/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 15:39:44,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 15:39:44,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 15:39:44,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 15:39:44,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 15:39:44,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 15:39:44,104 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 15:39:44,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 15:39:44,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 15:39:44,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 15:39:44,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 15:39:44,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 15:39:44,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 15:39:44,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 15:39:44,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 15:39:44,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 15:39:44,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 15:39:44,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 15:39:44,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 15:39:44,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 15:39:44,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 15:39:44,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 15:39:44,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 15:39:44,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 15:39:44,148 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 15:39:44,148 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 15:39:44,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 15:39:44,151 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 15:39:44,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 15:39:44,152 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 15:39:44,153 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 15:39:44,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 15:39:44,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 15:39:44,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 15:39:44,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 15:39:44,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 15:39:44,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 15:39:44,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 15:39:44,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 15:39:44,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 15:39:44,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 15:39:44,164 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 15:39:44,195 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 15:39:44,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 15:39:44,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 15:39:44,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 15:39:44,197 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 15:39:44,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 15:39:44,198 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 15:39:44,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 15:39:44,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 15:39:44,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 15:39:44,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 15:39:44,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 15:39:44,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 15:39:44,201 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 15:39:44,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 15:39:44,201 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 15:39:44,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 15:39:44,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 15:39:44,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 15:39:44,203 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 15:39:44,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 15:39:44,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:39:44,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 15:39:44,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 15:39:44,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 15:39:44,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 15:39:44,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:44,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 15:39:44,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 15:39:44,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 15:39:44,472 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 15:39:44,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 15:39:44,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 15:39:44,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 15:39:44,492 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 15:39:44,493 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-07-21 15:39:44,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc1db5807/dac12c93a4734bf18ae5cf315be391ee/FLAGa5049616a [2020-07-21 15:39:45,120 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 15:39:45,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product43.cil.c [2020-07-21 15:39:45,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc1db5807/dac12c93a4734bf18ae5cf315be391ee/FLAGa5049616a [2020-07-21 15:39:45,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc1db5807/dac12c93a4734bf18ae5cf315be391ee [2020-07-21 15:39:45,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 15:39:45,426 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 15:39:45,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 15:39:45,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 15:39:45,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 15:39:45,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:39:45" (1/1) ... [2020-07-21 15:39:45,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769d466a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:45, skipping insertion in model container [2020-07-21 15:39:45,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:39:45" (1/1) ... [2020-07-21 15:39:45,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 15:39:45,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 15:39:45,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:39:45,908 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 15:39:46,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:39:46,040 INFO L208 MainTranslator]: Completed translation [2020-07-21 15:39:46,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:46 WrapperNode [2020-07-21 15:39:46,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 15:39:46,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 15:39:46,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 15:39:46,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 15:39:46,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:46" (1/1) ... [2020-07-21 15:39:46,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:46" (1/1) ... [2020-07-21 15:39:46,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:46" (1/1) ... [2020-07-21 15:39:46,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:46" (1/1) ... [2020-07-21 15:39:46,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:46" (1/1) ... [2020-07-21 15:39:46,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:46" (1/1) ... [2020-07-21 15:39:46,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:46" (1/1) ... [2020-07-21 15:39:46,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 15:39:46,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 15:39:46,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 15:39:46,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 15:39:46,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:39:46,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 15:39:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 15:39:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 15:39:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 15:39:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 15:39:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 15:39:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 15:39:46,197 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 15:39:46,197 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 15:39:46,197 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 15:39:46,197 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 15:39:46,197 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 15:39:46,197 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 15:39:46,198 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-07-21 15:39:46,198 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 15:39:46,198 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 15:39:46,198 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 15:39:46,198 