/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:50:35,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:50:35,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:50:35,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:50:35,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:50:36,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:50:36,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:50:36,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:50:36,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:50:36,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:50:36,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:50:36,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:50:36,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:50:36,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:50:36,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:50:36,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:50:36,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:50:36,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:50:36,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:50:36,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:50:36,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:50:36,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:50:36,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:50:36,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:50:36,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 12:50:36,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 12:50:36,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 12:50:36,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 12:50:36,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 12:50:36,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 12:50:36,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 12:50:36,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 12:50:36,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 12:50:36,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 12:50:36,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 12:50:36,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 12:50:36,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 12:50:36,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 12:50:36,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:50:36,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:50:36,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:50:36,066 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 12:50:36,093 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:50:36,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:50:36,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:50:36,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:50:36,097 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:50:36,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:50:36,098 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:50:36,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:50:36,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:50:36,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:50:36,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:50:36,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:50:36,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:50:36,100 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:50:36,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:50:36,100 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:50:36,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:50:36,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:50:36,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:50:36,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:50:36,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:50:36,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:50:36,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:50:36,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:50:36,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:50:36,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:50:36,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:36,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:50:36,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:50:36,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 12:50:36,415 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:50:36,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:50:36,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:50:36,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:50:36,433 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:50:36,434 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-07-21 12:50:36,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518cfe7e0/80c8779f0d7e4463a1a5214dc84683c8/FLAGf4a5e3c0a [2020-07-21 12:50:37,042 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:50:37,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-07-21 12:50:37,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518cfe7e0/80c8779f0d7e4463a1a5214dc84683c8/FLAGf4a5e3c0a [2020-07-21 12:50:37,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/518cfe7e0/80c8779f0d7e4463a1a5214dc84683c8 [2020-07-21 12:50:37,332 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:50:37,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:50:37,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:50:37,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:50:37,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:50:37,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:50:37" (1/1) ... [2020-07-21 12:50:37,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29176e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:37, skipping insertion in model container [2020-07-21 12:50:37,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:50:37" (1/1) ... [2020-07-21 12:50:37,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:50:37,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:50:37,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:50:37,936 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:50:38,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:50:38,039 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:50:38,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:38 WrapperNode [2020-07-21 12:50:38,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:50:38,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:50:38,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:50:38,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:50:38,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:38" (1/1) ... [2020-07-21 12:50:38,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:38" (1/1) ... [2020-07-21 12:50:38,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:38" (1/1) ... [2020-07-21 12:50:38,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:38" (1/1) ... [2020-07-21 12:50:38,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:38" (1/1) ... [2020-07-21 12:50:38,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:38" (1/1) ... [2020-07-21 12:50:38,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:38" (1/1) ... [2020-07-21 12:50:38,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:50:38,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:50:38,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:50:38,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:50:38,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:50:38,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:50:38,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:50:38,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 12:50:38,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 12:50:38,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 12:50:38,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 12:50:38,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 12:50:38,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 12:50:38,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 12:50:38,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 12:50:38,230 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 12:50:38,230 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 12:50:38,230 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 12:50:38,230 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 12:50:38,231 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-07-21 12:50:38,231 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 12:50:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 12:50:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 12:50:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 12:50:38,232 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 12:50:38,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 12:50:38,233 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-21 12:50:38,233 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-21 12:50:38,233 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 12:50:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 12:50:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 12:50:38,236 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 12:50:38,236 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 