/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 15:39:34,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 15:39:34,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 15:39:34,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 15:39:34,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 15:39:34,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 15:39:34,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 15:39:34,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 15:39:34,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 15:39:34,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 15:39:34,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 15:39:34,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 15:39:34,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 15:39:34,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 15:39:34,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 15:39:34,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 15:39:34,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 15:39:34,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 15:39:34,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 15:39:34,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 15:39:34,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 15:39:34,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 15:39:34,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 15:39:34,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 15:39:34,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 15:39:34,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 15:39:34,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 15:39:34,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 15:39:34,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 15:39:34,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 15:39:34,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 15:39:34,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 15:39:34,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 15:39:34,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 15:39:34,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 15:39:34,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 15:39:34,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 15:39:34,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 15:39:34,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 15:39:34,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 15:39:34,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 15:39:35,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 15:39:35,014 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 15:39:35,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 15:39:35,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 15:39:35,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 15:39:35,016 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 15:39:35,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 15:39:35,017 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 15:39:35,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 15:39:35,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 15:39:35,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 15:39:35,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 15:39:35,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 15:39:35,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 15:39:35,018 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 15:39:35,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 15:39:35,018 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 15:39:35,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 15:39:35,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 15:39:35,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 15:39:35,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 15:39:35,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 15:39:35,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:39:35,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 15:39:35,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 15:39:35,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 15:39:35,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 15:39:35,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:35,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 15:39:35,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 15:39:35,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 15:39:35,337 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 15:39:35,350 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 15:39:35,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 15:39:35,355 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 15:39:35,356 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 15:39:35,356 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-07-21 15:39:35,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5dd7ada3/c6ec2901163d4fa2957ceb3e147ee776/FLAGc06e6aaab [2020-07-21 15:39:35,989 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 15:39:35,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product36.cil.c [2020-07-21 15:39:36,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5dd7ada3/c6ec2901163d4fa2957ceb3e147ee776/FLAGc06e6aaab [2020-07-21 15:39:36,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5dd7ada3/c6ec2901163d4fa2957ceb3e147ee776 [2020-07-21 15:39:36,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 15:39:36,299 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 15:39:36,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 15:39:36,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 15:39:36,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 15:39:36,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76c9b653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36, skipping insertion in model container [2020-07-21 15:39:36,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:36,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 15:39:36,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 15:39:36,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:39:36,857 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 15:39:36,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:39:36,993 INFO L208 MainTranslator]: Completed translation [2020-07-21 15:39:36,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36 WrapperNode [2020-07-21 15:39:36,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 15:39:36,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 15:39:36,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 15:39:36,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 15:39:37,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:37,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:37,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:37,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:37,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:37,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:37,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... [2020-07-21 15:39:37,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 15:39:37,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 15:39:37,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 15:39:37,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 15:39:37,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:39:37,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 15:39:37,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 15:39:37,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-21 15:39:37,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-21 15:39:37,174 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-21 15:39:37,174 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-21 15:39:37,175 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-21 15:39:37,175 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-21 15:39:37,175 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-21 15:39:37,175 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-21 15:39:37,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-21 15:39:37,176 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-21 15:39:37,176 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-21 15:39:37,177 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-21 15:39:37,177 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-07-21 15:39:37,177 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-21 15:39:37,178 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-21 15:39:37,178 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-21 15:39:37,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-21 15:39:37,179 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-21 15:39:37,179 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-21 15:39:37,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-21 15:39:37,179 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-21 