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 15:39:46,198 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 15:39:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 15:39:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-21 15:39:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 15:39:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 15:39:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-21 15:39:46,199 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 15:39:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 15:39:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 15:39:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 15:39:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 15:39:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 15:39:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 15:39:46,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 15:39:46,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 15:39:46,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 15:39:46,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 15:39:46,201 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 15:39:46,201 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 15:39:46,201 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 15:39:46,202 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 15:39:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 15:39:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 15:39:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 15:39:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 15:39:46,202 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 15:39:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 15:39:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 15:39:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 15:39:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 15:39:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 15:39:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 15:39:46,203 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 15:39:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 15:39:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 15:39:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 15:39:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 15:39:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-21 15:39:46,204 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-21 15:39:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 15:39:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 15:39:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 15:39:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-07-21 15:39:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 15:39:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 15:39:46,206 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 15:39:46,206 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 15:39:46,206 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 15:39:46,206 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 15:39:46,206 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 15:39:46,206 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 15:39:46,206 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 15:39:46,207 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 15:39:46,207 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 15:39:46,207 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 15:39:46,207 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 15:39:46,207 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 15:39:46,207 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 15:39:46,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 15:39:46,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 15:39:46,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 15:39:46,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 15:39:46,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 15:39:46,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 15:39:46,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 15:39:46,209 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 15:39:46,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 15:39:46,209 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 15:39:46,209 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 15:39:46,209 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 15:39:46,209 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 15:39:46,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 15:39:46,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 15:39:46,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 15:39:47,205 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 15:39:47,206 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 15:39:47,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:39:47 BoogieIcfgContainer [2020-07-21 15:39:47,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 15:39:47,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 15:39:47,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 15:39:47,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 15:39:47,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:39:45" (1/3) ... [2020-07-21 15:39:47,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@347be98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:39:47, skipping insertion in model container [2020-07-21 15:39:47,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:46" (2/3) ... [2020-07-21 15:39:47,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@347be98f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:39:47, skipping insertion in model container [2020-07-21 15:39:47,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:39:47" (3/3) ... [2020-07-21 15:39:47,221 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product43.cil.c [2020-07-21 15:39:47,232 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 15:39:47,240 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 15:39:47,255 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 15:39:47,281 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 15:39:47,281 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 15:39:47,281 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 15:39:47,281 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 15:39:47,282 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 15:39:47,282 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 15:39:47,282 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 15:39:47,282 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 15:39:47,305 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-07-21 15:39:47,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 15:39:47,315 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:47,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:47,317 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:47,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:47,323 INFO L82 PathProgramCache]: Analyzing trace with hash 2058113087, now seen corresponding path program 1 times [2020-07-21 15:39:47,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:47,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315560862] [2020-07-21 15:39:47,333 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:47,714 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:47,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:47,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 15:39:47,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:47,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:47,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315560862] [2020-07-21 15:39:47,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:47,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 15:39:47,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073421036] [2020-07-21 15:39:47,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 15:39:47,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:47,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 15:39:47,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:39:47,797 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 2 states. [2020-07-21 15:39:47,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:47,845 INFO L93 Difference]: Finished difference Result 252 states and 311 transitions. [2020-07-21 15:39:47,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 15:39:47,847 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 15:39:47,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:47,864 INFO L225 Difference]: With dead ends: 252 [2020-07-21 15:39:47,864 INFO L226 Difference]: Without dead ends: 126 [2020-07-21 15:39:47,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:39:47,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-07-21 15:39:47,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-07-21 