/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 00:54:32,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 00:54:32,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 00:54:32,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 00:54:32,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 00:54:32,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 00:54:32,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 00:54:32,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 00:54:32,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 00:54:32,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 00:54:32,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 00:54:32,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 00:54:32,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 00:54:32,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 00:54:32,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 00:54:32,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 00:54:32,172 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 00:54:32,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 00:54:32,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 00:54:32,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 00:54:32,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 00:54:32,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 00:54:32,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 00:54:32,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 00:54:32,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 00:54:32,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 00:54:32,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 00:54:32,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 00:54:32,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 00:54:32,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 00:54:32,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 00:54:32,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 00:54:32,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 00:54:32,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 00:54:32,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 00:54:32,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 00:54:32,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 00:54:32,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 00:54:32,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 00:54:32,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 00:54:32,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 00:54:32,191 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 00:54:32,204 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 00:54:32,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 00:54:32,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 00:54:32,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 00:54:32,206 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 00:54:32,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 00:54:32,207 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 00:54:32,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 00:54:32,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 00:54:32,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 00:54:32,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 00:54:32,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 00:54:32,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 00:54:32,208 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 00:54:32,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 00:54:32,208 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 00:54:32,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 00:54:32,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 00:54:32,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 00:54:32,209 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 00:54:32,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 00:54:32,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 00:54:32,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 00:54:32,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 00:54:32,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 00:54:32,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 00:54:32,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 00:54:32,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 00:54:32,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 00:54:32,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 00:54:32,515 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 00:54:32,527 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 00:54:32,531 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 00:54:32,532 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 00:54:32,532 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 00:54:32,533 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-07-20 00:54:32,592 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/145655917/4eed2b9b4fe84dec993b36ee6028e711/FLAG2cac5f9ec [2020-07-20 00:54:33,105 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 00:54:33,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-07-20 00:54:33,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/145655917/4eed2b9b4fe84dec993b36ee6028e711/FLAG2cac5f9ec [2020-07-20 00:54:33,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/145655917/4eed2b9b4fe84dec993b36ee6028e711 [2020-07-20 00:54:33,428 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 00:54:33,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 00:54:33,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 00:54:33,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 00:54:33,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 00:54:33,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:54:33" (1/1) ... [2020-07-20 00:54:33,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e98d2fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:54:33, skipping insertion in model container [2020-07-20 00:54:33,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:54:33" (1/1) ... [2020-07-20 00:54:33,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 00:54:33,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 00:54:33,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 00:54:33,962 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 00:54:34,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 00:54:34,105 INFO L208 MainTranslator]: Completed translation [2020-07-20 00:54:34,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:54:34 WrapperNode [2020-07-20 00:54:34,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 00:54:34,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 00:54:34,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 00:54:34,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 00:54:34,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:54:34" (1/1) ... [2020-07-20 00:54:34,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:54:34" (1/1) ... [2020-07-20 00:54:34,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:54:34" (1/1) ... [2020-07-20 00:54:34,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:54:34" (1/1) ... [2020-07-20 00:54:34,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:54:34" (1/1) ... [2020-07-20 00:54:34,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:54:34" (1/1) ... [2020-07-20 00:54:34,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:54:34" (1/1) ... [2020-07-20 00:54:34,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 00:54:34,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 00:54:34,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 00:54:34,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 00:54:34,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:54:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 00:54:34,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 00:54:34,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 00:54:34,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 00:54:34,270 