15:39:37,179 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-21 15:39:37,180 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-21 15:39:37,180 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-21 15:39:37,181 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-21 15:39:37,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-21 15:39:37,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-21 15:39:37,181 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-21 15:39:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-21 15:39:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-21 15:39:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-21 15:39:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-21 15:39:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-21 15:39:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-21 15:39:37,183 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-21 15:39:37,183 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-21 15:39:37,183 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 15:39:37,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 15:39:37,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 15:39:37,183 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-21 15:39:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-21 15:39:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-21 15:39:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-21 15:39:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-21 15:39:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-21 15:39:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-21 15:39:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-21 15:39:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-21 15:39:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-21 15:39:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-21 15:39:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-21 15:39:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-07-21 15:39:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-21 15:39:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-21 15:39:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-21 15:39:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-21 15:39:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-21 15:39:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 15:39:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-21 15:39:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-21 15:39:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-21 15:39:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-21 15:39:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-21 15:39:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-21 15:39:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-21 15:39:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-21 15:39:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-21 15:39:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-21 15:39:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 15:39:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 15:39:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-21 15:39:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 15:39:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 15:39:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 15:39:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 15:39:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-21 15:39:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 15:39:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-21 15:39:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-21 15:39:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 15:39:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-21 15:39:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-21 15:39:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-21 15:39:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-21 15:39:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-21 15:39:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-21 15:39:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 15:39:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 15:39:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 15:39:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 15:39:38,254 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 15:39:38,254 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 15:39:38,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:39:38 BoogieIcfgContainer [2020-07-21 15:39:38,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 15:39:38,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 15:39:38,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 15:39:38,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 15:39:38,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:39:36" (1/3) ... [2020-07-21 15:39:38,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c97c09d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:39:38, skipping insertion in model container [2020-07-21 15:39:38,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:39:36" (2/3) ... [2020-07-21 15:39:38,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c97c09d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:39:38, skipping insertion in model container [2020-07-21 15:39:38,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:39:38" (3/3) ... [2020-07-21 15:39:38,268 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2020-07-21 15:39:38,279 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 15:39:38,288 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 15:39:38,302 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 15:39:38,328 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 15:39:38,328 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 15:39:38,328 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 15:39:38,328 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 15:39:38,329 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 15:39:38,329 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 15:39:38,329 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 15:39:38,329 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 15:39:38,352 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-07-21 15:39:38,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-21 15:39:38,362 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:38,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:38,363 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:38,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:38,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1779053206, now seen corresponding path program 1 times [2020-07-21 15:39:38,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:38,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485713931] [2020-07-21 15:39:38,380 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:38,729 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:38,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:38,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 15:39:38,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:38,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:38,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:38,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485713931] [2020-07-21 15:39:38,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:38,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 15:39:38,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560960225] [2020-07-21 15:39:38,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 15:39:38,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:38,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 15:39:38,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:39:38,812 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 2 states. [2020-07-21 15:39:38,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:38,859 INFO L93 Difference]: Finished difference Result 236 states and 291 transitions. [2020-07-21 15:39:38,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 15:39:38,861 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-21 15:39:38,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:38,876 INFO L225 Difference]: With dead ends: 236 [2020-07-21 15:39:38,876 INFO L226 Difference]: Without dead ends: 118 [2020-07-21 15:39:38,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 15:39:38,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-21 15:39:38,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-07-21 15:39:38,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-07-21 15:39:38,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-07-21 15:39:38,944 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 46 [2020-07-21 15:39:38,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:38,944 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-07-21 