/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:00:44,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:00:44,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:00:45,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:00:45,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:00:45,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:00:45,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:00:45,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:00:45,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:00:45,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:00:45,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:00:45,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:00:45,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:00:45,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:00:45,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:00:45,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:00:45,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:00:45,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:00:45,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:00:45,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:00:45,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:00:45,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:00:45,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:00:45,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:00:45,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 13:00:45,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 13:00:45,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 13:00:45,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 13:00:45,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 13:00:45,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 13:00:45,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 13:00:45,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 13:00:45,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 13:00:45,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 13:00:45,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 13:00:45,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 13:00:45,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 13:00:45,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 13:00:45,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:00:45,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:00:45,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:00:45,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 13:00:45,107 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:00:45,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:00:45,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:00:45,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:00:45,110 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:00:45,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:00:45,111 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:00:45,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:00:45,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:00:45,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:00:45,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:00:45,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:00:45,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:00:45,113 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:00:45,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:00:45,114 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:00:45,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:00:45,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:00:45,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:00:45,114 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:00:45,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:00:45,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:00:45,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:00:45,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:00:45,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:00:45,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:00:45,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:45,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:00:45,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:00:45,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 13:00:45,398 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:00:45,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:00:45,415 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:00:45,416 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:00:45,416 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:00:45,417 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2020-07-20 13:00:45,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c73ef9591/f80d427180d740cb98d7ca9c770906b9/FLAG31d4a1cbb [2020-07-20 13:00:46,147 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:00:46,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product38.cil.c [2020-07-20 13:00:46,163 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c73ef9591/f80d427180d740cb98d7ca9c770906b9/FLAG31d4a1cbb [2020-07-20 13:00:46,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c73ef9591/f80d427180d740cb98d7ca9c770906b9 [2020-07-20 13:00:46,414 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:00:46,417 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:00:46,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:00:46,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:00:46,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:00:46,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:00:46" (1/1) ... [2020-07-20 13:00:46,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2541ac32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:46, skipping insertion in model container [2020-07-20 13:00:46,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:00:46" (1/1) ... [2020-07-20 13:00:46,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:00:46,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:00:46,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:00:46,948 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:00:47,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:00:47,065 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:00:47,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47 WrapperNode [2020-07-20 13:00:47,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:00:47,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:00:47,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:00:47,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:00:47,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47" (1/1) ... [2020-07-20 13:00:47,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47" (1/1) ... [2020-07-20 13:00:47,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47" (1/1) ... [2020-07-20 13:00:47,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47" (1/1) ... [2020-07-20 13:00:47,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47" (1/1) ... [2020-07-20 13:00:47,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47" (1/1) ... [2020-07-20 13:00:47,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47" (1/1) ... [2020-07-20 13:00:47,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:00:47,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:00:47,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:00:47,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:00:47,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:00:47,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:00:47,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:00:47,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 13:00:47,236 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 13:00:47,236 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 13:00:47,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 13:00:47,237 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 13:00:47,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:00:47,237 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 13:00:47,237 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 13:00:47,238 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 13:00:47,238 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 13:00:47,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-20 13:00:47,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 13:00:47,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 