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 00:54:34,270 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 00:54:34,271 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 00:54:34,271 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 00:54:34,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 00:54:34,272 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 00:54:34,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 00:54:34,273 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 00:54:34,273 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 00:54:34,273 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 00:54:34,274 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-20 00:54:34,274 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 00:54:34,275 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 00:54:34,275 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 00:54:34,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 00:54:34,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 00:54:34,275 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 00:54:34,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 00:54:34,275 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-20 00:54:34,276 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-20 00:54:34,276 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 00:54:34,276 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 00:54:34,277 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 00:54:34,277 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 00:54:34,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-20 00:54:34,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 00:54:34,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 00:54:34,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 00:54:34,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 00:54:34,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 00:54:34,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 00:54:34,278 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 00:54:34,278 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 00:54:34,279 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 00:54:34,279 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 00:54:34,279 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 00:54:34,279 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 00:54:34,279 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 00:54:34,279 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-20 00:54:34,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 00:54:34,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 00:54:34,280 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 00:54:34,280 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 00:54:34,280 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 00:54:34,280 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 00:54:34,280 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 00:54:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 00:54:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 00:54:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 00:54:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 00:54:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 00:54:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 00:54:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 00:54:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 00:54:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 00:54:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-20 00:54:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 00:54:34,282 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 00:54:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 00:54:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 00:54:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 00:54:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-20 00:54:34,283 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 00:54:34,284 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 00:54:34,284 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 00:54:34,284 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-20 00:54:34,284 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 00:54:34,284 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 00:54:34,284 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 00:54:34,285 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 00:54:34,285 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-20 00:54:34,286 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-20 00:54:34,286 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 00:54:34,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 00:54:34,286 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 00:54:34,287 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 00:54:34,287 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 00:54:34,287 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 00:54:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 00:54:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 00:54:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 00:54:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 00:54:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 00:54:34,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 00:54:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 00:54:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 00:54:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 00:54:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 00:54:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 00:54:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 00:54:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 00:54:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 00:54:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 00:54:34,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 00:54:34,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 00:54:35,329 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 00:54:35,329 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 00:54:35,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:54:35 BoogieIcfgContainer [2020-07-20 00:54:35,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 00:54:35,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 00:54:35,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 00:54:35,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 00:54:35,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:54:33" (1/3) ... [2020-07-20 00:54:35,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3709da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:54:35, skipping insertion in model container [2020-07-20 00:54:35,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:54:34" (2/3) ... [2020-07-20 00:54:35,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3709da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:54:35, skipping insertion in model container [2020-07-20 00:54:35,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:54:35" (3/3) ... [2020-07-20 00:54:35,348 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2020-07-20 00:54:35,358 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 00:54:35,366 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 00:54:35,378 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 00:54:35,398 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 00:54:35,398 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 00:54:35,399 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 00:54:35,399 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 00:54:35,399 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 00:54:35,400 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 00:54:35,400 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 00:54:35,400 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 00:54:35,422 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-07-20 00:54:35,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 