15:39:38,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 15:39:38,945 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-07-21 15:39:38,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-21 15:39:38,952 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:38,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:39,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:39,169 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:39,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:39,171 INFO L82 PathProgramCache]: Analyzing trace with hash 83171531, now seen corresponding path program 1 times [2020-07-21 15:39:39,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:39,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829331288] [2020-07-21 15:39:39,172 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:39,514 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:39,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:39,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 15:39:39,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:39,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:39,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829331288] [2020-07-21 15:39:39,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:39,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:39:39,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627891283] [2020-07-21 15:39:39,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:39:39,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:39,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:39:39,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:39,562 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 3 states. [2020-07-21 15:39:39,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:39,581 INFO L93 Difference]: Finished difference Result 172 states and 199 transitions. [2020-07-21 15:39:39,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:39:39,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-21 15:39:39,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:39,584 INFO L225 Difference]: With dead ends: 172 [2020-07-21 15:39:39,584 INFO L226 Difference]: Without dead ends: 109 [2020-07-21 15:39:39,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:39,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-21 15:39:39,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-07-21 15:39:39,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-07-21 15:39:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-07-21 15:39:39,598 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 47 [2020-07-21 15:39:39,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:39,599 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-07-21 15:39:39,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:39:39,599 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-07-21 15:39:39,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-21 15:39:39,605 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:39,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:39,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:39,819 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:39,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:39,819 INFO L82 PathProgramCache]: Analyzing trace with hash -532729622, now seen corresponding path program 1 times [2020-07-21 15:39:39,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:39,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567197956] [2020-07-21 15:39:39,820 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:40,105 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:40,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:40,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 15:39:40,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:40,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:40,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567197956] [2020-07-21 15:39:40,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:40,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:39:40,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751010066] [2020-07-21 15:39:40,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:39:40,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:40,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:39:40,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:40,143 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 3 states. [2020-07-21 15:39:40,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:40,168 INFO L93 Difference]: Finished difference Result 275 states and 326 transitions. [2020-07-21 15:39:40,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:39:40,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-07-21 15:39:40,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:40,172 INFO L225 Difference]: With dead ends: 275 [2020-07-21 15:39:40,172 INFO L226 Difference]: Without dead ends: 190 [2020-07-21 15:39:40,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:40,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-07-21 15:39:40,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 178. [2020-07-21 15:39:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-07-21 15:39:40,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 209 transitions. [2020-07-21 15:39:40,195 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 209 transitions. Word has length 52 [2020-07-21 15:39:40,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:40,195 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 209 transitions. [2020-07-21 15:39:40,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:39:40,196 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 209 transitions. [2020-07-21 15:39:40,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-21 15:39:40,198 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:40,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:40,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:40,412 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:40,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:40,413 INFO L82 PathProgramCache]: Analyzing trace with hash 692647563, now seen corresponding path program 1 times [2020-07-21 15:39:40,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:40,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348183384] [2020-07-21 15:39:40,414 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:40,716 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:40,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:40,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:39:40,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:40,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:40,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348183384] [2020-07-21 15:39:40,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:40,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:40,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359461323] [2020-07-21 15:39:40,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:40,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:40,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:40,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:40,767 INFO L87 Difference]: Start difference. First operand 178 states and 209 transitions. Second operand 6 states. [2020-07-21 15:39:41,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:41,083 INFO L93 Difference]: Finished difference Result 436 states and 534 transitions. [2020-07-21 15:39:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 15:39:41,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-21 15:39:41,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:41,088 INFO L225 Difference]: With dead ends: 436 [2020-07-21 15:39:41,088 INFO L226 Difference]: Without dead ends: 282 [2020-07-21 15:39:41,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 15:39:41,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-07-21 15:39:41,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 274. [2020-07-21 15:39:41,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-07-21 15:39:41,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 327 transitions. [2020-07-21 15:39:41,117 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 327 transitions. Word has length 57 [2020-07-21 15:39:41,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:41,118 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 327 transitions. [2020-07-21 15:39:41,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:41,118 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 327 transitions. [2020-07-21 15:39:41,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-07-21 15:39:41,121 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:41,121 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] [2020-07-21 15:39:41,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:41,335 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:41,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:41,335 