15:39:47,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-21 15:39:47,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2020-07-21 15:39:47,935 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 46 [2020-07-21 15:39:47,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:47,936 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2020-07-21 15:39:47,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 15:39:47,936 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2020-07-21 15:39:47,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 15:39:47,940 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:47,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:48,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:48,157 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:48,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:48,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1232914971, now seen corresponding path program 1 times [2020-07-21 15:39:48,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:48,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033189213] [2020-07-21 15:39:48,158 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:48,507 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:48,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:48,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 15:39:48,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:48,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:48,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:48,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033189213] [2020-07-21 15:39:48,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:48,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:39:48,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405411086] [2020-07-21 15:39:48,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:39:48,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:48,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:39:48,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:48,571 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand 3 states. [2020-07-21 15:39:48,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:48,611 INFO L93 Difference]: Finished difference Result 192 states and 223 transitions. [2020-07-21 15:39:48,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:39:48,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 15:39:48,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:48,618 INFO L225 Difference]: With dead ends: 192 [2020-07-21 15:39:48,620 INFO L226 Difference]: Without dead ends: 117 [2020-07-21 15:39:48,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:48,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-07-21 15:39:48,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-07-21 15:39:48,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-07-21 15:39:48,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-07-21 15:39:48,646 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 47 [2020-07-21 15:39:48,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:48,646 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-07-21 15:39:48,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:39:48,647 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-07-21 15:39:48,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-21 15:39:48,653 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:48,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:48,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:48,870 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:48,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:48,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1264843506, now seen corresponding path program 1 times [2020-07-21 15:39:48,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:48,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942995470] [2020-07-21 15:39:48,871 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:49,157 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:49,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:49,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 15:39:49,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:49,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:49,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942995470] [2020-07-21 15:39:49,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:49,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:39:49,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688777981] [2020-07-21 15:39:49,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:39:49,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:49,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:39:49,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:49,191 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 3 states. [2020-07-21 15:39:49,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:49,221 INFO L93 Difference]: Finished difference Result 301 states and 357 transitions. [2020-07-21 15:39:49,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:39:49,222 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-21 15:39:49,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:49,226 INFO L225 Difference]: With dead ends: 301 [2020-07-21 15:39:49,226 INFO L226 Difference]: Without dead ends: 208 [2020-07-21 15:39:49,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:49,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-07-21 15:39:49,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 198. [2020-07-21 15:39:49,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-07-21 15:39:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 233 transitions. [2020-07-21 15:39:49,258 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 233 transitions. Word has length 51 [2020-07-21 15:39:49,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:49,258 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 233 transitions. [2020-07-21 15:39:49,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:39:49,259 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 233 transitions. [2020-07-21 15:39:49,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 15:39:49,261 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:49,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:49,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:49,477 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:49,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:49,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1557328557, now seen corresponding path program 1 times [2020-07-21 15:39:49,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:49,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061422041] [2020-07-21 15:39:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:49,793 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:49,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:49,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 15:39:49,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:49,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:49,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:49,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061422041] [2020-07-21 15:39:49,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:49,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:49,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154266874] [2020-07-21 15:39:49,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:49,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:49,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:49,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:49,847 INFO L87 Difference]: Start difference. First operand 198 states and 233 transitions. Second operand 6 states. [2020-07-21 15:39:50,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:50,054 INFO L93 Difference]: Finished difference Result 535 states and 647 transitions. [2020-07-21 15:39:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 15:39:50,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-21 15:39:50,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:50,059 INFO L225 Difference]: With dead ends: 535 [2020-07-21 15:39:50,059 INFO L226 Difference]: Without dead ends: 361 [2020-07-21 15:39:50,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 15:39:50,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-07-21 15:39:50,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 357. [2020-07-21 15:39:50,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-07-21 15:39:50,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 424 transitions. [2020-07-21 15:39:50,094 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 424 transitions. Word has length 57 [2020-07-21 15:39:50,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:50,094 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 