/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 10:35:13,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 10:35:13,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 10:35:14,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 10:35:14,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 10:35:14,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 10:35:14,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 10:35:14,023 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 10:35:14,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 10:35:14,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 10:35:14,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 10:35:14,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 10:35:14,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 10:35:14,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 10:35:14,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 10:35:14,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 10:35:14,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 10:35:14,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 10:35:14,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 10:35:14,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 10:35:14,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 10:35:14,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 10:35:14,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 10:35:14,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 10:35:14,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 10:35:14,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 10:35:14,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 10:35:14,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 10:35:14,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 10:35:14,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 10:35:14,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 10:35:14,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 10:35:14,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 10:35:14,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 10:35:14,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 10:35:14,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 10:35:14,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 10:35:14,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 10:35:14,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 10:35:14,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 10:35:14,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 10:35:14,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 10:35:14,078 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 10:35:14,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 10:35:14,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 10:35:14,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 10:35:14,080 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 10:35:14,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 10:35:14,081 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 10:35:14,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 10:35:14,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 10:35:14,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 10:35:14,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 10:35:14,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 10:35:14,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 10:35:14,082 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 10:35:14,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 10:35:14,082 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 10:35:14,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 10:35:14,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 10:35:14,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 10:35:14,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 10:35:14,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 10:35:14,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 10:35:14,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 10:35:14,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 10:35:14,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 10:35:14,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 10:35:14,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:14,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 10:35:14,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 10:35:14,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 10:35:14,366 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 10:35:14,379 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 10:35:14,382 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 10:35:14,384 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 10:35:14,384 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 10:35:14,385 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2020-07-21 10:35:14,456 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/833cd8d96/a28b9cc9a9ed42169d806ad70e540379/FLAG1cdb3abdd [2020-07-21 10:35:15,012 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 10:35:15,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2020-07-21 10:35:15,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/833cd8d96/a28b9cc9a9ed42169d806ad70e540379/FLAG1cdb3abdd [2020-07-21 10:35:15,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/833cd8d96/a28b9cc9a9ed42169d806ad70e540379 [2020-07-21 10:35:15,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 10:35:15,313 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 10:35:15,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 10:35:15,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 10:35:15,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 10:35:15,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:35:15" (1/1) ... [2020-07-21 10:35:15,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10106500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:15, skipping insertion in model container [2020-07-21 10:35:15,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:35:15" (1/1) ... [2020-07-21 10:35:15,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 10:35:15,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 10:35:15,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:35:15,820 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 10:35:15,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:35:15,952 INFO L208 MainTranslator]: Completed translation [2020-07-21 10:35:15,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:15 WrapperNode [2020-07-21 10:35:15,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 10:35:15,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 10:35:15,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 10:35:15,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 10:35:15,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:15" (1/1) ... [2020-07-21 10:35:15,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:15" (1/1) ... [2020-07-21 10:35:15,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:15" (1/1) ... [2020-07-21 10:35:15,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:15" (1/1) ... [2020-07-21 10:35:16,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:15" (1/1) ... [2020-07-21 10:35:16,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:15" (1/1) ... [2020-07-21 10:35:16,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:15" (1/1) ... [2020-07-21 10:35:16,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 10:35:16,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 10:35:16,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 10:35:16,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 10:35:16,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 10:35:16,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 10:35:16,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 10:35:16,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 10:35:16,125 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 10:35:16,126 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 10:35:16,126 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 10:35:16,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 10:35:16,126 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 10:35:16,126 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 10:35:16,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 10:35:16,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 10:35:16,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-21 10:35:16,127 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 10:35:16,127 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 10:35:16,127 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 10:35:16,127 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 10:35:16,128 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 10:35:16,128 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 10:35:16,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 10:35:16,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 10:35:16,128 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 10:35:16,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 10:35:16,128 