13:00:47,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 13:00:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 13:00:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 13:00:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 13:00:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 13:00:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 13:00:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 13:00:47,240 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 13:00:47,240 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 13:00:47,240 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 13:00:47,240 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 13:00:47,240 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 13:00:47,240 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 13:00:47,241 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 13:00:47,241 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-20 13:00:47,241 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 13:00:47,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 13:00:47,241 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 13:00:47,241 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 13:00:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 13:00:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 13:00:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 13:00:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 13:00:47,242 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 13:00:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:00:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 13:00:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 13:00:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 13:00:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 13:00:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 13:00:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 13:00:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 13:00:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 13:00:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 13:00:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 13:00:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 13:00:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 13:00:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 13:00:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 13:00:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:00:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 13:00:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 13:00:47,245 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 13:00:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 13:00:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-20 13:00:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 13:00:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 13:00:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 13:00:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 13:00:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 13:00:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 13:00:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:00:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 13:00:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 13:00:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:00:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 13:00:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 13:00:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:00:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 13:00:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 13:00:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:00:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 13:00:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 13:00:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 13:00:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 13:00:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 13:00:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 13:00:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-20 13:00:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 13:00:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 13:00:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 13:00:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 13:00:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 13:00:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 13:00:47,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:00:47,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 13:00:47,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:00:48,335 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:00:48,335 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 13:00:48,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:00:48 BoogieIcfgContainer [2020-07-20 13:00:48,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:00:48,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:00:48,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:00:48,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:00:48,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:00:46" (1/3) ... [2020-07-20 13:00:48,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611ff498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:00:48, skipping insertion in model container [2020-07-20 13:00:48,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:00:47" (2/3) ... [2020-07-20 13:00:48,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611ff498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:00:48, skipping insertion in model container [2020-07-20 13:00:48,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:00:48" (3/3) ... [2020-07-20 13:00:48,349 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product38.cil.c [2020-07-20 13:00:48,358 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:00:48,366 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:00:48,377 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:00:48,399 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:00:48,400 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:00:48,400 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:00:48,400 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:00:48,400 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:00:48,401 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:00:48,401 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:00:48,401 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:00:48,425 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-07-20 13:00:48,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 13:00:48,435 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:48,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:00:48,437 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:48,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:48,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1406508770, now seen corresponding path program 1 times [2020-07-20 13:00:48,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:48,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057703203] [2020-07-20 13:00:48,453 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:48,926 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:00:48,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:00:48,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:00:48,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:00:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:00:48,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:00:48,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057703203] [2020-07-20 13:00:48,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:00:48,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:00:48,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737544882] [2020-07-20 13:00:48,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:00:48,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:00:48,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:00:48,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:00:48,995 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 2 states. [2020-07-20 13:00:49,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:00:49,038 INFO L93 Difference]: Finished difference Result 254 states and 315 transitions. [2020-07-20 13:00:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:00:49,039 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 