12:50:38,236 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 12:50:38,236 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 12:50:38,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-21 12:50:38,237 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 12:50:38,237 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 12:50:38,237 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 12:50:38,237 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 12:50:38,237 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 12:50:38,237 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 12:50:38,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 12:50:38,238 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 12:50:38,238 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:50:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:50:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 12:50:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 12:50:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 12:50:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 12:50:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 12:50:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 12:50:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 12:50:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 12:50:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 12:50:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 12:50:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 12:50:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 12:50:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 12:50:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 12:50:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 12:50:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 12:50:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 12:50:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 12:50:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 12:50:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 12:50:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 12:50:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 12:50:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-21 12:50:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-21 12:50:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 12:50:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 12:50:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 12:50:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 12:50:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 12:50:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 12:50:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 12:50:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 12:50:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 12:50:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 12:50:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 12:50:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-21 12:50:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 12:50:38,243 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 12:50:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 12:50:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-07-21 12:50:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 12:50:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 12:50:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 12:50:38,244 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 12:50:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 12:50:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 12:50:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 12:50:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 12:50:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 12:50:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:50:38,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:50:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 12:50:38,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:50:39,322 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:50:39,322 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 12:50:39,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:50:39 BoogieIcfgContainer [2020-07-21 12:50:39,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:50:39,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:50:39,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:50:39,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:50:39,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:50:37" (1/3) ... [2020-07-21 12:50:39,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fabfb68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:50:39, skipping insertion in model container [2020-07-21 12:50:39,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:50:38" (2/3) ... [2020-07-21 12:50:39,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fabfb68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:50:39, skipping insertion in model container [2020-07-21 12:50:39,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:50:39" (3/3) ... [2020-07-21 12:50:39,336 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2020-07-21 12:50:39,346 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:50:39,355 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:50:39,369 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:50:39,395 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:50:39,395 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:50:39,395 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:50:39,395 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:50:39,396 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:50:39,396 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:50:39,396 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:50:39,396 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:50:39,420 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-07-21 12:50:39,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 12:50:39,431 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:39,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:39,432 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:39,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:39,440 INFO L82 PathProgramCache]: Analyzing trace with hash -325582978, now seen corresponding path program 1 times [2020-07-21 12:50:39,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:39,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419491451] [2020-07-21 12:50:39,452 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:39,841 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:39,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:39,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 12:50:39,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:39,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:39,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:39,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419491451] [2020-07-21 12:50:39,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:39,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 12:50:39,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128033037] [2020-07-21 12:50:39,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 12:50:39,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:39,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 12:50:39,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:50:39,914 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 2 states. [2020-07-21 12:50:39,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:39,959 INFO L93 Difference]: Finished difference Result 260 states and 319 transitions. [2020-07-21 12:50:39,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 12:50:39,961 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 12:50:39,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:39,978 INFO L225 Difference]: With dead ends: 260 [2020-07-21 12:50:39,978 INFO L226 Difference]: Without dead ends: 130 [2020-07-21 12:50:39,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 12:50:40,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-07-21 12:50:40,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-07-21 12:50:40,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-07-21 12:50:40,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-07-21 12:50:40,050 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 46 [2020-07-21 12:50:40,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:40,051 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-07-21 12:50:40,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 12:50:40,051 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-07-21 12:50:40,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 12:50:40,055 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:40,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:40,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:40,269 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:40,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:40,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1889235753, now seen corresponding path program 1 times [2020-07-21 