INFO L82 PathProgramCache]: Analyzing trace with hash 954578145, now seen corresponding path program 1 times [2020-07-21 15:39:41,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:41,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252598439] [2020-07-21 15:39:41,336 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:41,524 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:39:41,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:41,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 15:39:41,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:41,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:41,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252598439] [2020-07-21 15:39:41,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:41,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 15:39:41,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715783818] [2020-07-21 15:39:41,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 15:39:41,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:41,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 15:39:41,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:39:41,557 INFO L87 Difference]: Start difference. First operand 274 states and 327 transitions. Second operand 5 states. [2020-07-21 15:39:41,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:41,591 INFO L93 Difference]: Finished difference Result 538 states and 664 transitions. [2020-07-21 15:39:41,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 15:39:41,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-07-21 15:39:41,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:41,595 INFO L225 Difference]: With dead ends: 538 [2020-07-21 15:39:41,595 INFO L226 Difference]: Without dead ends: 288 [2020-07-21 15:39:41,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:39:41,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-07-21 15:39:41,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 282. [2020-07-21 15:39:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-07-21 15:39:41,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 335 transitions. [2020-07-21 15:39:41,622 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 335 transitions. Word has length 75 [2020-07-21 15:39:41,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:41,623 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 335 transitions. [2020-07-21 15:39:41,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 15:39:41,623 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 335 transitions. [2020-07-21 15:39:41,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-07-21 15:39:41,627 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:41,628 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] [2020-07-21 15:39:41,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:41,843 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:41,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:41,844 INFO L82 PathProgramCache]: Analyzing trace with hash 445105055, now seen corresponding path program 1 times [2020-07-21 15:39:41,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:41,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119320982] [2020-07-21 15:39:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:42,115 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:42,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:42,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 15:39:42,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:42,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:42,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119320982] [2020-07-21 15:39:42,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:42,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 15:39:42,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549969596] [2020-07-21 15:39:42,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 15:39:42,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:42,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 15:39:42,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:42,146 INFO L87 Difference]: Start difference. First operand 282 states and 335 transitions. Second operand 3 states. [2020-07-21 15:39:42,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:42,185 INFO L93 Difference]: Finished difference Result 774 states and 985 transitions. [2020-07-21 15:39:42,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 15:39:42,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-07-21 15:39:42,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:42,193 INFO L225 Difference]: With dead ends: 774 [2020-07-21 15:39:42,193 INFO L226 Difference]: Without dead ends: 516 [2020-07-21 15:39:42,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 15:39:42,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-07-21 15:39:42,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 513. [2020-07-21 15:39:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-07-21 15:39:42,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 638 transitions. [2020-07-21 15:39:42,247 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 638 transitions. Word has length 75 [2020-07-21 15:39:42,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:42,248 INFO L479 AbstractCegarLoop]: Abstraction has 513 states and 638 transitions. [2020-07-21 15:39:42,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 15:39:42,249 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 638 transitions. [2020-07-21 15:39:42,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 15:39:42,253 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:42,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:42,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:42,467 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:42,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:42,468 INFO L82 PathProgramCache]: Analyzing trace with hash 357740200, now seen corresponding path program 1 times [2020-07-21 15:39:42,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:42,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413216012] [2020-07-21 15:39:42,470 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:42,727 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:42,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:42,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 15:39:42,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:42,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:42,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:42,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413216012] [2020-07-21 15:39:42,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:42,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:42,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433993403] [2020-07-21 15:39:42,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:42,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:42,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:42,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:42,785 INFO L87 Difference]: Start difference. First operand 513 states and 638 transitions. Second operand 6 states. [2020-07-21 15:39:43,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:43,714 INFO L93 Difference]: Finished difference Result 1724 states and 2329 transitions. [2020-07-21 15:39:43,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 15:39:43,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-07-21 15:39:43,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:43,727 INFO L225 Difference]: With dead ends: 1724 [2020-07-21 15:39:43,730 INFO L226 Difference]: Without dead ends: 1235 [2020-07-21 15:39:43,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-21 15:39:43,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2020-07-21 15:39:43,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1125. [2020-07-21 15:39:43,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2020-07-21 15:39:43,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1459 transitions. [2020-07-21 15:39:43,834 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1459 transitions. Word has length 79 [2020-07-21 15:39:43,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:43,834 INFO L479 AbstractCegarLoop]: Abstraction has 1125 states and 1459 transitions. [2020-07-21 15:39:43,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:43,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1459 transitions. [2020-07-21 15:39:43,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-07-21 15:39:43,836 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:43,837 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] [2020-07-21 15:39:44,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:44,051 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:44,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:44,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1330285310, now