13:00:49,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:00:49,053 INFO L225 Difference]: With dead ends: 254 [2020-07-20 13:00:49,054 INFO L226 Difference]: Without dead ends: 127 [2020-07-20 13:00:49,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:00:49,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-07-20 13:00:49,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2020-07-20 13:00:49,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-07-20 13:00:49,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 149 transitions. [2020-07-20 13:00:49,126 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 149 transitions. Word has length 46 [2020-07-20 13:00:49,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:00:49,126 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 149 transitions. [2020-07-20 13:00:49,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:00:49,127 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 149 transitions. [2020-07-20 13:00:49,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 13:00:49,131 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:49,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:00:49,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:49,345 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:49,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:49,346 INFO L82 PathProgramCache]: Analyzing trace with hash 297997714, now seen corresponding path program 1 times [2020-07-20 13:00:49,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:49,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238633113] [2020-07-20 13:00:49,348 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:49,805 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:00:49,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:00:49,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 13:00:49,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:00:49,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:00:49,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:00:49,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238633113] [2020-07-20 13:00:49,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:00:49,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:00:49,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710999776] [2020-07-20 13:00:49,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:00:49,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:00:49,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:00:49,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:00:49,856 INFO L87 Difference]: Start difference. First operand 127 states and 149 transitions. Second operand 3 states. [2020-07-20 13:00:49,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:00:49,876 INFO L93 Difference]: Finished difference Result 199 states and 233 transitions. [2020-07-20 13:00:49,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:00:49,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 13:00:49,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:00:49,880 INFO L225 Difference]: With dead ends: 199 [2020-07-20 13:00:49,880 INFO L226 Difference]: Without dead ends: 118 [2020-07-20 13:00:49,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:00:49,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-20 13:00:49,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-07-20 13:00:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-07-20 13:00:49,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-07-20 13:00:49,902 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 47 [2020-07-20 13:00:49,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:00:49,904 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-07-20 13:00:49,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:00:49,904 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-07-20 13:00:49,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 13:00:49,908 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:49,909 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] [2020-07-20 13:00:50,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:50,124 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:50,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:50,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1416539958, now seen corresponding path program 1 times [2020-07-20 13:00:50,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:50,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466825137] [2020-07-20 13:00:50,126 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:50,631 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:00:50,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:00:50,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 13:00:50,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:00:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:00:50,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:00:50,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466825137] [2020-07-20 13:00:50,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:00:50,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:00:50,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45134373] [2020-07-20 13:00:50,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:00:50,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:00:50,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:00:50,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:00:50,696 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 3 states. [2020-07-20 13:00:50,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:00:50,728 INFO L93 Difference]: Finished difference Result 212 states and 251 transitions. [2020-07-20 13:00:50,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:00:50,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-20 13:00:50,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:00:50,732 INFO L225 Difference]: With dead ends: 212 [2020-07-20 13:00:50,732 INFO L226 Difference]: Without dead ends: 118 [2020-07-20 13:00:50,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:00:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-20 13:00:50,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-07-20 13:00:50,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-07-20 13:00:50,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2020-07-20 13:00:50,762 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 52 [2020-07-20 13:00:50,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:00:50,762 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2020-07-20 13:00:50,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:00:50,762 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2020-07-20 13:00:50,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-20 13:00:50,770 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:50,770 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] [2020-07-20 13:00:50,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:50,979 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:50,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:50,979 INFO L82 PathProgramCache]: Analyzing trace with hash -819223945, now seen corresponding path program 1 times [2020-07-20 13:00:50,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:50,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403611818] [2020-07-20 13:00:50,981 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:51,417 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:00:51,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:00:51,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 13:00:51,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:00:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:00:51,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:00:51,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403611818] [2020-07-20 13:00:51,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:00:51,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:00:51,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119068177] [2020-07-20 13:00:51,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:00:51,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:00:51,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:00:51,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:00:51,492 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand 6 states. [2020-07-20 13:00:52,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:00:52,142 INFO L93 Difference]: Finished difference Result 293 states and 355 