12:50:40,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:40,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730207314] [2020-07-21 12:50:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:40,670 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:40,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:40,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 12:50:40,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:40,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:40,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:40,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730207314] [2020-07-21 12:50:40,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:40,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:40,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527563223] [2020-07-21 12:50:40,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:40,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:40,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:40,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:40,728 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 3 states. [2020-07-21 12:50:40,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:40,750 INFO L93 Difference]: Finished difference Result 196 states and 227 transitions. [2020-07-21 12:50:40,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:40,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 12:50:40,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:40,754 INFO L225 Difference]: With dead ends: 196 [2020-07-21 12:50:40,754 INFO L226 Difference]: Without dead ends: 121 [2020-07-21 12:50:40,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:40,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-07-21 12:50:40,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2020-07-21 12:50:40,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-07-21 12:50:40,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2020-07-21 12:50:40,770 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 47 [2020-07-21 12:50:40,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:40,771 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2020-07-21 12:50:40,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:40,771 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2020-07-21 12:50:40,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-21 12:50:40,773 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:40,774 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] [2020-07-21 12:50:40,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:40,987 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:40,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:40,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1400660330, now seen corresponding path program 1 times [2020-07-21 12:50:40,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:40,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639847080] [2020-07-21 12:50:40,990 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:41,290 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:41,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:41,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 12:50:41,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:41,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:41,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639847080] [2020-07-21 12:50:41,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:41,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:41,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745347843] [2020-07-21 12:50:41,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:41,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:41,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:41,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:41,350 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 3 states. [2020-07-21 12:50:41,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:41,400 INFO L93 Difference]: Finished difference Result 311 states and 368 transitions. [2020-07-21 12:50:41,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:41,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-21 12:50:41,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:41,408 INFO L225 Difference]: With dead ends: 311 [2020-07-21 12:50:41,408 INFO L226 Difference]: Without dead ends: 214 [2020-07-21 12:50:41,413 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 [2020-07-21 12:50:41,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-07-21 12:50:41,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 202. [2020-07-21 12:50:41,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-07-21 12:50:41,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 237 transitions. [2020-07-21 12:50:41,471 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 237 transitions. Word has length 52 [2020-07-21 12:50:41,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:41,471 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 237 transitions. [2020-07-21 12:50:41,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:41,472 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 237 transitions. [2020-07-21 12:50:41,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 12:50:41,476 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:41,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:41,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:41,692 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:41,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:41,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1567525845, now seen corresponding path program 1 times [2020-07-21 12:50:41,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:41,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062815477] [2020-07-21 12:50:41,695 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:41,965 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:41,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:41,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 12:50:41,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:42,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:42,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:42,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062815477] [2020-07-21 12:50:42,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:42,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:42,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676074989] [2020-07-21 12:50:42,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:42,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:42,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:42,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:42,013 INFO L87 Difference]: Start difference. First operand 202 states and 237 transitions. Second operand 6 states. [2020-07-21 12:50:42,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:42,253 INFO L93 Difference]: Finished difference Result 547 states and 659 transitions. [2020-07-21 12:50:42,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:50:42,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-21 12:50:42,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:42,258 INFO L225 Difference]: With dead ends: 547 [2020-07-21 12:50:42,258 INFO L226 Difference]: Without dead ends: 369 [2020-07-21 12:50:42,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:50:42,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-07-21 12:50:42,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 365. [2020-07-21 12:50:42,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-07-21 12:50:42,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 432 transitions. [2020-07-21 12:50:42,299 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 432 transitions. Word has length 57 [2020-07-21 12:50:42,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:42,300 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 432 transitions. [2020-07-21 12:50:42,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:42,300 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 432 transitions. [2020-07-21 12:50:42,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-21 12:50:42,303 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:42,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:42,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:42,517 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:42,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:42,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1743298223, now seen corresponding path program 1 times [2020-07-21 12:50:42,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:42,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209519312] [2020-07-21 12:50:42,519 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:42,787 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:42,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:42,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 12:50:42,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:42,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:42,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209519312] [2020-07-21 12:50:42,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:42,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:42,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861203122] [2020-07-21 