424 transitions. [2020-07-21 15:39:50,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:50,094 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 424 transitions. [2020-07-21 15:39:50,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-21 15:39:50,096 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:50,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:50,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:50,312 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:50,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:50,312 INFO L82 PathProgramCache]: Analyzing trace with hash 2005186865, now seen corresponding path program 1 times [2020-07-21 15:39:50,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:50,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586302404] [2020-07-21 15:39:50,313 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:50,625 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:50,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:50,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:39:50,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:50,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:50,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586302404] [2020-07-21 15:39:50,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:50,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:50,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932077617] [2020-07-21 15:39:50,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:50,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:50,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:50,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:50,693 INFO L87 Difference]: Start difference. First operand 357 states and 424 transitions. Second operand 6 states. [2020-07-21 15:39:50,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:50,907 INFO L93 Difference]: Finished difference Result 878 states and 1080 transitions. [2020-07-21 15:39:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 15:39:50,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-07-21 15:39:50,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:50,912 INFO L225 Difference]: With dead ends: 878 [2020-07-21 15:39:50,913 INFO L226 Difference]: Without dead ends: 545 [2020-07-21 15:39:50,916 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 15:39:50,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-07-21 15:39:50,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 537. [2020-07-21 15:39:50,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-07-21 15:39:50,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 646 transitions. [2020-07-21 15:39:50,956 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 646 transitions. Word has length 61 [2020-07-21 15:39:50,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:50,957 INFO L479 AbstractCegarLoop]: Abstraction has 537 states and 646 transitions. [2020-07-21 15:39:50,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:50,957 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 646 transitions. [2020-07-21 15:39:50,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-07-21 15:39:50,959 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:50,960 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] [2020-07-21 15:39:51,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:51,174 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:51,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:51,175 INFO L82 PathProgramCache]: Analyzing trace with hash 90269024, now seen corresponding path program 1 times [2020-07-21 15:39:51,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:51,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283061114] [2020-07-21 15:39:51,175 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:51,358 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:39:51,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:51,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 15:39:51,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:51,391 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 15:39:51,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:51,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283061114] [2020-07-21 15:39:51,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:51,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 15:39:51,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914992995] [2020-07-21 15:39:51,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 15:39:51,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:51,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 15:39:51,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:39:51,394 INFO L87 Difference]: Start difference. First operand 537 states and 646 transitions. Second operand 5 states. [2020-07-21 15:39:51,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:51,428 INFO L93 Difference]: Finished difference Result 1078 states and 1336 transitions. [2020-07-21 15:39:51,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 15:39:51,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-07-21 15:39:51,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:51,433 INFO L225 Difference]: With dead ends: 1078 [2020-07-21 15:39:51,433 INFO L226 Difference]: Without dead ends: 565 [2020-07-21 15:39:51,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:39:51,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-07-21 15:39:51,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 553. [2020-07-21 15:39:51,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-07-21 15:39:51,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 662 transitions. [2020-07-21 15:39:51,465 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 662 transitions. Word has length 93 [2020-07-21 15:39:51,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:51,465 INFO L479 AbstractCegarLoop]: Abstraction has 553 states and 662 transitions. [2020-07-21 15:39:51,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 15:39:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 662 transitions. [2020-07-21 15:39:51,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-07-21 15:39:51,468 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:51,468 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] [2020-07-21 15:39:51,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:51,682 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:51,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:51,683 INFO L82 PathProgramCache]: Analyzing trace with hash -807124254, now seen corresponding path program 1 times [2020-07-21 15:39:51,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:51,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991014308] [2020-07-21 15:39:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:51,955 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:51,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:51,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 15:39:51,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:52,036 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 15:39:52,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:52,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991014308] [2020-07-21 15:39:52,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:52,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 15:39:52,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017707110] [2020-07-21 15:39:52,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 15:39:52,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:52,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 15:39:52,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 15:39:52,039 INFO L87 Difference]: Start difference. First operand 553 states and 662 transitions. Second operand 8 states. [2020-07-21 15:39:52,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:52,658 INFO L93 Difference]: Finished difference Result 1070 states and 1294 transitions. [2020-07-21 15:39:52,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 15:39:52,659 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-07-21 15:39:52,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:52,664 INFO L225 Difference]: With dead ends: 1070 [2020-07-21 15:39:52,664 INFO L226 Difference]: Without dead ends: 541 [2020-07-21 15:39:52,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 85 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 15:39:52,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-07-21 15:39:52,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2020-07-21 15:39:52,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 541 states. [2020-07-21 15:39:52,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 636 transitions. [2020-07-21 15:39:52,695 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 636 transitions. Word has length 93 [2020-07-21 