transitions. [2020-07-20 13:00:52,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 13:00:52,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-07-20 13:00:52,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:00:52,145 INFO L225 Difference]: With dead ends: 293 [2020-07-20 13:00:52,145 INFO L226 Difference]: Without dead ends: 199 [2020-07-20 13:00:52,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 13:00:52,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-07-20 13:00:52,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 183. [2020-07-20 13:00:52,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-07-20 13:00:52,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 206 transitions. [2020-07-20 13:00:52,170 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 206 transitions. Word has length 65 [2020-07-20 13:00:52,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:00:52,171 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 206 transitions. [2020-07-20 13:00:52,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:00:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 206 transitions. [2020-07-20 13:00:52,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 13:00:52,177 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:52,177 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] [2020-07-20 13:00:52,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:52,391 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:52,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:52,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1180966768, now seen corresponding path program 1 times [2020-07-20 13:00:52,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:52,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072410263] [2020-07-20 13:00:52,394 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:52,825 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:00:52,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:00:52,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 13:00:52,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:00:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:00:52,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:00:52,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072410263] [2020-07-20 13:00:52,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:00:52,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:00:52,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302243397] [2020-07-20 13:00:52,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:00:52,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:00:52,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:00:52,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:00:52,882 INFO L87 Difference]: Start difference. First operand 183 states and 206 transitions. Second operand 6 states. [2020-07-20 13:00:53,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:00:53,083 INFO L93 Difference]: Finished difference Result 190 states and 214 transitions. [2020-07-20 13:00:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 13:00:53,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-07-20 13:00:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:00:53,087 INFO L225 Difference]: With dead ends: 190 [2020-07-20 13:00:53,087 INFO L226 Difference]: Without dead ends: 187 [2020-07-20 13:00:53,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 13:00:53,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-07-20 13:00:53,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2020-07-20 13:00:53,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-07-20 13:00:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 205 transitions. [2020-07-20 13:00:53,104 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 205 transitions. Word has length 79 [2020-07-20 13:00:53,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:00:53,105 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 205 transitions. [2020-07-20 13:00:53,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:00:53,105 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 205 transitions. [2020-07-20 13:00:53,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-07-20 13:00:53,106 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:53,106 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] [2020-07-20 13:00:53,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:53,320 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:53,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:53,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1354545370, now seen corresponding path program 1 times [2020-07-20 13:00:53,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:53,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041447039] [2020-07-20 13:00:53,323 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:53,669 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:00:53,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:00:53,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 13:00:53,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:00:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:00:53,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:00:53,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041447039] [2020-07-20 13:00:53,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:00:53,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:00:53,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618685795] [2020-07-20 13:00:53,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:00:53,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:00:53,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:00:53,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:00:53,714 INFO L87 Difference]: Start difference. First operand 183 states and 205 transitions. Second operand 6 states. [2020-07-20 13:00:53,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:00:53,746 INFO L93 Difference]: Finished difference Result 347 states and 395 transitions. [2020-07-20 13:00:53,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:00:53,747 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-07-20 13:00:53,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:00:53,749 INFO L225 Difference]: With dead ends: 347 [2020-07-20 13:00:53,749 INFO L226 Difference]: Without dead ends: 188 [2020-07-20 13:00:53,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 13:00:53,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-07-20 13:00:53,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-07-20 13:00:53,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-07-20 13:00:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 210 transitions. [2020-07-20 13:00:53,766 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 210 transitions. Word has length 80 [2020-07-20 13:00:53,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:00:53,766 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 210 transitions. [2020-07-20 13:00:53,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:00:53,767 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 210 transitions. [2020-07-20 13:00:53,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-07-20 13:00:53,768 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:53,768 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] [2020-07-20 13:00:53,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:53,984 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:53,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:53,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1377177624, now seen corresponding path program 1 times [2020-07-20 13:00:53,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:53,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016714074] [2020-07-20 13:00:53,987 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:54,307 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:00:54,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:00:54,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 13:00:54,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:00:54,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:00:54,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:00:54,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016714074] [2020-07-20 13:00:54,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:00:54,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 13:00:54,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59751202] [2020-07-20 