12:50:42,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:42,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:42,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:42,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:42,826 INFO L87 Difference]: Start difference. First operand 365 states and 432 transitions. Second operand 6 states. [2020-07-21 12:50:43,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:43,059 INFO L93 Difference]: Finished difference Result 902 states and 1104 transitions. [2020-07-21 12:50:43,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 12:50:43,060 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-07-21 12:50:43,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:43,065 INFO L225 Difference]: With dead ends: 902 [2020-07-21 12:50:43,066 INFO L226 Difference]: Without dead ends: 561 [2020-07-21 12:50:43,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:50:43,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2020-07-21 12:50:43,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 553. [2020-07-21 12:50:43,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-07-21 12:50:43,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 662 transitions. [2020-07-21 12:50:43,102 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 662 transitions. Word has length 61 [2020-07-21 12:50:43,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:43,102 INFO L479 AbstractCegarLoop]: Abstraction has 553 states and 662 transitions. [2020-07-21 12:50:43,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:43,103 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 662 transitions. [2020-07-21 12:50:43,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-07-21 12:50:43,105 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:43,105 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:43,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:43,320 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:43,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:43,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1614775342, now seen corresponding path program 1 times [2020-07-21 12:50:43,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:43,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97056344] [2020-07-21 12:50:43,322 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:43,560 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:43,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:43,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 12:50:43,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:43,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 12:50:43,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:43,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97056344] [2020-07-21 12:50:43,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:43,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:43,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839461547] [2020-07-21 12:50:43,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:43,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:43,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:43,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:43,604 INFO L87 Difference]: Start difference. First operand 553 states and 662 transitions. Second operand 3 states. [2020-07-21 12:50:43,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:43,663 INFO L93 Difference]: Finished difference Result 1595 states and 2030 transitions. [2020-07-21 12:50:43,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:43,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-07-21 12:50:43,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:43,673 INFO L225 Difference]: With dead ends: 1595 [2020-07-21 12:50:43,673 INFO L226 Difference]: Without dead ends: 1066 [2020-07-21 12:50:43,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:43,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-07-21 12:50:43,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1063. [2020-07-21 12:50:43,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2020-07-21 12:50:43,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1322 transitions. [2020-07-21 12:50:43,821 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1322 transitions. Word has length 94 [2020-07-21 12:50:43,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:43,822 INFO L479 AbstractCegarLoop]: Abstraction has 1063 states and 1322 transitions. [2020-07-21 12:50:43,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:43,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1322 transitions. [2020-07-21 12:50:43,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-07-21 12:50:43,826 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:43,827 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:44,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:44,042 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:44,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:44,043 INFO L82 PathProgramCache]: Analyzing trace with hash 709252497, now seen corresponding path program 1 times [2020-07-21 12:50:44,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:44,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778867398] [2020-07-21 12:50:44,044 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:44,355 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:44,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:44,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 12:50:44,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:44,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:50:44,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:44,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778867398] [2020-07-21 12:50:44,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:44,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 12:50:44,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010663276] [2020-07-21 12:50:44,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 12:50:44,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:44,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 12:50:44,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:50:44,443 INFO L87 Difference]: Start difference. First operand 1063 states and 1322 transitions. Second operand 8 states. [2020-07-21 12:50:44,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:44,778 INFO L93 Difference]: Finished difference Result 2078 states and 2610 transitions. [2020-07-21 12:50:44,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 12:50:44,778 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-07-21 12:50:44,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:44,785 INFO L225 Difference]: With dead ends: 2078 [2020-07-21 12:50:44,786 INFO L226 Difference]: Without dead ends: 1039 [2020-07-21 12:50:44,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:50:44,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-07-21 12:50:44,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1039. [2020-07-21 12:50:44,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-07-21 12:50:44,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1264 transitions. [2020-07-21 12:50:44,848 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1264 transitions. Word has length 94 [2020-07-21 12:50:44,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:44,848 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1264 transitions. [2020-07-21 12:50:44,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 12:50:44,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1264 transitions. [2020-07-21 12:50:44,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-07-21 12:50:44,853 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:44,853 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:45,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:45,067 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:45,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:45,067 INFO L82 PathProgramCache]: Analyzing trace with hash -802870521, now seen corresponding path program 1 times [2020-07-21 12:50:45,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:45,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812886549] [2020-07-21 12:50:45,068 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:45,265 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 12:50:45,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:45,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 12:50:45,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-07-21 12:50:45,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:45,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812886549] [2020-07-21 12:50:45,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:45,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 12:50:45,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604508679] [2020-07-21 12:50:45,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 12:50:45,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:45,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 12:50:45,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:45,296 INFO L87 Difference]: Start difference. First operand 1039 states