15:39:52,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:52,696 INFO L479 AbstractCegarLoop]: Abstraction has 541 states and 636 transitions. [2020-07-21 15:39:52,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 15:39:52,696 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 636 transitions. [2020-07-21 15:39:52,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-07-21 15:39:52,699 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:52,699 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] [2020-07-21 15:39:52,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:52,913 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:52,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:52,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1465409451, now seen corresponding path program 1 times [2020-07-21 15:39:52,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:52,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853413468] [2020-07-21 15:39:52,915 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:53,136 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:53,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:53,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 15:39:53,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-07-21 15:39:53,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:53,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853413468] [2020-07-21 15:39:53,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:53,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:39:53,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628197107] [2020-07-21 15:39:53,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:39:53,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:53,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:39:53,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:53,194 INFO L87 Difference]: Start difference. First operand 541 states and 636 transitions. Second operand 3 states. [2020-07-21 15:39:53,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:53,280 INFO L93 Difference]: Finished difference Result 642 states and 758 transitions. [2020-07-21 15:39:53,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:39:53,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2020-07-21 15:39:53,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:53,282 INFO L225 Difference]: With dead ends: 642 [2020-07-21 15:39:53,283 INFO L226 Difference]: Without dead ends: 273 [2020-07-21 15:39:53,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:53,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-07-21 15:39:53,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2020-07-21 15:39:53,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-07-21 15:39:53,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 312 transitions. [2020-07-21 15:39:53,297 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 312 transitions. Word has length 126 [2020-07-21 15:39:53,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:53,297 INFO L479 AbstractCegarLoop]: Abstraction has 273 states and 312 transitions. [2020-07-21 15:39:53,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:39:53,297 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 312 transitions. [2020-07-21 15:39:53,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-21 15:39:53,300 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:53,300 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] [2020-07-21 15:39:53,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:53,515 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:53,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:53,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1101121451, now seen corresponding path program 1 times [2020-07-21 15:39:53,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:53,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446523707] [2020-07-21 15:39:53,516 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:53,693 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:39:53,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:53,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 15:39:53,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:53,762 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 15:39:53,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:53,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446523707] [2020-07-21 15:39:53,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:53,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:53,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312195206] [2020-07-21 15:39:53,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:53,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:53,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:53,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:53,764 INFO L87 Difference]: Start difference. First operand 273 states and 312 transitions. Second operand 6 states. [2020-07-21 15:39:54,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:54,495 INFO L93 Difference]: Finished difference Result 889 states and 1141 transitions. [2020-07-21 15:39:54,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 15:39:54,496 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2020-07-21 15:39:54,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:54,500 INFO L225 Difference]: With dead ends: 889 [2020-07-21 15:39:54,500 INFO L226 Difference]: Without dead ends: 640 [2020-07-21 15:39:54,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 15:39:54,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2020-07-21 15:39:54,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 589. [2020-07-21 15:39:54,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2020-07-21 15:39:54,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 711 transitions. [2020-07-21 15:39:54,538 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 711 transitions. Word has length 128 [2020-07-21 15:39:54,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:54,539 INFO L479 AbstractCegarLoop]: Abstraction has 589 states and 711 transitions. [2020-07-21 15:39:54,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:54,539 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 711 transitions. [2020-07-21 15:39:54,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-07-21 15:39:54,542 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:54,542 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 15:39:54,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:54,758 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:54,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:54,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1154520274, now seen corresponding path program 1 times [2020-07-21 15:39:54,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:54,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837861439] [2020-07-21 15:39:54,760 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:54,937 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:39:54,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:54,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 15:39:54,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:55,022 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 15:39:55,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:55,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837861439] [2020-07-21 15:39:55,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:55,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 15:39:55,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124858064] [2020-07-21 15:39:55,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 15:39:55,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:55,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 15:39:55,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-21 15:39:55,026 INFO L87 Difference]: Start difference. First operand 589 states and 711 transitions. Second operand 8 states. [2020-07-21 15:39:56,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:56,401 INFO L93 Difference]: Finished difference Result 1665 states and 2164 transitions. [2020-07-21 15:39:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 15:39:56,402 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 132 [2020-07-21 15:39:56,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:56,409 INFO L225 Difference]: With dead ends: 1665 [2020-07-21 15:39:56,409 INFO L226 Difference]: Without dead ends: 1100 [2020-07-21 15:39:56,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-07-21 15:39:56,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-07-21 15:39:56,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 923. [2020-07-21 15:39:56,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2020-07-21 15:39:56,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1142 transitions. [2020-07-21 15:39:56,478 