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-21 10:35:16,129 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 10:35:16,129 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 10:35:16,129 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 10:35:16,129 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 10:35:16,129 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 10:35:16,129 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 10:35:16,130 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 10:35:16,130 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 10:35:16,130 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 10:35:16,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 10:35:16,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 10:35:16,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 10:35:16,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 10:35:16,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 10:35:16,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 10:35:16,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 10:35:16,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 10:35:16,131 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 10:35:16,131 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 10:35:16,132 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 10:35:16,132 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 10:35:16,132 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 10:35:16,132 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 10:35:16,132 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 10:35:16,132 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 10:35:16,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 10:35:16,133 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 10:35:16,133 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 10:35:16,133 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-21 10:35:16,133 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-21 10:35:16,133 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 10:35:16,133 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 10:35:16,133 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 10:35:16,134 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 10:35:16,134 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 10:35:16,134 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 10:35:16,134 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 10:35:16,134 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 10:35:16,134 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 10:35:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 10:35:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 10:35:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 10:35:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 10:35:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 10:35:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 10:35:16,135 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 10:35:16,136 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 10:35:16,136 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 10:35:16,136 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 10:35:16,136 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 10:35:16,136 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 10:35:16,136 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 10:35:16,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 10:35:16,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 10:35:16,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 10:35:16,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 10:35:16,137 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 10:35:16,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 10:35:16,137 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 10:35:16,138 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 10:35:16,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 10:35:16,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 10:35:16,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 10:35:16,138 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 10:35:16,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 10:35:16,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 10:35:16,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 10:35:17,176 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 10:35:17,177 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 10:35:17,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:35:17 BoogieIcfgContainer [2020-07-21 10:35:17,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 10:35:17,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 10:35:17,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 10:35:17,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 10:35:17,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:35:15" (1/3) ... [2020-07-21 10:35:17,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281497ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:35:17, skipping insertion in model container [2020-07-21 10:35:17,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:35:15" (2/3) ... [2020-07-21 10:35:17,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281497ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:35:17, skipping insertion in model container [2020-07-21 10:35:17,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:35:17" (3/3) ... [2020-07-21 10:35:17,192 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product35.cil.c [2020-07-21 10:35:17,203 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 10:35:17,211 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 10:35:17,226 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 10:35:17,249 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 10:35:17,249 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 10:35:17,249 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 10:35:17,249 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 10:35:17,249 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 10:35:17,250 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 10:35:17,250 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 10:35:17,250 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 10:35:17,272 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-07-21 10:35:17,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 10:35:17,281 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:17,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:35:17,283 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:17,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:17,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1896668179, now seen corresponding path program 1 times [2020-07-21 10:35:17,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:17,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366080593] [2020-07-21 10:35:17,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:17,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 10:35:17,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:35:17,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:17,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366080593] [2020-07-21 10:35:17,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:17,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 10:35:17,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027755551] [2020-07-21 10:35:17,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 10:35:17,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:17,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 10:35:17,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 10:35:17,617 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 2 states. [2020-07-21 10:35:17,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:17,664 INFO L93 Difference]: Finished difference Result 228 states and 283 transitions. [2020-07-21 10:35:17,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 10:35:17,666 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 10:35:17,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:17,680 INFO L225 Difference]: With dead ends: 228 [2020-07-21 10:35:17,680 INFO L226 Difference]: Without dead ends: 114 [2020-07-21 10:35:17,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 10:35:17,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-07-21 10:35:17,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-07-21 10:35:17,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-07-21 10:35:17,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-07-21 10:35:17,750 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 46 [2020-07-21 10:35:17,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:17,751 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-07-21 10:35:17,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 10:35:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-07-21 10:35:17,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 10:35:17,755 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:17,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:35:17,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:17,969 