526 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 328 transitions. Word has length 78 [2020-07-20 16:25:13,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:13,526 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 328 transitions. [2020-07-20 16:25:13,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:25:13,527 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 328 transitions. [2020-07-20 16:25:13,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-07-20 16:25:13,532 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:13,533 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:25:13,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:13,748 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:13,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:13,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1074748620, now seen corresponding path program 1 times [2020-07-20 16:25:13,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:13,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026538592] [2020-07-20 16:25:13,751 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:25:14,094 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:25:14,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:14,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:25:14,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 16:25:14,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:14,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026538592] [2020-07-20 16:25:14,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:14,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:25:14,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101203358] [2020-07-20 16:25:14,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:25:14,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:14,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:25:14,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:25:14,174 INFO L87 Difference]: Start difference. First operand 278 states and 328 transitions. Second operand 6 states. [2020-07-20 16:25:14,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:14,230 INFO L93 Difference]: Finished difference Result 542 states and 654 transitions. [2020-07-20 16:25:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 16:25:14,233 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2020-07-20 16:25:14,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:14,238 INFO L225 Difference]: With dead ends: 542 [2020-07-20 16:25:14,238 INFO L226 Difference]: Without dead ends: 288 [2020-07-20 16:25:14,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 16:25:14,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-07-20 16:25:14,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2020-07-20 16:25:14,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-07-20 16:25:14,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 339 transitions. [2020-07-20 16:25:14,265 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 339 transitions. Word has length 126 [2020-07-20 16:25:14,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:14,266 INFO L479 AbstractCegarLoop]: Abstraction has 288 states and 339 transitions. [2020-07-20 16:25:14,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:25:14,266 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 339 transitions. [2020-07-20 16:25:14,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-07-20 16:25:14,268 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:14,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:25:14,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:14,471 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:14,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:14,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1101814222, now seen corresponding path program 1 times [2020-07-20 16:25:14,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:14,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536435787] [2020-07-20 16:25:14,473 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:25:14,620 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 16:25:14,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:14,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 16:25:14,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 16:25:14,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:14,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536435787] [2020-07-20 16:25:14,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:14,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 16:25:14,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374489359] [2020-07-20 16:25:14,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 16:25:14,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:14,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 16:25:14,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:25:14,670 INFO L87 Difference]: Start difference. First operand 288 states and 339 transitions. Second operand 5 states. [2020-07-20 16:25:14,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:14,700 INFO L93 Difference]: Finished difference Result 543 states and 658 transitions. [2020-07-20 16:25:14,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 16:25:14,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-07-20 16:25:14,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:14,703 INFO L225 Difference]: With dead ends: 543 [2020-07-20 16:25:14,703 INFO L226 Difference]: Without dead ends: 279 [2020-07-20 16:25:14,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 16:25:14,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-07-20 16:25:14,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2020-07-20 16:25:14,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-07-20 16:25:14,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 327 transitions. [2020-07-20 16:25:14,727 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 327 transitions. Word has length 126 [2020-07-20 16:25:14,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:14,728 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 327 transitions. [2020-07-20 16:25:14,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 16:25:14,728 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 327 transitions. [2020-07-20 16:25:14,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-07-20 16:25:14,730 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:14,731 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:25:14,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:14,945 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:14,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:14,946 INFO L82 PathProgramCache]: Analyzing trace with hash 572895183, now seen corresponding path program 1 times [2020-07-20 16:25:14,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:14,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66595557] [2020-07-20 16:25:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:25:15,210 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 16:25:15,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:15,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 16:25:15,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:25:15,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:15,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66595557] [2020-07-20 16:25:15,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:15,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:25:15,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155724219] [2020-07-20 16:25:15,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:25:15,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:15,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:25:15,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:25:15,326 INFO L87 Difference]: Start difference. First operand 279 states and 327 transitions. Second operand 6 states. [2020-07-20 16:25:16,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:16,002 INFO L93 Difference]: Finished difference Result 741 states and 929 transitions. [2020-07-20 16:25:16,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:25:16,003 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2020-07-20 16:25:16,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:16,009 INFO L225 Difference]: With dead ends: 741 [2020-07-20 16:25:16,009 INFO L226 Difference]: Without dead ends: 486 [2020-07-20 16:25:16,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 16:25:16,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-07-20 16:25:16,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 471. [2020-07-20 16:25:16,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-07-20 16:25:16,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 566 