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1142 transitions. Word has length 132 [2020-07-21 15:39:56,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:56,478 INFO L479 AbstractCegarLoop]: Abstraction has 923 states and 1142 transitions. [2020-07-21 15:39:56,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 15:39:56,479 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1142 transitions. [2020-07-21 15:39:56,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-21 15:39:56,481 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:56,482 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] [2020-07-21 15:39:56,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:56,695 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:56,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:56,696 INFO L82 PathProgramCache]: Analyzing trace with hash 458891640, now seen corresponding path program 1 times [2020-07-21 15:39:56,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:56,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118201215] [2020-07-21 15:39:56,697 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:56,954 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:56,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:56,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:39:56,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:57,041 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 15:39:57,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:57,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118201215] [2020-07-21 15:39:57,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:57,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:57,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445033804] [2020-07-21 15:39:57,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:57,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:57,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:57,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:57,044 INFO L87 Difference]: Start difference. First operand 923 states and 1142 transitions. Second operand 6 states. [2020-07-21 15:39:57,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:57,113 INFO L93 Difference]: Finished difference Result 1854 states and 2380 transitions. [2020-07-21 15:39:57,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:39:57,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2020-07-21 15:39:57,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:57,121 INFO L225 Difference]: With dead ends: 1854 [2020-07-21 15:39:57,121 INFO L226 Difference]: Without dead ends: 955 [2020-07-21 15:39:57,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 15:39:57,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-07-21 15:39:57,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 943. [2020-07-21 15:39:57,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2020-07-21 15:39:57,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1166 transitions. [2020-07-21 15:39:57,189 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1166 transitions. Word has length 128 [2020-07-21 15:39:57,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:57,190 INFO L479 AbstractCegarLoop]: Abstraction has 943 states and 1166 transitions. [2020-07-21 15:39:57,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:57,190 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1166 transitions. [2020-07-21 15:39:57,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-21 15:39:57,194 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:57,194 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] [2020-07-21 15:39:57,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:57,410 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:57,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:57,410 INFO L82 PathProgramCache]: Analyzing trace with hash 2025649590, now seen corresponding path program 1 times [2020-07-21 15:39:57,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:57,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027635133] [2020-07-21 15:39:57,411 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:57,592 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:39:57,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:57,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 15:39:57,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:57,626 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 15:39:57,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:57,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027635133] [2020-07-21 15:39:57,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:57,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 15:39:57,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921877425] [2020-07-21 15:39:57,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 15:39:57,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:57,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 15:39:57,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:39:57,629 INFO L87 Difference]: Start difference. First operand 943 states and 1166 transitions. Second operand 5 states. [2020-07-21 15:39:57,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:57,675 INFO L93 Difference]: Finished difference Result 1739 states and 2206 transitions. [2020-07-21 15:39:57,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 15:39:57,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-07-21 15:39:57,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:57,682 INFO L225 Difference]: With dead ends: 1739 [2020-07-21 15:39:57,682 INFO L226 Difference]: Without dead ends: 820 [2020-07-21 15:39:57,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:39:57,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2020-07-21 15:39:57,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2020-07-21 15:39:57,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2020-07-21 15:39:57,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 998 transitions. [2020-07-21 15:39:57,741 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 998 transitions. Word has length 128 [2020-07-21 15:39:57,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:57,742 INFO L479 AbstractCegarLoop]: Abstraction has 820 states and 998 transitions. [2020-07-21 15:39:57,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 15:39:57,742 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 998 transitions. [2020-07-21 15:39:57,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-07-21 15:39:57,744 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:57,744 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 15:39:57,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:57,959 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:57,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:57,960 INFO L82 PathProgramCache]: Analyzing trace with hash -405492817, now seen corresponding path program 1 times [2020-07-21 15:39:57,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:57,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357578282] [2020-07-21 15:39:57,961 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:58,323 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:58,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 15:39:58,324 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:39:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 15:39:58,427 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:39:58,747 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 15:39:58,747 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 15:39:58,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:59,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:39:59 BoogieIcfgContainer [2020-07-21 15:39:59,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 15:39:59,162 INFO L168 Benchmark]: Toolchain (without parser) took 13736.30 ms. Allocated memory was 145.8 MB in the beginning and 382.7 MB in the end (delta: 237.0 MB). Free memory was 101.6 MB in the beginning and 272.1 MB in the end (delta: -170.4 MB). Peak memory consumption was 66.5 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:59,162 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 15:39:59,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 614.09 ms. Allocated memory was 145.8 MB in the beginning and 205.0 MB in the end (delta: 59.2 MB). Free memory was 101.2 MB in the beginning and 175.2 MB in the end (delta: -74.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:59,164 INFO L168 Benchmark]: Boogie Preprocessor took 88.07 ms. Allocated memory is still 205.0 MB. Free memory was 175.2 MB in the beginning and 170.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:59,165 INFO L168 Benchmark]: RCFGBuilder took 1082.09 ms. Allocated memory was 205.0 MB in the beginning and 236.5 MB in the end (delta: 31.5 MB). Free memory was 170.3 MB in the beginning and 197.