seen corresponding path program 1 times [2020-07-21 15:39:44,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:44,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873189679] [2020-07-21 15:39:44,054 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:44,307 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:44,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:44,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 15:39:44,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:44,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:44,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:44,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873189679] [2020-07-21 15:39:44,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:44,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:44,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124704425] [2020-07-21 15:39:44,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:44,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:44,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:44,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:44,356 INFO L87 Difference]: Start difference. First operand 1125 states and 1459 transitions. Second operand 6 states. [2020-07-21 15:39:44,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:44,622 INFO L93 Difference]: Finished difference Result 3252 states and 4423 transitions. [2020-07-21 15:39:44,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 15:39:44,623 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-07-21 15:39:44,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:44,638 INFO L225 Difference]: With dead ends: 3252 [2020-07-21 15:39:44,638 INFO L226 Difference]: Without dead ends: 2151 [2020-07-21 15:39:44,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-21 15:39:44,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2020-07-21 15:39:44,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 2115. [2020-07-21 15:39:44,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2115 states. [2020-07-21 15:39:44,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 2756 transitions. [2020-07-21 15:39:44,834 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 2756 transitions. Word has length 75 [2020-07-21 15:39:44,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:44,835 INFO L479 AbstractCegarLoop]: Abstraction has 2115 states and 2756 transitions. [2020-07-21 15:39:44,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:44,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 2756 transitions. [2020-07-21 15:39:44,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 15:39:44,842 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:44,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:45,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:45,058 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:45,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:45,059 INFO L82 PathProgramCache]: Analyzing trace with hash -2136122490, now seen corresponding path program 1 times [2020-07-21 15:39:45,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:45,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096257452] [2020-07-21 15:39:45,060 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:45,347 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:45,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:45,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 15:39:45,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:45,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:45,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:45,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096257452] [2020-07-21 15:39:45,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:45,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 15:39:45,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489528883] [2020-07-21 15:39:45,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:39:45,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:45,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:39:45,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:39:45,394 INFO L87 Difference]: Start difference. First operand 2115 states and 2756 transitions. Second operand 6 states. [2020-07-21 15:39:45,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:45,511 INFO L93 Difference]: Finished difference Result 4246 states and 5628 transitions. [2020-07-21 15:39:45,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:39:45,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-07-21 15:39:45,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:45,528 INFO L225 Difference]: With dead ends: 4246 [2020-07-21 15:39:45,528 INFO L226 Difference]: Without dead ends: 2155 [2020-07-21 15:39:45,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 15:39:45,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2020-07-21 15:39:45,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2155. [2020-07-21 15:39:45,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2155 states. [2020-07-21 15:39:45,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2155 states to 2155 states and 2804 transitions. [2020-07-21 15:39:45,664 INFO L78 Accepts]: Start accepts. Automaton has 2155 states and 2804 transitions. Word has length 79 [2020-07-21 15:39:45,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:45,665 INFO L479 AbstractCegarLoop]: Abstraction has 2155 states and 2804 transitions. [2020-07-21 15:39:45,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:39:45,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2155 states and 2804 transitions. [2020-07-21 15:39:45,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 15:39:45,670 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:45,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:39:45,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:45,886 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:45,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:45,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1649371716, now seen corresponding path program 1 times [2020-07-21 15:39:45,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:45,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660458131] [2020-07-21 15:39:45,887 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:46,071 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:39:46,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:39:46,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 15:39:46,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:39:46,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 15:39:46,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:39:46,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660458131] [2020-07-21 15:39:46,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:39:46,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 15:39:46,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400891570] [2020-07-21 15:39:46,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 15:39:46,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:39:46,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 15:39:46,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:39:46,141 INFO L87 Difference]: Start difference. First operand 2155 states and 2804 transitions. Second operand 5 states. [2020-07-21 15:39:46,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:39:46,233 INFO L93 Difference]: Finished difference Result 4038 states and 5384 transitions. [2020-07-21 15:39:46,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 15:39:46,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-07-21 15:39:46,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:39:46,253 INFO L225 Difference]: With dead ends: 4038 [2020-07-21 15:39:46,254 INFO L226 Difference]: Without dead ends: 1907 [2020-07-21 15:39:46,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:39:46,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2020-07-21 15:39:46,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1907. [2020-07-21 15:39:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1907 states. [2020-07-21 15:39:46,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1907 states to 1907 states and 2428 transitions. [2020-07-21 15:39:46,383 INFO L78 Accepts]: Start accepts. Automaton has 1907 states and 2428 transitions. Word has length 79 [2020-07-21 15:39:46,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:39:46,384 INFO L479 AbstractCegarLoop]: Abstraction has 1907 states and 2428 transitions. [2020-07-21 15:39:46,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 15:39:46,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1907 states and 2428 transitions. [2020-07-21 15:39:46,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-21 15:39:46,386 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:39:46,387 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] [2020-07-21 