00:54:35,432 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:54:35,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:54:35,433 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:54:35,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:54:35,439 INFO L82 PathProgramCache]: Analyzing trace with hash -645790062, now seen corresponding path program 1 times [2020-07-20 00:54:35,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:54:35,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236431857] [2020-07-20 00:54:35,449 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62477c79 [2020-07-20 00:54:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:36,093 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-20 00:54:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:36,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:54:36,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236431857] [2020-07-20 00:54:36,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:54:36,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 00:54:36,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772092522] [2020-07-20 00:54:36,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 00:54:36,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:54:36,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 00:54:36,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 00:54:36,221 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2020-07-20 00:54:37,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:54:37,403 INFO L93 Difference]: Finished difference Result 338 states and 441 transitions. [2020-07-20 00:54:37,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 00:54:37,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-07-20 00:54:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:54:37,424 INFO L225 Difference]: With dead ends: 338 [2020-07-20 00:54:37,424 INFO L226 Difference]: Without dead ends: 182 [2020-07-20 00:54:37,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 00:54:37,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-07-20 00:54:37,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147. [2020-07-20 00:54:37,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-07-20 00:54:37,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2020-07-20 00:54:37,538 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 46 [2020-07-20 00:54:37,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:54:37,539 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2020-07-20 00:54:37,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 00:54:37,540 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2020-07-20 00:54:37,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 00:54:37,549 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:54:37,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:54:37,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 00:54:37,551 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:54:37,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:54:37,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1894049218, now seen corresponding path program 1 times [2020-07-20 00:54:37,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:54:37,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259081265] [2020-07-20 00:54:37,552 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62477c79 [2020-07-20 00:54:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:37,910 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-20 00:54:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:54:37,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259081265] [2020-07-20 00:54:37,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:54:37,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 00:54:37,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313015192] [2020-07-20 00:54:37,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 00:54:37,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:54:37,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 00:54:37,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 00:54:37,951 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 4 states. [2020-07-20 00:54:38,380 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 00:54:39,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:54:39,368 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2020-07-20 00:54:39,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 00:54:39,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-07-20 00:54:39,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:54:39,372 INFO L225 Difference]: With dead ends: 267 [2020-07-20 00:54:39,372 INFO L226 Difference]: Without dead ends: 166 [2020-07-20 00:54:39,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 00:54:39,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-20 00:54:39,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-07-20 00:54:39,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-07-20 00:54:39,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-07-20 00:54:39,419 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 47 [2020-07-20 00:54:39,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:54:39,420 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-07-20 00:54:39,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 00:54:39,420 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-07-20 00:54:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-20 00:54:39,422 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:54:39,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:54:39,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 00:54:39,422 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:54:39,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:54:39,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1275657422, now seen corresponding path program 1 times [2020-07-20 00:54:39,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:54:39,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001224811] [2020-07-20 00:54:39,423 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62477c79 [2020-07-20 00:54:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:39,734 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-20 00:54:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:39,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:54:39,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001224811] [2020-07-20 00:54:39,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:54:39,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 00:54:39,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251226952] [2020-07-20 00:54:39,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 00:54:39,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:54:39,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 00:54:39,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-20 00:54:39,855 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 8 states. [2020-07-20 00:54:40,199 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-20 00:54:40,504 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-07-20 00:54:40,769 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-20 00:54:40,970 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-20 00:54:42,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:54:42,245 INFO L93 Difference]: Finished difference Result 280 states and 346 transitions. [2020-07-20 00:54:42,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 00:54:42,246 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-07-20 00:54:42,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:54:42,249 INFO L225 Difference]: With dead ends: 280 [2020-07-20 00:54:42,249 INFO L226 Difference]: Without dead ends: 166 [2020-07-20 00:54:42,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-07-20 00:54:42,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-20 00:54:42,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-07-20 00:54:42,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-07-20 