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:59,165 INFO L168 Benchmark]: TraceAbstraction took 11946.35 ms. Allocated memory was 236.5 MB in the beginning and 382.7 MB in the end (delta: 146.3 MB). Free memory was 197.8 MB in the beginning and 272.1 MB in the end (delta: -74.3 MB). Peak memory consumption was 72.0 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:59,169 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 614.09 ms. Allocated memory was 145.8 MB in the beginning and 205.0 MB in the end (delta: 59.2 MB). Free memory was 101.2 MB in the beginning and 175.2 MB in the end (delta: -74.0 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.07 ms. Allocated memory is still 205.0 MB. Free memory was 175.2 MB in the beginning and 170.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1082.09 ms. Allocated memory was 205.0 MB in the beginning and 236.5 MB in the end (delta: 31.5 MB). Free memory was 170.3 MB in the beginning and 197.8 MB in the end (delta: -27.5 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11946.35 ms. Allocated memory was 236.5 MB in the beginning and 382.7 MB in the end (delta: 146.3 MB). Free memory was 197.8 MB in the beginning and 272.1 MB in the end (delta: -74.3 MB). Peak memory consumption was 72.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 405]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L147] int pumpRunning = 0; [L148] int systemActive = 1; [L436] int cleanupTimeShifts = 4; [L704] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [\old(cleanupTimeShifts)=42, \old(head)=60, \old(head)=29, \old(methaneLevelCritical)=93, \old(pumpRunning)=55, \old(systemActive)=92, \old(waterLevel)=61, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L512] int retValue_acc ; [L513] 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] [L517] 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] [L518] 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] [L519] 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] [L927] int retValue_acc ; [L930] retValue_acc = 1 [L931] 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] [L519] 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] [L519] tmp = valid_product() [L521] 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] [L523] 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] [L524] 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] [L503] 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] [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] 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] [L344] 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] [L346] 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] [L352] tmp = __VERIFIER_nondet_int() [L354] 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] [L356] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L356] 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] [L362] tmp___0 = __VERIFIER_nondet_int() [L364] 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] [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) 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___2=1, waterLevel=2] [L389] 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] [L155] 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] [L162] 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] [L164] 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] [L184] 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] [L187] 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] [L189] 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] [L299] int retValue_acc ; [L300] int tmp ; [L301] 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] [L305] 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] [L127] 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] [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L305] 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] [L305] tmp = isHighWaterSensorDry() [L307] COND FALSE !(\read(tmp)) [L310] 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] [L312] retValue_acc = tmp___0 [L313] 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] [L189] 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] [L189] tmp = isHighWaterLevel() [L191] 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] [L193] 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] [L218] 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] [L222] 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] [L243] 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] [L247] 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] [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L247] 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] [L247] retValue_acc = isMethaneLevelCritical() [L249] 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] [L222] 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] [L222] tmp = isMethaneAlarm() [L224] 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] [L228] 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] [L212] 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] [L228] 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] [L193] 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] [L164] 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] [L170] 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] [L411] int tmp ; [L412] 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] [L416] 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] [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=2] [L416] 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] [L416] tmp = isMethaneLevelCritical() [L418] 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] [L170] 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] [L389] 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___2=1, waterLevel=2] [L344] 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___2=1, waterLevel=2] [L346] 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___2=1, waterLevel=2] [L352] tmp = __VERIFIER_nondet_int() [L354] 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___2=1, waterLevel=2] [L362] tmp___0 = __VERIFIER_nondet_int() [L364] 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___2=1, waterLevel=2] [L366] 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] [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L366] 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___2=1, waterLevel=2] [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=1, waterLevel=2] [L389] 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] [L155] 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] [L157] 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] [L53] COND TRUE waterLevel > 0 [L54] 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] [L157] 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] [L162] 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] [L164] 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] [L184] 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] [L187] 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] [L202] 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] [L164] 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] [L170] 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] [L411] int tmp ; [L412] 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] [L416] 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] [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] 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] [L416] 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] [L416] tmp = isMethaneLevelCritical() [L418] 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] [L420] 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] [L254] int retValue_acc ; [L257] retValue_acc = pumpRunning [L258] 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] [L420] 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] [L420] tmp___0 = isPumpRunning() [L422] 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] [L424] 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] [L405] __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 39 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.6s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1894 SDtfs, 1087 SDslu, 3856 SDs, 0 SdLazy, 1622 SolverSat, 429 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1093 GetRequests, 1044 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=943occurred in iteration=11, 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, 12 MinimizatonAttempts, 274 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 1222 NumberOfCodeBlocks, 982 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1078 ConstructedInterpolants, 0 QuantifiedInterpolants, 180494 SizeOfPredicates, 28 NumberOfNonLiveVariables, 8572 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 151/151 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...