transitions. [2020-07-20 16:25:16,069 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 566 transitions. Word has length 126 [2020-07-20 16:25:16,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:16,069 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 566 transitions. [2020-07-20 16:25:16,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:25:16,069 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 566 transitions. [2020-07-20 16:25:16,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-07-20 16:25:16,072 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:16,072 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:25:16,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:16,287 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:16,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:16,288 INFO L82 PathProgramCache]: Analyzing trace with hash -2074968439, now seen corresponding path program 1 times [2020-07-20 16:25:16,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:16,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965997565] [2020-07-20 16:25:16,289 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:25:16,601 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:25:16,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:16,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:25:16,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 16:25:16,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 16:25:17,017 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 16:25:17,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965997565] [2020-07-20 16:25:17,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 16:25:17,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-07-20 16:25:17,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932251498] [2020-07-20 16:25:17,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 16:25:17,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:17,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 16:25:17,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-20 16:25:17,020 INFO L87 Difference]: Start difference. First operand 471 states and 566 transitions. Second operand 12 states. [2020-07-20 16:25:18,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:18,548 INFO L93 Difference]: Finished difference Result 1228 states and 1587 transitions. [2020-07-20 16:25:18,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-20 16:25:18,549 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-07-20 16:25:18,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:18,556 INFO L225 Difference]: With dead ends: 1228 [2020-07-20 16:25:18,556 INFO L226 Difference]: Without dead ends: 781 [2020-07-20 16:25:18,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 248 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-07-20 16:25:18,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-07-20 16:25:18,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 624. [2020-07-20 16:25:18,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2020-07-20 16:25:18,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 740 transitions. [2020-07-20 16:25:18,612 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 740 transitions. Word has length 130 [2020-07-20 16:25:18,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:18,613 INFO L479 AbstractCegarLoop]: Abstraction has 624 states and 740 transitions. [2020-07-20 16:25:18,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 16:25:18,613 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 740 transitions. [2020-07-20 16:25:18,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-07-20 16:25:18,617 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:18,617 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, 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] [2020-07-20 16:25:18,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:18,831 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:18,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:18,831 INFO L82 PathProgramCache]: Analyzing trace with hash 2003027262, now seen corresponding path program 1 times [2020-07-20 16:25:18,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:18,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008930757] [2020-07-20 16:25:18,832 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:25:19,187 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:25:19,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:19,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 31 conjunts are in the unsatisfiable core [2020-07-20 16:25:19,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:19,365 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-07-20 16:25:19,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:19,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008930757] [2020-07-20 16:25:19,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:19,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-20 16:25:19,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270074851] [2020-07-20 16:25:19,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 16:25:19,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:19,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 16:25:19,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-07-20 16:25:19,368 INFO L87 Difference]: Start difference. First operand 624 states and 740 transitions. Second operand 13 states. [2020-07-20 16:25:20,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:20,478 INFO L93 Difference]: Finished difference Result 1633 states and 1977 transitions. [2020-07-20 16:25:20,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 16:25:20,478 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 181 [2020-07-20 16:25:20,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:20,485 INFO L225 Difference]: With dead ends: 1633 [2020-07-20 16:25:20,485 INFO L226 Difference]: Without dead ends: 1033 [2020-07-20 16:25:20,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-07-20 16:25:20,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2020-07-20 16:25:20,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1026. [2020-07-20 16:25:20,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1026 states. [2020-07-20 16:25:20,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1224 transitions. [2020-07-20 16:25:20,555 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1224 transitions. Word has length 181 [2020-07-20 16:25:20,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:20,556 INFO L479 AbstractCegarLoop]: Abstraction has 1026 states and 1224 transitions. [2020-07-20 16:25:20,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 16:25:20,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1224 transitions. [2020-07-20 16:25:20,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-07-20 16:25:20,560 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:20,560 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:25:20,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:20,774 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:20,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:20,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1473308166, now seen corresponding path program 1 times [2020-07-20 16:25:20,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:20,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209033638] [2020-07-20 16:25:20,776 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:25:21,093 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:25:21,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:21,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 16:25:21,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-20 16:25:21,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:21,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209033638] [2020-07-20 16:25:21,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:21,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 16:25:21,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227510833] [2020-07-20 16:25:21,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 16:25:21,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:21,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 16:25:21,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 16:25:21,238 INFO L87 Difference]: Start difference. First operand 1026 states and 1224 transitions. Second operand 8 states. [2020-07-20 16:25:21,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:21,581 INFO L93 Difference]: Finished difference Result 2029 states and 2425 transitions. [2020-07-20 16:25:21,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 16:25:21,582 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 189 [2020-07-20 