00:54:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2020-07-20 00:54:42,290 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 52 [2020-07-20 00:54:42,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:54:42,290 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2020-07-20 00:54:42,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 00:54:42,290 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2020-07-20 00:54:42,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-07-20 00:54:42,292 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:54:42,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:54:42,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 00:54:42,293 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:54:42,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:54:42,293 INFO L82 PathProgramCache]: Analyzing trace with hash 120986168, now seen corresponding path program 1 times [2020-07-20 00:54:42,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:54:42,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770664355] [2020-07-20 00:54:42,294 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62477c79 [2020-07-20 00:54:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:42,589 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-20 00:54:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:54:42,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770664355] [2020-07-20 00:54:42,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:54:42,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 00:54:42,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618035039] [2020-07-20 00:54:42,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 00:54:42,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:54:42,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 00:54:42,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 00:54:42,663 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand 6 states. [2020-07-20 00:54:42,996 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-20 00:54:44,096 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 00:54:44,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:54:44,849 INFO L93 Difference]: Finished difference Result 383 states and 475 transitions. [2020-07-20 00:54:44,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 00:54:44,849 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-07-20 00:54:44,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:54:44,853 INFO L225 Difference]: With dead ends: 383 [2020-07-20 00:54:44,854 INFO L226 Difference]: Without dead ends: 269 [2020-07-20 00:54:44,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-07-20 00:54:44,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-07-20 00:54:44,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 226. [2020-07-20 00:54:44,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-07-20 00:54:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 256 transitions. [2020-07-20 00:54:44,901 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 256 transitions. Word has length 70 [2020-07-20 00:54:44,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:54:44,901 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 256 transitions. [2020-07-20 00:54:44,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 00:54:44,902 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 256 transitions. [2020-07-20 00:54:44,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-20 00:54:44,903 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:54:44,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:54:44,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 00:54:44,904 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:54:44,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:54:44,904 INFO L82 PathProgramCache]: Analyzing trace with hash 89608959, now seen corresponding path program 1 times [2020-07-20 00:54:44,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:54:44,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851161695] [2020-07-20 00:54:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62477c79 [2020-07-20 00:54:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:45,161 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-20 00:54:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:45,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:54:45,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851161695] [2020-07-20 00:54:45,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:54:45,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-20 00:54:45,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216600485] [2020-07-20 00:54:45,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 00:54:45,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:54:45,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 00:54:45,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-07-20 00:54:45,326 INFO L87 Difference]: Start difference. First operand 226 states and 256 transitions. Second operand 11 states. [2020-07-20 00:54:45,888 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-20 00:54:46,124 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 00:54:46,338 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 00:54:46,991 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 00:54:47,230 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-07-20 00:54:47,463 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-20 00:54:47,689 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-20 00:54:48,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:54:48,690 INFO L93 Difference]: Finished difference Result 470 states and 561 transitions. [2020-07-20 00:54:48,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 00:54:48,691 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-07-20 00:54:48,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:54:48,696 INFO L225 Difference]: With dead ends: 470 [2020-07-20 00:54:48,696 INFO L226 Difference]: Without dead ends: 268 [2020-07-20 00:54:48,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-07-20 00:54:48,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-07-20 00:54:48,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 231. [2020-07-20 00:54:48,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-07-20 00:54:48,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 261 transitions. [2020-07-20 00:54:48,768 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 261 transitions. Word has length 84 [2020-07-20 00:54:48,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:54:48,769 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 261 transitions. [2020-07-20 00:54:48,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 00:54:48,769 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 261 transitions. [2020-07-20 00:54:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-20 00:54:48,770 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:54:48,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:54:48,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 00:54:48,771 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:54:48,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:54:48,771 INFO L82 PathProgramCache]: Analyzing trace with hash -611990915, now seen corresponding path program 1 times [2020-07-20 00:54:48,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:54:48,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419790921] [2020-07-20 00:54:48,771 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62477c79 [2020-07-20 00:54:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:49,063 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-20 00:54:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:54:49,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419790921] [2020-07-20 00:54:49,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:54:49,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 00:54:49,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334159501] [2020-07-20 00:54:49,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 