13:00:54,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 13:00:54,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:00:54,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 13:00:54,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:00:54,340 INFO L87 Difference]: Start difference. First operand 188 states and 210 transitions. Second operand 5 states. [2020-07-20 13:00:54,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:00:54,365 INFO L93 Difference]: Finished difference Result 359 states and 411 transitions. [2020-07-20 13:00:54,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 13:00:54,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-07-20 13:00:54,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:00:54,371 INFO L225 Difference]: With dead ends: 359 [2020-07-20 13:00:54,373 INFO L226 Difference]: Without dead ends: 195 [2020-07-20 13:00:54,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:00:54,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-07-20 13:00:54,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2020-07-20 13:00:54,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-07-20 13:00:54,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 214 transitions. [2020-07-20 13:00:54,397 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 214 transitions. Word has length 80 [2020-07-20 13:00:54,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:00:54,397 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 214 transitions. [2020-07-20 13:00:54,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 13:00:54,398 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 214 transitions. [2020-07-20 13:00:54,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-07-20 13:00:54,399 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:54,399 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] [2020-07-20 13:00:54,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:54,614 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:54,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:54,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1892297673, now seen corresponding path program 1 times [2020-07-20 13:00:54,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:54,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940517084] [2020-07-20 13:00:54,616 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:54,918 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:00:54,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:00:54,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 13:00:54,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:00:54,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:00:54,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:00:54,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940517084] [2020-07-20 13:00:54,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:00:54,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 13:00:54,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108802254] [2020-07-20 13:00:54,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 13:00:54,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:00:54,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 13:00:54,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:00:54,965 INFO L87 Difference]: Start difference. First operand 192 states and 214 transitions. Second operand 3 states. [2020-07-20 13:00:55,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:00:55,000 INFO L93 Difference]: Finished difference Result 500 states and 584 transitions. [2020-07-20 13:00:55,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 13:00:55,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-07-20 13:00:55,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:00:55,003 INFO L225 Difference]: With dead ends: 500 [2020-07-20 13:00:55,003 INFO L226 Difference]: Without dead ends: 332 [2020-07-20 13:00:55,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 13:00:55,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-07-20 13:00:55,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 329. [2020-07-20 13:00:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-07-20 13:00:55,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 378 transitions. [2020-07-20 13:00:55,029 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 378 transitions. Word has length 80 [2020-07-20 13:00:55,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:00:55,030 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 378 transitions. [2020-07-20 13:00:55,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 13:00:55,030 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 378 transitions. [2020-07-20 13:00:55,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-20 13:00:55,032 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:55,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:00:55,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:55,246 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:55,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:55,247 INFO L82 PathProgramCache]: Analyzing trace with hash -2014686127, now seen corresponding path program 1 times [2020-07-20 13:00:55,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:55,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120693769] [2020-07-20 13:00:55,248 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:55,635 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:00:55,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:00:55,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 13:00:55,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:00:55,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:00:55,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:00:55,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120693769] [2020-07-20 13:00:55,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:00:55,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 13:00:55,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229293808] [2020-07-20 13:00:55,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 13:00:55,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:00:55,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 13:00:55,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:00:55,681 INFO L87 Difference]: Start difference. First operand 329 states and 378 transitions. Second operand 6 states. [2020-07-20 13:00:55,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:00:55,902 INFO L93 Difference]: Finished difference Result 920 states and 1094 transitions. [2020-07-20 13:00:55,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 13:00:55,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-07-20 13:00:55,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:00:55,908 INFO L225 Difference]: With dead ends: 920 [2020-07-20 13:00:55,908 INFO L226 Difference]: Without dead ends: 615 [2020-07-20 13:00:55,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 13:00:55,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-07-20 13:00:55,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 607. [2020-07-20 13:00:55,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2020-07-20 13:00:55,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 700 transitions. [2020-07-20 13:00:55,974 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 700 transitions. Word has length 84 [2020-07-20 13:00:55,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:00:55,977 INFO L479 AbstractCegarLoop]: Abstraction has 607 states and 700 transitions. [2020-07-20 13:00:55,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 13:00:55,977 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 700 transitions. [2020-07-20 13:00:55,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-20 13:00:55,982 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:00:55,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:00:56,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:56,196 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:00:56,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:00:56,197 INFO L82 PathProgramCache]: Analyzing trace with hash 166319437, now seen corresponding path program 1 times [2020-07-20 13:00:56,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:00:56,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789269548] [2020-07-20 13:00:56,198 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:56,628 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:00:56,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:00:56,628 