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:17,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:17,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1220507007, now seen corresponding path program 1 times [2020-07-21 10:35:17,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:17,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633804170] [2020-07-21 10:35:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:18,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 10:35:18,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:18,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:35:18,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:18,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633804170] [2020-07-21 10:35:18,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:18,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 10:35:18,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809695806] [2020-07-21 10:35:18,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 10:35:18,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:18,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 10:35:18,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:35:18,292 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 3 states. [2020-07-21 10:35:18,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:18,314 INFO L93 Difference]: Finished difference Result 168 states and 195 transitions. [2020-07-21 10:35:18,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 10:35:18,315 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 10:35:18,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:18,317 INFO L225 Difference]: With dead ends: 168 [2020-07-21 10:35:18,317 INFO L226 Difference]: Without dead ends: 105 [2020-07-21 10:35:18,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:35:18,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-21 10:35:18,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2020-07-21 10:35:18,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-21 10:35:18,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-07-21 10:35:18,330 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 47 [2020-07-21 10:35:18,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:18,330 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-07-21 10:35:18,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 10:35:18,330 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-07-21 10:35:18,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-21 10:35:18,332 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:18,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:35:18,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:18,548 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:18,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:18,548 INFO L82 PathProgramCache]: Analyzing trace with hash -421022276, now seen corresponding path program 1 times [2020-07-21 10:35:18,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:18,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34198397] [2020-07-21 10:35:18,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:18,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 10:35:18,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:18,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:35:18,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:18,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34198397] [2020-07-21 10:35:18,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:18,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 10:35:18,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102774229] [2020-07-21 10:35:18,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 10:35:18,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:18,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 10:35:18,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:35:18,769 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 3 states. [2020-07-21 10:35:18,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:18,798 INFO L93 Difference]: Finished difference Result 265 states and 315 transitions. [2020-07-21 10:35:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 10:35:18,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-21 10:35:18,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:18,802 INFO L225 Difference]: With dead ends: 265 [2020-07-21 10:35:18,803 INFO L226 Difference]: Without dead ends: 184 [2020-07-21 10:35:18,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:35:18,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-07-21 10:35:18,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 174. [2020-07-21 10:35:18,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-07-21 10:35:18,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 205 transitions. [2020-07-21 10:35:18,830 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 205 transitions. Word has length 51 [2020-07-21 10:35:18,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:18,830 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 205 transitions. [2020-07-21 10:35:18,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 10:35:18,831 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 205 transitions. [2020-07-21 10:35:18,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 10:35:18,833 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:18,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:35:19,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:19,048 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:19,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:19,049 INFO L82 PathProgramCache]: Analyzing trace with hash 498542477, now seen corresponding path program 1 times [2020-07-21 10:35:19,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:19,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514139792] [2020-07-21 10:35:19,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:19,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 10:35:19,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:35:19,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:19,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514139792] [2020-07-21 10:35:19,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:19,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 10:35:19,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289608401] [2020-07-21 10:35:19,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 10:35:19,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:19,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 10:35:19,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 10:35:19,272 INFO L87 Difference]: Start difference. First operand 174 states and 205 transitions. Second operand 6 states. [2020-07-21 10:35:19,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:19,524 INFO L93 Difference]: Finished difference Result 424 states and 522 transitions. [2020-07-21 10:35:19,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 10:35:19,525 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-21 10:35:19,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:19,528 INFO L225 Difference]: With dead ends: 424 [2020-07-21 10:35:19,529 INFO L226 Difference]: Without dead ends: 274 [2020-07-21 10:35:19,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 10:35:19,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-07-21 10:35:19,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 266. [2020-07-21 10:35:19,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-07-21 10:35:19,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 319 transitions. [2020-07-21 10:35:19,559 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 319 transitions. Word has length 57 [2020-07-21 10:35:19,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:19,559 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 319 transitions. [2020-07-21 10:35:19,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 10:35:19,560 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 319 transitions. [2020-07-21 10:35:19,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-07-21 10:35:19,562 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:19,562 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] [2020-07-21 10:35:19,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:19,778 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:19,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:19,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1299137592, now seen corresponding path program 1 times [2020-07-21 10:35:19,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:19,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252598439] [2020-07-21 10:35:19,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:19,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 10:35:19,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:19,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:35:19,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:19,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252598439] [2020-07-21 10:35:19,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:19,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 