15:39:46,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:46,601 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:39:46,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:39:46,601 INFO L82 PathProgramCache]: Analyzing trace with hash -453271351, now seen corresponding path program 1 times [2020-07-21 15:39:46,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:39:46,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288108859] [2020-07-21 15:39:46,602 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:46,880 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:39:46,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 15:39:46,880 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:39:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 15:39:47,018 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 15:39:47,260 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 15:39:47,260 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 15:39:47,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:39:47,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:39:47 BoogieIcfgContainer [2020-07-21 15:39:47,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 15:39:47,645 INFO L168 Benchmark]: Toolchain (without parser) took 11346.56 ms. Allocated memory was 136.3 MB in the beginning and 356.5 MB in the end (delta: 220.2 MB). Free memory was 98.4 MB in the beginning and 133.9 MB in the end (delta: -35.5 MB). Peak memory consumption was 184.7 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:47,646 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 136.3 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. [2020-07-21 15:39:47,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 694.07 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 98.0 MB in the beginning and 168.7 MB in the end (delta: -70.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:47,647 INFO L168 Benchmark]: Boogie Preprocessor took 91.87 ms. Allocated memory is still 200.3 MB. Free memory was 168.7 MB in the beginning and 164.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:47,648 INFO L168 Benchmark]: RCFGBuilder took 1173.30 ms. Allocated memory was 200.3 MB in the beginning and 229.6 MB in the end (delta: 29.4 MB). Free memory was 164.6 MB in the beginning and 196.2 MB in the end (delta: -31.6 MB). Peak memory consumption was 88.0 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:47,649 INFO L168 Benchmark]: TraceAbstraction took 9381.61 ms. Allocated memory was 229.6 MB in the beginning and 356.5 MB in the end (delta: 126.9 MB). Free memory was 196.2 MB in the beginning and 133.9 MB in the end (delta: 62.3 MB). Peak memory consumption was 189.2 MB. Max. memory is 7.1 GB. [2020-07-21 15:39:47,652 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 136.3 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 694.07 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 98.0 MB in the beginning and 168.7 MB in the end (delta: -70.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.87 ms. Allocated memory is still 200.3 MB. Free memory was 168.7 MB in the beginning and 164.6 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1173.30 ms. Allocated memory was 200.3 MB in the beginning and 229.6 MB in the end (delta: 29.4 MB). Free memory was 164.6 MB in the beginning and 196.2 MB in the end (delta: -31.6 MB). Peak memory consumption was 88.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9381.61 ms. Allocated memory was 229.6 MB in the beginning and 356.5 MB in the end (delta: 126.9 MB). Free memory was 196.2 MB in the beginning and 133.9 MB in the end (delta: 62.3 MB). Peak memory consumption was 189.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L60] int pumpRunning = 0; [L61] int systemActive = 1; [L239] int waterLevel = 1; [L240] int methaneLevelCritical = 0; [L610] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L833] int cleanupTimeShifts = 4; VAL [\old(cleanupTimeShifts)=53, \old(head)=59, \old(head)=95, \old(methaneLevelCritical)=65, \old(pumpRunning)=27, \old(systemActive)=91, \old(waterLevel)=96, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L906] int retValue_acc ; [L907] 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] [L911] 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] [L912] 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] [L913] 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] [L432] int retValue_acc ; [L435] retValue_acc = 1 [L436] 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] [L913] 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] [L913] tmp = valid_product() [L915] 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] [L917] 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] [L918] 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] [L900] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L335] int splverifierCounter ; [L336] int tmp ; [L337] int tmp___0 ; [L338] int tmp___1 ; [L339] int tmp___2 ; [L342] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L344] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L346] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L352] tmp = __VERIFIER_nondet_int() [L354] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L356] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L257] COND TRUE waterLevel < 2 [L258] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L356] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L362] tmp___0 = __VERIFIER_nondet_int() [L364] COND 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] [L366] 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] [L269] COND FALSE !(\read(methaneLevelCritical)) [L272] 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] [L366] 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] [L372] tmp___2 = __VERIFIER_nondet_int() [L374] COND FALSE !(\read(tmp___2)) [L380] tmp___1 = __VERIFIER_nondet_int() [L382] COND FALSE !(\read(tmp___1)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L391] 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] [L68] 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] [L75] 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] [L77] 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] [L97] 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] [L100] 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] [L102] 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] [L194] int retValue_acc ; [L195] int tmp ; [L196] 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] [L200] 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] [L319] 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] [L322] COND FALSE !(waterLevel < 2) [L326] retValue_acc = 0 [L327] 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] [L200] 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] [L200] tmp = isHighWaterSensorDry() [L202] COND FALSE !(\read(tmp)) [L205] 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] [L207] retValue_acc = tmp___0 [L208] 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] [L102] 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] [L102] tmp = isHighWaterLevel() [L104] 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] [L106] 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] [L125] 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] [L106] 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] [L77] 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] [L83] 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] [L808] int tmp ; [L809] 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] [L813] 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] [L278] int retValue_acc ; [L281] retValue_acc = methaneLevelCritical [L282] 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] [L813] 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] [L813] tmp = isMethaneLevelCritical() [L815] 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] [L817] 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] [L149] int retValue_acc ; [L152] retValue_acc = pumpRunning [L153] 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] [L817] 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] [L817] tmp___0 = isPumpRunning() [L819] 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] [L821] 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] [L44] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.1s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1400 SDtfs, 628 SDslu, 2484 SDs, 0 SdLazy, 671 SolverSat, 185 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 662 GetRequests, 627 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2155occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 175 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 747 NumberOfCodeBlocks, 671 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 654 ConstructedInterpolants, 0 QuantifiedInterpolants, 76250 SizeOfPredicates, 25 NumberOfNonLiveVariables, 6767 ConjunctsInSsa, 93 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...