00:54:49,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:54:49,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 00:54:49,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-20 00:54:49,169 INFO L87 Difference]: Start difference. First operand 231 states and 261 transitions. Second operand 8 states. [2020-07-20 00:54:49,706 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-20 00:54:50,824 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-20 00:54:51,071 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-20 00:54:51,293 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-20 00:54:51,498 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-20 00:54:51,775 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 00:54:52,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:54:52,921 INFO L93 Difference]: Finished difference Result 691 states and 839 transitions. [2020-07-20 00:54:52,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 00:54:52,921 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-07-20 00:54:52,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:54:52,926 INFO L225 Difference]: With dead ends: 691 [2020-07-20 00:54:52,926 INFO L226 Difference]: Without dead ends: 484 [2020-07-20 00:54:52,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-07-20 00:54:52,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-07-20 00:54:53,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 417. [2020-07-20 00:54:53,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-20 00:54:53,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 472 transitions. [2020-07-20 00:54:53,004 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 472 transitions. Word has length 84 [2020-07-20 00:54:53,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:54:53,005 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 472 transitions. [2020-07-20 00:54:53,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 00:54:53,005 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 472 transitions. [2020-07-20 00:54:53,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-20 00:54:53,006 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:54:53,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:54:53,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 00:54:53,007 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:54:53,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:54:53,007 INFO L82 PathProgramCache]: Analyzing trace with hash 885407033, now seen corresponding path program 1 times [2020-07-20 00:54:53,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:54:53,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614118030] [2020-07-20 00:54:53,008 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62477c79 [2020-07-20 00:54:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:53,265 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-20 00:54:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:54:53,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614118030] [2020-07-20 00:54:53,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:54:53,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 00:54:53,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538038552] [2020-07-20 00:54:53,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 00:54:53,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:54:53,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 00:54:53,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-20 00:54:53,383 INFO L87 Difference]: Start difference. First operand 417 states and 472 transitions. Second operand 9 states. [2020-07-20 00:54:53,867 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-20 00:54:54,921 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-20 00:54:55,129 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-20 00:54:55,384 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-20 00:54:55,618 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-20 00:54:55,881 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 00:54:56,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:54:56,997 INFO L93 Difference]: Finished difference Result 526 states and 652 transitions. [2020-07-20 00:54:56,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 00:54:56,998 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-07-20 00:54:56,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:54:57,003 INFO L225 Difference]: With dead ends: 526 [2020-07-20 00:54:57,003 INFO L226 Difference]: Without dead ends: 523 [2020-07-20 00:54:57,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-07-20 00:54:57,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-07-20 00:54:57,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 417. [2020-07-20 00:54:57,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-20 00:54:57,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 471 transitions. [2020-07-20 00:54:57,103 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 471 transitions. Word has length 88 [2020-07-20 00:54:57,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:54:57,104 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 471 transitions. [2020-07-20 00:54:57,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 00:54:57,104 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 471 transitions. [2020-07-20 00:54:57,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-20 00:54:57,105 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:54:57,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:54:57,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 00:54:57,106 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:54:57,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:54:57,106 INFO L82 PathProgramCache]: Analyzing trace with hash -581525316, now seen corresponding path program 1 times [2020-07-20 00:54:57,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:54:57,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807876397] [2020-07-20 00:54:57,107 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62477c79 [2020-07-20 00:54:57,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:57,367 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-20 00:54:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:54:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:54:57,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807876397] [2020-07-20 00:54:57,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:54:57,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-20 00:54:57,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005748697] [2020-07-20 00:54:57,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 00:54:57,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:54:57,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 00:54:57,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-07-20 00:54:57,554 INFO L87 Difference]: Start difference. First operand 417 states and 471 transitions. Second operand 11 states. [2020-07-20 00:54:58,106 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-20 00:54:58,331 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 00:54:58,545 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 00:54:59,174 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 00:54:59,408 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 00:54:59,639 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 00:55:00,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:55:00,777 INFO L93 Difference]: Finished difference Result 924 states and 1122 transitions. [2020-07-20 00:55:00,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 00:55:00,777 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 89 [2020-07-20 00:55:00,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:55:00,781 INFO L225 Difference]: With dead ends: 924 [2020-07-20 00:55:00,781 INFO L226 Difference]: Without dead ends: 531 [2020-07-20 00:55:00,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-07-20 00:55:00,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-07-20 