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:00:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:00:56,787 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:00:57,052 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:00:57,052 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:00:57,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:00:57,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:00:57 BoogieIcfgContainer [2020-07-20 13:00:57,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:00:57,478 INFO L168 Benchmark]: Toolchain (without parser) took 11059.11 ms. Allocated memory was 145.8 MB in the beginning and 308.3 MB in the end (delta: 162.5 MB). Free memory was 102.3 MB in the beginning and 254.8 MB in the end (delta: -152.5 MB). Peak memory consumption was 174.0 MB. Max. memory is 7.1 GB. [2020-07-20 13:00:57,479 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 13:00:57,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.88 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 101.9 MB in the beginning and 172.0 MB in the end (delta: -70.1 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-07-20 13:00:57,480 INFO L168 Benchmark]: Boogie Preprocessor took 94.57 ms. Allocated memory is still 203.9 MB. Free memory was 172.0 MB in the beginning and 167.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-07-20 13:00:57,484 INFO L168 Benchmark]: RCFGBuilder took 1178.62 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 167.4 MB in the beginning and 196.9 MB in the end (delta: -29.5 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:00:57,485 INFO L168 Benchmark]: TraceAbstraction took 9131.58 ms. Allocated memory was 237.5 MB in the beginning and 308.3 MB in the end (delta: 70.8 MB). Free memory was 196.9 MB in the beginning and 254.8 MB in the end (delta: -57.9 MB). Peak memory consumption was 176.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:00:57,490 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 648.88 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 101.9 MB in the beginning and 172.0 MB in the end (delta: -70.1 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.57 ms. Allocated memory is still 203.9 MB. Free memory was 172.0 MB in the beginning and 167.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1178.62 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 167.4 MB in the beginning and 196.9 MB in the end (delta: -29.5 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9131.58 ms. Allocated memory was 237.5 MB in the beginning and 308.3 MB in the end (delta: 70.8 MB). Free memory was 196.9 MB in the beginning and 254.8 MB in the end (delta: -57.9 MB). Peak memory consumption was 176.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 837]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L377] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L580] int pumpRunning = 0; [L581] int systemActive = 1; [L843] int waterLevel = 1; [L844] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=96, \old(head)=85, \old(head)=56, \old(methaneLevelCritical)=89, \old(pumpRunning)=24, \old(systemActive)=94, \old(waterLevel)=37, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L121] int retValue_acc ; [L122] 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] [L126] 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] [L127] 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] [L128] 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] [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] 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] [L128] 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] [L128] tmp = valid_product() [L130] 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] [L132] 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] [L133] 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] [L112] 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] [L767] int splverifierCounter ; [L768] int tmp ; [L769] int tmp___0 ; [L770] int tmp___1 ; [L771] int tmp___2 ; [L774] 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] [L776] 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] [L778] 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] [L784] tmp = __VERIFIER_nondet_int() [L786] 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] [L788] 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] [L861] COND TRUE waterLevel < 2 [L862] 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] [L788] 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] [L794] tmp___0 = __VERIFIER_nondet_int() [L796] 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] [L798] 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] [L873] COND FALSE !(\read(methaneLevelCritical)) [L876] 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] [L798] 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] [L804] tmp___2 = __VERIFIER_nondet_int() [L806] COND FALSE !(\read(tmp___2)) [L812] tmp___1 = __VERIFIER_nondet_int() [L814] COND TRUE \read(tmp___1) 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___1=-1, tmp___2=0, waterLevel=2] [L821] 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] [L587] 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] [L594] 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] [L596] 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] [L642] 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] [L645] 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] [L660] CALL processEnvironment__wrappee__highWaterSensor() 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] [L616] 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] [L619] 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] [L621] 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] [L739] int retValue_acc ; [L740] int tmp ; [L741] 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] [L745] 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] [L923] 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] [L926] COND FALSE !(waterLevel < 2) [L930] retValue_acc = 0 [L931] 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] [L745] 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] [L745] tmp = isHighWaterSensorDry() [L747] COND FALSE !(\read(tmp)) [L750] 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] [L752] retValue_acc = tmp___0 [L753] 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] [L621] 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] [L621] tmp = isHighWaterLevel() [L623] 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] [L625] 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] [L670] 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] [L625] 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] [L660] RET processEnvironment__wrappee__highWaterSensor() 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] [L596] 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] [L602] 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] [L183] int tmp ; [L184] 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] [L188] 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] [L882] int retValue_acc ; [L885] retValue_acc = methaneLevelCritical [L886] 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] [L188] 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] [L188] tmp = isMethaneLevelCritical() [L190] 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] [L192] 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] [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] 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] [L192] 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] [L192] tmp___0 = isPumpRunning() [L194] 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] [L196] 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] [L837] __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 39 procedures, 229 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.8s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1326 SDtfs, 549 SDslu, 2224 SDs, 0 SdLazy, 503 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 611 GetRequests, 582 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=607occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 34 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 701 NumberOfCodeBlocks, 626 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 604 ConstructedInterpolants, 0 QuantifiedInterpolants, 75862 SizeOfPredicates, 20 NumberOfNonLiveVariables, 6140 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...