10:35:19,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701550877] [2020-07-21 10:35:19,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 10:35:19,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:19,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 10:35:19,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:35:19,999 INFO L87 Difference]: Start difference. First operand 266 states and 319 transitions. Second operand 3 states. [2020-07-21 10:35:20,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:20,038 INFO L93 Difference]: Finished difference Result 742 states and 955 transitions. [2020-07-21 10:35:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 10:35:20,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-07-21 10:35:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:20,043 INFO L225 Difference]: With dead ends: 742 [2020-07-21 10:35:20,044 INFO L226 Difference]: Without dead ends: 500 [2020-07-21 10:35:20,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:35:20,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-07-21 10:35:20,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 497. [2020-07-21 10:35:20,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-07-21 10:35:20,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 624 transitions. [2020-07-21 10:35:20,091 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 624 transitions. Word has length 74 [2020-07-21 10:35:20,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:20,092 INFO L479 AbstractCegarLoop]: Abstraction has 497 states and 624 transitions. [2020-07-21 10:35:20,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 10:35:20,092 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 624 transitions. [2020-07-21 10:35:20,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-07-21 10:35:20,096 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:20,096 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] [2020-07-21 10:35:20,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:20,311 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:20,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:20,311 INFO L82 PathProgramCache]: Analyzing trace with hash -985725863, now seen corresponding path program 1 times [2020-07-21 10:35:20,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:20,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470008001] [2020-07-21 10:35:20,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:20,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 10:35:20,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:20,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:35:20,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:20,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470008001] [2020-07-21 10:35:20,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:20,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 10:35:20,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049362238] [2020-07-21 10:35:20,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 10:35:20,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:20,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 10:35:20,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 10:35:20,551 INFO L87 Difference]: Start difference. First operand 497 states and 624 transitions. Second operand 6 states. [2020-07-21 10:35:20,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:20,740 INFO L93 Difference]: Finished difference Result 1408 states and 1834 transitions. [2020-07-21 10:35:20,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 10:35:20,741 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-07-21 10:35:20,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:20,748 INFO L225 Difference]: With dead ends: 1408 [2020-07-21 10:35:20,748 INFO L226 Difference]: Without dead ends: 935 [2020-07-21 10:35:20,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 10:35:20,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-07-21 10:35:20,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 919. [2020-07-21 10:35:20,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-07-21 10:35:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1162 transitions. [2020-07-21 10:35:20,807 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1162 transitions. Word has length 74 [2020-07-21 10:35:20,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:20,808 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1162 transitions. [2020-07-21 10:35:20,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 10:35:20,808 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1162 transitions. [2020-07-21 10:35:20,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-21 10:35:20,812 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:20,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:35:21,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:21,028 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:21,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:21,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1060992747, now seen corresponding path program 1 times [2020-07-21 10:35:21,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:21,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967071008] [2020-07-21 10:35:21,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:21,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 10:35:21,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:21,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:35:21,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:21,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967071008] [2020-07-21 10:35:21,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:21,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 10:35:21,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942281593] [2020-07-21 10:35:21,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 10:35:21,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:21,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 10:35:21,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 10:35:21,223 INFO L87 Difference]: Start difference. First operand 919 states and 1162 transitions. Second operand 6 states. [2020-07-21 10:35:21,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:21,283 INFO L93 Difference]: Finished difference Result 1854 states and 2400 transitions. [2020-07-21 10:35:21,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 10:35:21,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-07-21 10:35:21,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:21,290 INFO L225 Difference]: With dead ends: 1854 [2020-07-21 10:35:21,290 INFO L226 Difference]: Without dead ends: 959 [2020-07-21 10:35:21,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 10:35:21,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2020-07-21 10:35:21,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2020-07-21 10:35:21,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2020-07-21 10:35:21,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1206 transitions. [2020-07-21 10:35:21,350 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1206 transitions. Word has length 78 [2020-07-21 10:35:21,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:21,351 INFO L479 AbstractCegarLoop]: Abstraction has 959 states and 1206 transitions. [2020-07-21 10:35:21,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 10:35:21,351 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1206 transitions. [2020-07-21 10:35:21,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-07-21 10:35:21,378 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:21,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:35:21,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:21,591 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:21,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:21,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1570465837, now seen corresponding path program 1 times [2020-07-21 10:35:21,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:21,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631650619] [2020-07-21 10:35:21,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:35:21,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 10:35:21,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:35:21,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 10:35:21,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:35:21,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631650619] [2020-07-21 10:35:21,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:35:21,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 10:35:21,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725759375] [2020-07-21 10:35:21,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 10:35:21,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:35:21,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 10:35:21,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 10:35:21,781 INFO L87 Difference]: Start difference. First operand 959 states and 1206 transitions. Second operand 5 states. [2020-07-21 10:35:21,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:35:21,824 INFO L93 