and 1264 transitions. Second operand 3 states. [2020-07-21 12:50:45,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:45,402 INFO L93 Difference]: Finished difference Result 1742 states and 2122 transitions. [2020-07-21 12:50:45,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 12:50:45,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2020-07-21 12:50:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:45,408 INFO L225 Difference]: With dead ends: 1742 [2020-07-21 12:50:45,408 INFO L226 Difference]: Without dead ends: 727 [2020-07-21 12:50:45,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 12:50:45,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-07-21 12:50:45,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 707. [2020-07-21 12:50:45,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2020-07-21 12:50:45,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 841 transitions. [2020-07-21 12:50:45,452 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 841 transitions. Word has length 131 [2020-07-21 12:50:45,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:45,452 INFO L479 AbstractCegarLoop]: Abstraction has 707 states and 841 transitions. [2020-07-21 12:50:45,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 12:50:45,453 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 841 transitions. [2020-07-21 12:50:45,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-07-21 12:50:45,456 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:45,456 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:45,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:45,671 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:45,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:45,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1634353321, now seen corresponding path program 1 times [2020-07-21 12:50:45,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:45,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754930894] [2020-07-21 12:50:45,673 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:45,938 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:45,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:45,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 848 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 12:50:45,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:45,980 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 12:50:45,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:45,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754930894] [2020-07-21 12:50:45,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:45,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 12:50:45,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131602992] [2020-07-21 12:50:45,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 12:50:45,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:45,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 12:50:45,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:50:45,984 INFO L87 Difference]: Start difference. First operand 707 states and 841 transitions. Second operand 6 states. [2020-07-21 12:50:46,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:46,082 INFO L93 Difference]: Finished difference Result 1418 states and 1736 transitions. [2020-07-21 12:50:46,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 12:50:46,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2020-07-21 12:50:46,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:46,091 INFO L225 Difference]: With dead ends: 1418 [2020-07-21 12:50:46,091 INFO L226 Difference]: Without dead ends: 735 [2020-07-21 12:50:46,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 12:50:46,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2020-07-21 12:50:46,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 727. [2020-07-21 12:50:46,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-07-21 12:50:46,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 863 transitions. [2020-07-21 12:50:46,132 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 863 transitions. Word has length 130 [2020-07-21 12:50:46,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:46,132 INFO L479 AbstractCegarLoop]: Abstraction has 727 states and 863 transitions. [2020-07-21 12:50:46,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 12:50:46,133 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 863 transitions. [2020-07-21 12:50:46,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-07-21 12:50:46,138 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:46,138 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:46,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:46,350 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:46,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:46,351 INFO L82 PathProgramCache]: Analyzing trace with hash -309497127, now seen corresponding path program 1 times [2020-07-21 12:50:46,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:46,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381457029] [2020-07-21 12:50:46,352 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:46,650 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:46,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:50:46,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 12:50:46,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:50:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 12:50:46,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:50:46,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381457029] [2020-07-21 12:50:46,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:50:46,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 12:50:46,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098947778] [2020-07-21 12:50:46,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 12:50:46,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:50:46,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 12:50:46,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:50:46,698 INFO L87 Difference]: Start difference. First operand 727 states and 863 transitions. Second operand 5 states. [2020-07-21 12:50:46,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:50:46,754 INFO L93 Difference]: Finished difference Result 1390 states and 1678 transitions. [2020-07-21 12:50:46,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 12:50:46,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2020-07-21 12:50:46,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:50:46,760 INFO L225 Difference]: With dead ends: 1390 [2020-07-21 12:50:46,761 INFO L226 Difference]: Without dead ends: 687 [2020-07-21 12:50:46,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:50:46,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2020-07-21 12:50:46,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2020-07-21 12:50:46,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2020-07-21 12:50:46,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 809 transitions. [2020-07-21 12:50:46,800 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 809 transitions. Word has length 130 [2020-07-21 12:50:46,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:50:46,801 INFO L479 AbstractCegarLoop]: Abstraction has 687 states and 809 transitions. [2020-07-21 12:50:46,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 12:50:46,801 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 809 transitions. [2020-07-21 12:50:46,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-07-21 12:50:46,804 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:50:46,805 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:50:47,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:47,018 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:50:47,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:50:47,019 INFO L82 PathProgramCache]: Analyzing trace with hash 555633972, now seen corresponding path program 1 times [2020-07-21 12:50:47,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:50:47,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826884698] [2020-07-21 12:50:47,020 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:47,403 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:50:47,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 12:50:47,403 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:50:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 12:50:47,507 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 12:50:47,923 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 12:50:47,923 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 12:50:48,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:50:48,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:50:48 BoogieIcfgContainer [2020-07-21 12:50:48,401 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 12:50:48,405 INFO L168 Benchmark]: Toolchain (without parser) took 11069.72 ms. Allocated memory was 138.9 MB in the beginning and 346.0 MB in the end (delta: 207.1 MB). Free memory was 101.4 MB in the beginning and 230.1 MB in the end (delta: -128.7 MB). Peak memory consumption was 78.4 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:48,405 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 12:50:48,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.52 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 101.0 MB in the beginning and 173.2 MB in the end (delta: -72.2 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:48,410 INFO L168 Benchmark]: Boogie Preprocessor took 91.95 ms. Allocated memory is still 204.5 MB. Free memory was 173.2 MB in the beginning and 167.