16:25:21,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:21,590 INFO L225 Difference]: With dead ends: 2029 [2020-07-20 16:25:21,591 INFO L226 Difference]: Without dead ends: 1027 [2020-07-20 16:25:21,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 16:25:21,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2020-07-20 16:25:21,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1024. [2020-07-20 16:25:21,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-07-20 16:25:21,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1196 transitions. [2020-07-20 16:25:21,674 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1196 transitions. Word has length 189 [2020-07-20 16:25:21,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:21,675 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1196 transitions. [2020-07-20 16:25:21,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 16:25:21,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1196 transitions. [2020-07-20 16:25:21,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-07-20 16:25:21,681 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:21,682 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:25:21,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:21,895 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:21,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:21,895 INFO L82 PathProgramCache]: Analyzing trace with hash -85200478, now seen corresponding path program 2 times [2020-07-20 16:25:21,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:21,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809290479] [2020-07-20 16:25:21,896 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:25:22,378 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:25:22,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:25:22,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 16:25:22,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:25:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-07-20 16:25:22,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:25:22,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809290479] [2020-07-20 16:25:22,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:25:22,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 16:25:22,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080816485] [2020-07-20 16:25:22,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 16:25:22,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:25:22,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 16:25:22,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 16:25:22,441 INFO L87 Difference]: Start difference. First operand 1024 states and 1196 transitions. Second operand 6 states. [2020-07-20 16:25:22,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:25:22,741 INFO L93 Difference]: Finished difference Result 1037 states and 1211 transitions. [2020-07-20 16:25:22,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 16:25:22,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2020-07-20 16:25:22,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:25:22,751 INFO L225 Difference]: With dead ends: 1037 [2020-07-20 16:25:22,751 INFO L226 Difference]: Without dead ends: 1034 [2020-07-20 16:25:22,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 16:25:22,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-07-20 16:25:22,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1024. [2020-07-20 16:25:22,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-07-20 16:25:22,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1193 transitions. [2020-07-20 16:25:22,832 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1193 transitions. Word has length 185 [2020-07-20 16:25:22,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:25:22,833 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1193 transitions. [2020-07-20 16:25:22,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 16:25:22,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1193 transitions. [2020-07-20 16:25:22,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-07-20 16:25:22,840 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:25:22,840 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, 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] [2020-07-20 16:25:23,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:23,054 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:25:23,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:25:23,054 INFO L82 PathProgramCache]: Analyzing trace with hash -775865217, now seen corresponding path program 1 times [2020-07-20 16:25:23,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:25:23,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550421787] [2020-07-20 16:25:23,055 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 16:25:23,401 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:25:23,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 16:25:23,402 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:25:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 16:25:23,485 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:25:23,763 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 16:25:23,763 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 16:25:23,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:25:24,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:25:24 BoogieIcfgContainer [2020-07-20 16:25:24,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 16:25:24,261 INFO L168 Benchmark]: Toolchain (without parser) took 17300.07 ms. Allocated memory was 139.5 MB in the beginning and 374.3 MB in the end (delta: 234.9 MB). Free memory was 103.6 MB in the beginning and 157.0 MB in the end (delta: -53.4 MB). Peak memory consumption was 181.5 MB. Max. memory is 7.1 GB. [2020-07-20 16:25:24,262 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 16:25:24,268 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.81 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 103.2 MB in the beginning and 174.3 MB in the end (delta: -71.1 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2020-07-20 16:25:24,269 INFO L168 Benchmark]: Boogie Preprocessor took 92.96 ms. Allocated memory is still 203.9 MB. Free memory was 174.3 MB in the beginning and 169.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-07-20 16:25:24,271 INFO L168 Benchmark]: RCFGBuilder took 1128.22 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 169.5 MB in the beginning and 198.9 MB in the end (delta: -29.3 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2020-07-20 16:25:24,275 INFO L168 Benchmark]: TraceAbstraction took 15380.03 ms. Allocated memory was 236.5 MB in the beginning and 374.3 MB in the end (delta: 137.9 MB). Free memory was 198.9 MB in the beginning and 157.0 MB in the end (delta: 41.9 MB). Peak memory consumption was 179.8 MB. Max. memory is 7.1 GB. [2020-07-20 16:25:24,280 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.81 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 103.2 MB in the beginning and 174.3 MB in the end (delta: -71.1 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.96 ms. Allocated memory is still 203.9 MB. Free memory was 174.3 MB in the beginning and 169.5 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1128.22 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 169.5 MB in the beginning and 198.9 MB in the end (delta: -29.3 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15380.03 ms. Allocated memory was 236.5 MB in the beginning and 374.3 MB in the end (delta: 137.9 MB). Free memory was 198.9 MB in the beginning and 157.0 MB in the end (delta: 41.9 MB). Peak memory consumption was 179.