Difference]: Finished difference Result 1858 states and 2396 transitions. [2020-07-21 10:35:21,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 10:35:21,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-07-21 10:35:21,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:35:21,830 INFO L225 Difference]: With dead ends: 1858 [2020-07-21 10:35:21,830 INFO L226 Difference]: Without dead ends: 923 [2020-07-21 10:35:21,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 10:35:21,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2020-07-21 10:35:21,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 923. [2020-07-21 10:35:21,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2020-07-21 10:35:21,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1138 transitions. [2020-07-21 10:35:21,875 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1138 transitions. Word has length 78 [2020-07-21 10:35:21,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:35:21,876 INFO L479 AbstractCegarLoop]: Abstraction has 923 states and 1138 transitions. [2020-07-21 10:35:21,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 10:35:21,876 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1138 transitions. [2020-07-21 10:35:21,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-21 10:35:21,878 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:35:21,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:35:22,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:22,092 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:35:22,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:35:22,093 INFO L82 PathProgramCache]: Analyzing trace with hash -341045236, now seen corresponding path program 1 times [2020-07-21 10:35:22,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:35:22,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119861464] [2020-07-21 10:35:22,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:35:22,294 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:35:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:35:22,439 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:35:22,717 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 10:35:22,718 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 10:35:22,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:35:23,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:35:23 BoogieIcfgContainer [2020-07-21 10:35:23,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 10:35:23,166 INFO L168 Benchmark]: Toolchain (without parser) took 7852.02 ms. Allocated memory was 138.4 MB in the beginning and 317.2 MB in the end (delta: 178.8 MB). Free memory was 101.8 MB in the beginning and 271.7 MB in the end (delta: -169.9 MB). Peak memory consumption was 165.0 MB. Max. memory is 7.1 GB. [2020-07-21 10:35:23,167 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 10:35:23,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.40 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 101.4 MB in the beginning and 172.3 MB in the end (delta: -71.0 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-07-21 10:35:23,175 INFO L168 Benchmark]: Boogie Preprocessor took 89.85 ms. Allocated memory is still 203.9 MB. Free memory was 172.3 MB in the beginning and 168.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-21 10:35:23,176 INFO L168 Benchmark]: RCFGBuilder took 1138.77 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 168.2 MB in the beginning and 200.6 MB in the end (delta: -32.3 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. [2020-07-21 10:35:23,180 INFO L168 Benchmark]: TraceAbstraction took 5977.48 ms. Allocated memory was 237.0 MB in the beginning and 317.2 MB in the end (delta: 80.2 MB). Free memory was 200.6 MB in the beginning and 271.7 MB in the end (delta: -71.1 MB). Peak memory consumption was 165.2 MB. Max. memory is 7.1 GB. [2020-07-21 10:35:23,187 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 637.40 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 101.4 MB in the beginning and 172.3 MB in the end (delta: -71.0 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.85 ms. Allocated memory is still 203.9 MB. Free memory was 172.3 MB in the beginning and 168.2 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1138.77 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 168.2 MB in the beginning and 200.6 MB in the end (delta: -32.3 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5977.48 ms. Allocated memory was 237.0 MB in the beginning and 317.2 MB in the end (delta: 80.2 MB). Free memory was 200.6 MB in the beginning and 271.7 MB in the end (delta: -71.1 MB). Peak memory consumption was 165.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 145]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L250] int pumpRunning = 0; [L251] int systemActive = 1; [L455] int cleanupTimeShifts = 4; [L720] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [\old(cleanupTimeShifts)=94, \old(head)=66, \old(head)=27, \old(methaneLevelCritical)=42, \old(pumpRunning)=37, \old(systemActive)=70, \old(waterLevel)=28, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L528] int retValue_acc ; [L529] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L533] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L534] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L535] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L446] int retValue_acc ; [L449] retValue_acc = 1 [L450] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L535] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L535] tmp = valid_product() [L537] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L539] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L540] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L522] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L181] int splverifierCounter ; [L182] int tmp ; [L183] int tmp___0 ; [L184] int tmp___1 ; [L185] int tmp___2 ; [L188] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L190] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L192] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L198] tmp = __VERIFIER_nondet_int() [L200] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L202] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L202] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L208] tmp___0 = __VERIFIER_nondet_int() [L210] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L212] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L212] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L218] tmp___2 = __VERIFIER_nondet_int() [L220] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, tmp___2=-1, waterLevel=2] [L235] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L257] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L264] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L266] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L286] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L289] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L291] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L383] int retValue_acc ; [L384] int tmp ; [L385] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L389] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L127] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L389] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L389] tmp = isHighWaterSensorDry() [L391] COND FALSE !(\read(tmp)) [L394] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L396] retValue_acc = tmp___0 [L397] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L291] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L291] tmp = isHighWaterLevel() [L293] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L295] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L314] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L295] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L266] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L272] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L152] int tmp ; [L153] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L157] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L157] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L157] tmp = isMethaneLevelCritical() [L159] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L161] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L338] int retValue_acc ; [L341] retValue_acc = pumpRunning [L342] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L161] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L161] tmp___0 = isPumpRunning() [L163] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L165] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L145] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1052 SDtfs, 322 SDslu, 1910 SDs, 0 SdLazy, 172 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 502 GetRequests, 478 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=959occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 37 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 587 NumberOfCodeBlocks, 587 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 497 ConstructedInterpolants, 0 QuantifiedInterpolants, 55205 SizeOfPredicates, 20 NumberOfNonLiveVariables, 5487 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...