00:55:00,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 425. [2020-07-20 00:55:00,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-07-20 00:55:00,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 479 transitions. [2020-07-20 00:55:00,858 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 479 transitions. Word has length 89 [2020-07-20 00:55:00,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:55:00,858 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 479 transitions. [2020-07-20 00:55:00,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 00:55:00,859 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 479 transitions. [2020-07-20 00:55:00,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-20 00:55:00,860 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:55:00,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:55:00,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-20 00:55:00,861 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:55:00,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:55:00,861 INFO L82 PathProgramCache]: Analyzing trace with hash -856284930, now seen corresponding path program 1 times [2020-07-20 00:55:00,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:55:00,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251709625] [2020-07-20 00:55:00,862 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62477c79 [2020-07-20 00:55:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:01,072 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-20 00:55:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:01,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:55:01,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251709625] [2020-07-20 00:55:01,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:55:01,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 00:55:01,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103351206] [2020-07-20 00:55:01,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 00:55:01,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:55:01,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 00:55:01,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-20 00:55:01,243 INFO L87 Difference]: Start difference. First operand 425 states and 479 transitions. Second operand 9 states. [2020-07-20 00:55:02,172 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-07-20 00:55:02,419 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-07-20 00:55:02,649 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 00:55:02,882 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-07-20 00:55:04,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:55:04,145 INFO L93 Difference]: Finished difference Result 926 states and 1120 transitions. [2020-07-20 00:55:04,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 00:55:04,146 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-07-20 00:55:04,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:55:04,149 INFO L225 Difference]: With dead ends: 926 [2020-07-20 00:55:04,150 INFO L226 Difference]: Without dead ends: 525 [2020-07-20 00:55:04,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-07-20 00:55:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-07-20 00:55:04,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 425. [2020-07-20 00:55:04,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-07-20 00:55:04,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 477 transitions. [2020-07-20 00:55:04,230 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 477 transitions. Word has length 89 [2020-07-20 00:55:04,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:55:04,231 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 477 transitions. [2020-07-20 00:55:04,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 00:55:04,232 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 477 transitions. [2020-07-20 00:55:04,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-20 00:55:04,235 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:55:04,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:55:04,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 00:55:04,235 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:55:04,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:55:04,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1368774939, now seen corresponding path program 1 times [2020-07-20 00:55:04,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:55:04,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673769280] [2020-07-20 00:55:04,236 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62477c79 [2020-07-20 00:55:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:04,508 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-07-20 00:55:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 00:55:04,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 00:55:04,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673769280] [2020-07-20 00:55:04,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 00:55:04,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 00:55:04,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042929141] [2020-07-20 00:55:04,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 00:55:04,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 00:55:04,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 00:55:04,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 00:55:04,650 INFO L87 Difference]: Start difference. First operand 425 states and 477 transitions. Second operand 7 states. [2020-07-20 00:55:05,090 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-20 00:55:05,614 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-07-20 00:55:07,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 00:55:07,857 INFO L93 Difference]: Finished difference Result 1286 states and 1634 transitions. [2020-07-20 00:55:07,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-20 00:55:07,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-07-20 00:55:07,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 00:55:07,865 INFO L225 Difference]: With dead ends: 1286 [2020-07-20 00:55:07,865 INFO L226 Difference]: Without dead ends: 885 [2020-07-20 00:55:07,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-07-20 00:55:07,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-07-20 00:55:07,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 765. [2020-07-20 00:55:07,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-07-20 00:55:07,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 895 transitions. [2020-07-20 00:55:07,997 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 895 transitions. Word has length 89 [2020-07-20 00:55:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 00:55:07,997 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 895 transitions. [2020-07-20 00:55:07,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 00:55:07,998 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 895 transitions. [2020-07-20 00:55:07,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-07-20 00:55:07,999 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 00:55:07,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 00:55:08,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-20 00:55:08,000 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 00:55:08,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 00:55:08,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1535755999, now seen corresponding path program 1 times [2020-07-20 00:55:08,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 00:55:08,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350584927] [2020-07-20 00:55:08,001 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@62477c79 [2020-07-20 00:55:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 00:55:08,046 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 00:55:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 00:55:08,087 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 00:55:08,171 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 00:55:08,171 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 00:55:08,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 00:55:08,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 12:55:08 BoogieIcfgContainer [2020-07-20 00:55:08,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 00:55:08,308 INFO L168 Benchmark]: Toolchain (without parser) took 34877.85 ms. Allocated memory was 143.1 MB in the beginning and 651.2 MB in the end (delta: 508.0 MB). Free memory was 98.4 MB in the beginning and 78.7 MB in the end (delta: 19.7 MB). Peak memory consumption was 527.7 MB. Max. memory is 7.1 GB. [2020-07-20 00:55:08,310 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 143.1 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 00:55:08,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.89 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 97.9 MB in the beginning and 167.6 MB in the end (delta: -69.