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 434]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L155] int pumpRunning = 0; [L156] int systemActive = 1; [L334] int cleanupTimeShifts = 4; [L440] int waterLevel = 1; [L441] int methaneLevelCritical = 0; [L703] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [\old(cleanupTimeShifts)=66, \old(head)=27, \old(head)=31, \old(methaneLevelCritical)=86, \old(pumpRunning)=38, \old(systemActive)=94, \old(waterLevel)=33, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L407] int retValue_acc ; [L408] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L412] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L413] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L414] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L414] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L414] tmp = valid_product() [L416] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L418] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L419] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L401] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L83] int splverifierCounter ; [L84] int tmp ; [L85] int tmp___0 ; [L86] int tmp___1 ; [L87] int tmp___2 ; [L90] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L92] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L94] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L100] tmp = __VERIFIER_nondet_int() [L102] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L104] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L458] COND TRUE waterLevel < 2 [L459] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L104] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L135] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L163] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L170] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L172] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L218] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L221] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L236] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L192] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L195] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L197] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L315] int retValue_acc ; [L316] int tmp ; [L317] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L321] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L520] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L523] COND FALSE !(waterLevel < 2) [L527] retValue_acc = 0 [L528] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L321] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L321] tmp = isHighWaterSensorDry() [L323] COND FALSE !(\read(tmp)) [L326] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L328] retValue_acc = tmp___0 [L329] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L197] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L197] tmp = isHighWaterLevel() [L199] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L201] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L246] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L201] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L236] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L172] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L178] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L901] int tmp ; [L902] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L906] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L906] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=2, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L906] tmp = getWaterLevel() [L908] COND FALSE !(tmp == 0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L178] RET __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L135] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L92] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L94] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L100] tmp = __VERIFIER_nondet_int() [L102] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2] [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2] [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L135] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L163] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L165] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L446] COND TRUE waterLevel > 0 [L447] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L165] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L170] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L172] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L218] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L221] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L223] CALL, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L259] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L263] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L479] int retValue_acc ; [L482] retValue_acc = methaneLevelCritical [L483] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L263] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L263] retValue_acc = isMethaneLevelCritical() [L265] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L223] RET, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L223] tmp = isMethaneAlarm() [L225] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L231] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L192] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L195] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L210] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L231] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L172] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L178] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L901] int tmp ; [L902] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L906] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L906] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, getWaterLevel()=1, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L906] tmp = getWaterLevel() [L908] COND FALSE !(tmp == 0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L178] RET __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L135] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L92] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L94] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L100] tmp = __VERIFIER_nondet_int() [L102] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L110] tmp___0 = __VERIFIER_nondet_int() [L112] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L120] tmp___2 = __VERIFIER_nondet_int() [L122] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=1] [L135] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L163] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L165] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L446] COND TRUE waterLevel > 0 [L447] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L165] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L170] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L172] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L218] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L221] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L223] CALL, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L259] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L263] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L479] int retValue_acc ; [L482] retValue_acc = methaneLevelCritical [L483] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L263] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L263] retValue_acc = isMethaneLevelCritical() [L265] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L223] RET, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L223] tmp = isMethaneAlarm() [L225] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L231] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L192] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L195] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L210] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L231] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L172] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L178] CALL __utac_acc__Specification4_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L901] int tmp ; [L902] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L906] CALL, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L511] int retValue_acc ; [L514] retValue_acc = waterLevel [L515] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L906] RET, EXPR getWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, getWaterLevel()=0, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L906] tmp = getWaterLevel() [L908] COND TRUE tmp == 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L910] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L270] int retValue_acc ; [L273] retValue_acc = pumpRunning [L274] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L910] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L910] tmp___0 = isPumpRunning() [L912] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=0] [L914] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L434] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.0s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1858 SDtfs, 1125 SDslu, 4052 SDs, 0 SdLazy, 2688 SolverSat, 470 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1493 GetRequests, 1416 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1026occurred in iteration=10, 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, 12 MinimizatonAttempts, 207 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1534 NumberOfCodeBlocks, 1266 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 1466 ConstructedInterpolants, 0 QuantifiedInterpolants, 335327 SizeOfPredicates, 37 NumberOfNonLiveVariables, 8663 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 396/409 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...