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:48,414 INFO L168 Benchmark]: RCFGBuilder took 1194.27 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 167.6 MB in the beginning and 193.5 MB in the end (delta: -25.8 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:48,415 INFO L168 Benchmark]: TraceAbstraction took 9072.63 ms. Allocated memory was 234.9 MB in the beginning and 346.0 MB in the end (delta: 111.1 MB). Free memory was 193.5 MB in the beginning and 230.1 MB in the end (delta: -36.7 MB). Peak memory consumption was 74.5 MB. Max. memory is 7.1 GB. [2020-07-21 12:50:48,424 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 704.52 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 101.0 MB in the beginning and 173.2 MB in the end (delta: -72.2 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.95 ms. Allocated memory is still 204.5 MB. Free memory was 173.2 MB in the beginning and 167.6 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1194.27 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 167.6 MB in the beginning and 193.5 MB in the end (delta: -25.8 MB). Peak memory consumption was 81.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9072.63 ms. Allocated memory was 234.9 MB in the beginning and 346.0 MB in the end (delta: 111.1 MB). Free memory was 193.5 MB in the beginning and 230.1 MB in the end (delta: -36.7 MB). Peak memory consumption was 74.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L498] int pumpRunning = 0; [L499] int systemActive = 1; [L693] int waterLevel = 1; [L694] int methaneLevelCritical = 0; [L851] int cleanupTimeShifts = 4; VAL [\old(cleanupTimeShifts)=66, \old(head)=27, \old(head)=96, \old(methaneLevelCritical)=56, \old(pumpRunning)=43, \old(systemActive)=28, \old(waterLevel)=97, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L924] int retValue_acc ; [L925] 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] [L929] 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] [L930] 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] [L931] 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] [L842] int retValue_acc ; [L845] retValue_acc = 1 [L846] 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] [L931] 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] [L931] tmp = valid_product() [L933] 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] [L935] 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] [L936] 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] [L918] 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] [L422] int splverifierCounter ; [L423] int tmp ; [L424] int tmp___0 ; [L425] int tmp___1 ; [L426] int tmp___2 ; [L429] 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] [L431] 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] [L433] 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] [L439] tmp = __VERIFIER_nondet_int() [L441] 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] [L443] 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] [L711] COND TRUE waterLevel < 2 [L712] 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] [L443] 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] [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND FALSE !(\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=0, waterLevel=2] [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___2)) [L467] tmp___1 = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp___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, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L478] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L506] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L513] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L515] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L535] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L538] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L540] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L650] int retValue_acc ; [L651] int tmp ; [L652] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L656] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L773] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L776] COND FALSE !(waterLevel < 2) [L780] retValue_acc = 0 [L781] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L656] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L656] tmp = isHighWaterSensorDry() [L658] COND FALSE !(\read(tmp)) [L661] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L663] retValue_acc = tmp___0 [L664] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L540] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L540] tmp = isHighWaterLevel() [L542] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L544] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L569] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L573] CALL, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L594] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L598] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L598] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L598] retValue_acc = isMethaneLevelCritical() [L600] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L573] RET, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L573] tmp = isMethaneAlarm() [L575] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L579] CALL activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L563] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L579] RET activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L544] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L515] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L521] 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=0, pumpRunning=1, systemActive=1, waterLevel=2] [L788] int tmp ; [L789] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L793] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=2] [L793] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L793] tmp = isMethaneLevelCritical() [L795] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L521] RET __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L478] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L431] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L433] 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=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L439] tmp = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L449] tmp___0 = __VERIFIER_nondet_int() [L451] 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=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L453] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L723] COND FALSE !(\read(methaneLevelCritical)) [L726] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L453] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___2)) [L467] tmp___1 = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___1=0, tmp___2=0, waterLevel=2] [L478] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L506] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L508] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L699] COND TRUE waterLevel > 0 [L700] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L508] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L513] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L515] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L535] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L538] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L553] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L515] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L521] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L788] int tmp ; [L789] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L793] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L793] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L793] tmp = isMethaneLevelCritical() [L795] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L797] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L605] int retValue_acc ; [L608] retValue_acc = pumpRunning [L609] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L797] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L797] tmp___0 = isPumpRunning() [L799] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L801] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L44] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.7s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1611 SDtfs, 524 SDslu, 2923 SDs, 0 SdLazy, 409 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 837 GetRequests, 805 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1063occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 55 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 976 NumberOfCodeBlocks, 911 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 832 ConstructedInterpolants, 0 QuantifiedInterpolants, 114452 SizeOfPredicates, 23 NumberOfNonLiveVariables, 7269 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 94/94 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...