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-07-20 00:55:08,312 INFO L168 Benchmark]: Boogie Preprocessor took 84.98 ms. Allocated memory is still 200.3 MB. Free memory was 166.9 MB in the beginning and 162.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-07-20 00:55:08,313 INFO L168 Benchmark]: RCFGBuilder took 1146.58 ms. Allocated memory was 200.3 MB in the beginning and 229.6 MB in the end (delta: 29.4 MB). Free memory was 162.7 MB in the beginning and 191.5 MB in the end (delta: -28.8 MB). Peak memory consumption was 86.3 MB. Max. memory is 7.1 GB. [2020-07-20 00:55:08,315 INFO L168 Benchmark]: TraceAbstraction took 32965.66 ms. Allocated memory was 229.6 MB in the beginning and 651.2 MB in the end (delta: 421.5 MB). Free memory was 190.1 MB in the beginning and 78.7 MB in the end (delta: 111.4 MB). Peak memory consumption was 532.9 MB. Max. memory is 7.1 GB. [2020-07-20 00:55:08,320 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 143.1 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.89 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 97.9 MB in the beginning and 167.6 MB in the end (delta: -69.7 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.98 ms. Allocated memory is still 200.3 MB. Free memory was 166.9 MB in the beginning and 162.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1146.58 ms. Allocated memory was 200.3 MB in the beginning and 229.6 MB in the end (delta: 29.4 MB). Free memory was 162.7 MB in the beginning and 191.5 MB in the end (delta: -28.8 MB). Peak memory consumption was 86.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32965.66 ms. Allocated memory was 229.6 MB in the beginning and 651.2 MB in the end (delta: 421.5 MB). Free memory was 190.1 MB in the beginning and 78.7 MB in the end (delta: 111.4 MB). Peak memory consumption was 532.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 216]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L691] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L889] int waterLevel = 1; [L890] int methaneLevelCritical = 0; VAL [\old(cleanupTimeShifts)=170, \old(head)=176, \old(head)=164, \old(methaneLevelCritical)=149, \old(pumpRunning)=138, \old(systemActive)=137, \old(waterLevel)=147, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L121] int retValue_acc ; [L122] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L126] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L127] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L487] int retValue_acc ; [L490] retValue_acc = 1 [L491] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L128] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L132] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L133] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L112] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L146] int splverifierCounter ; [L147] int tmp ; [L148] int tmp___0 ; [L149] int tmp___1 ; [L150] int tmp___2 ; [L153] 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] [L155] 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] [L157] 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] [L163] tmp = __VERIFIER_nondet_int() [L165] 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] [L167] 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] [L907] COND TRUE waterLevel < 2 [L908] 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] [L167] 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] [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L177] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L919] COND FALSE !(\read(methaneLevelCritical)) [L922] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L177] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___2)) [L191] tmp___1 = __VERIFIER_nondet_int() [L193] COND TRUE \read(tmp___1) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___1=1, tmp___2=0, waterLevel=2] [L200] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L237] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L244] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L246] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L318] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L321] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L336] CALL processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L292] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L295] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L310] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L266] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L269] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L271] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L421] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L969] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L972] COND FALSE !(waterLevel < 2) [L976] retValue_acc = 0 [L977] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L421] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L421] tmp = isHighWaterSensorDry() [L423] COND FALSE !(\read(tmp)) [L426] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L271] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L271] tmp = isHighWaterLevel() [L273] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L275] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L346] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L275] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L310] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L336] RET processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L246] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L252] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L497] int tmp ; [L498] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L502] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L928] int retValue_acc ; [L931] retValue_acc = methaneLevelCritical [L932] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L502] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L502] tmp = isMethaneLevelCritical() [L504] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L506] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L370] int retValue_acc ; [L373] retValue_acc = pumpRunning [L374] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L506] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L506] tmp___0 = isPumpRunning() [L508] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L510] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L216] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 249 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.7s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 27.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1333 SDtfs, 2192 SDslu, 1443 SDs, 0 SdLazy, 6724 SolverSat, 1453 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 270 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 11.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=765occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 670 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 831 NumberOfCodeBlocks, 831 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 728 ConstructedInterpolants, 0 QuantifiedInterpolants, 230433 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...