./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b28893eeb4e8958df7bf6ff738f75538c209345459f7fc3e6dda93763604868d --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:00:04,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:00:04,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:00:04,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:00:04,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:00:04,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:00:04,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:00:04,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:00:04,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:00:04,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:00:04,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:00:04,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:00:04,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:00:04,115 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:00:04,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:00:04,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:00:04,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:00:04,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:00:04,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:00:04,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:00:04,121 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:00:04,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:00:04,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:00:04,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:00:04,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:00:04,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:00:04,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:00:04,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:00:04,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:00:04,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:00:04,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:00:04,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:00:04,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:00:04,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:00:04,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:00:04,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:00:04,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:00:04,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:00:04,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:00:04,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:00:04,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:00:04,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:00:04,151 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:00:04,166 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:00:04,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:00:04,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:00:04,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:00:04,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:00:04,172 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:00:04,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:00:04,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:00:04,172 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:00:04,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:00:04,173 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:00:04,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:00:04,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:00:04,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:00:04,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:00:04,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:00:04,174 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:00:04,174 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:00:04,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:00:04,175 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:00:04,175 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:00:04,175 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:00:04,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:00:04,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:00:04,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:00:04,176 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:00:04,176 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:00:04,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:00:04,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:00:04,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:00:04,177 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:00:04,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:00:04,177 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:00:04,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b28893eeb4e8958df7bf6ff738f75538c209345459f7fc3e6dda93763604868d [2022-07-13 18:00:04,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:00:04,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:00:04,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:00:04,413 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:00:04,413 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:00:04,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2022-07-13 18:00:04,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f453f59/d7c2cba7f0f143d0b0477d887adb6309/FLAGe68089667 [2022-07-13 18:00:05,045 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:00:05,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2022-07-13 18:00:05,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f453f59/d7c2cba7f0f143d0b0477d887adb6309/FLAGe68089667 [2022-07-13 18:00:05,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f453f59/d7c2cba7f0f143d0b0477d887adb6309 [2022-07-13 18:00:05,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:00:05,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:00:05,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:00:05,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:00:05,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:00:05,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:00:05" (1/1) ... [2022-07-13 18:00:05,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@414210b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:05, skipping insertion in model container [2022-07-13 18:00:05,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:00:05" (1/1) ... [2022-07-13 18:00:05,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:00:05,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:00:05,945 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c[13010,13023] [2022-07-13 18:00:06,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:00:06,031 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:00:06,075 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c[13010,13023] [2022-07-13 18:00:06,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:00:06,172 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:00:06,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:06 WrapperNode [2022-07-13 18:00:06,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:00:06,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:00:06,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:00:06,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:00:06,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:06" (1/1) ... [2022-07-13 18:00:06,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:06" (1/1) ... [2022-07-13 18:00:06,265 INFO L137 Inliner]: procedures = 55, calls = 156, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 262 [2022-07-13 18:00:06,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:00:06,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:00:06,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:00:06,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:00:06,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:06" (1/1) ... [2022-07-13 18:00:06,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:06" (1/1) ... [2022-07-13 18:00:06,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:06" (1/1) ... [2022-07-13 18:00:06,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:06" (1/1) ... [2022-07-13 18:00:06,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:06" (1/1) ... [2022-07-13 18:00:06,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:06" (1/1) ... [2022-07-13 18:00:06,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:06" (1/1) ... [2022-07-13 18:00:06,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:00:06,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:00:06,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:00:06,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:00:06,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:06" (1/1) ... [2022-07-13 18:00:06,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:00:06,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:00:06,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 18:00:06,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 18:00:06,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:00:06,386 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-07-13 18:00:06,397 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-07-13 18:00:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-13 18:00:06,397 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-13 18:00:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-13 18:00:06,397 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-13 18:00:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-07-13 18:00:06,398 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-07-13 18:00:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-07-13 18:00:06,398 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-07-13 18:00:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-07-13 18:00:06,398 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-07-13 18:00:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:00:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-07-13 18:00:06,398 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-07-13 18:00:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:00:06,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:00:06,473 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:00:06,480 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:00:06,981 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:00:06,986 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:00:06,986 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 18:00:06,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:00:06 BoogieIcfgContainer [2022-07-13 18:00:06,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:00:06,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:00:06,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:00:06,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:00:06,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:00:05" (1/3) ... [2022-07-13 18:00:06,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183d1254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:00:06, skipping insertion in model container [2022-07-13 18:00:07,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:00:06" (2/3) ... [2022-07-13 18:00:07,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183d1254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:00:07, skipping insertion in model container [2022-07-13 18:00:07,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:00:06" (3/3) ... [2022-07-13 18:00:07,014 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2022-07-13 18:00:07,034 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:00:07,046 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:00:07,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:00:07,161 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@76ed7189, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@73d962e [2022-07-13 18:00:07,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:00:07,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 68 states have (on average 1.3823529411764706) internal successors, (94), 76 states have internal predecessors, (94), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-13 18:00:07,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 18:00:07,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:07,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:00:07,184 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:07,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:07,203 INFO L85 PathProgramCache]: Analyzing trace with hash 584169344, now seen corresponding path program 1 times [2022-07-13 18:00:07,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:07,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130606989] [2022-07-13 18:00:07,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:07,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:07,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:07,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:07,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130606989] [2022-07-13 18:00:07,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130606989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:07,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:07,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 18:00:07,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735160213] [2022-07-13 18:00:07,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:07,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 18:00:07,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:07,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 18:00:07,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 18:00:07,616 INFO L87 Difference]: Start difference. First operand has 89 states, 68 states have (on average 1.3823529411764706) internal successors, (94), 76 states have internal predecessors, (94), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:00:07,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:07,666 INFO L93 Difference]: Finished difference Result 170 states and 231 transitions. [2022-07-13 18:00:07,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 18:00:07,672 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-13 18:00:07,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:07,695 INFO L225 Difference]: With dead ends: 170 [2022-07-13 18:00:07,696 INFO L226 Difference]: Without dead ends: 80 [2022-07-13 18:00:07,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 18:00:07,706 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:07,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:00:07,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-07-13 18:00:07,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-07-13 18:00:07,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 61 states have (on average 1.3114754098360655) internal successors, (80), 68 states have internal predecessors, (80), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-13 18:00:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 103 transitions. [2022-07-13 18:00:07,774 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 103 transitions. Word has length 19 [2022-07-13 18:00:07,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:07,775 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 103 transitions. [2022-07-13 18:00:07,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:00:07,776 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 103 transitions. [2022-07-13 18:00:07,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-13 18:00:07,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:07,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:00:07,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:00:07,780 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:07,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:07,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1835019573, now seen corresponding path program 1 times [2022-07-13 18:00:07,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:07,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144380413] [2022-07-13 18:00:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:07,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:07,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:07,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144380413] [2022-07-13 18:00:07,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144380413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:07,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:07,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:00:07,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072239504] [2022-07-13 18:00:07,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:07,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:00:07,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:07,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:00:07,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:00:07,951 INFO L87 Difference]: Start difference. First operand 80 states and 103 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:00:07,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:07,970 INFO L93 Difference]: Finished difference Result 125 states and 161 transitions. [2022-07-13 18:00:07,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:00:07,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-13 18:00:07,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:07,976 INFO L225 Difference]: With dead ends: 125 [2022-07-13 18:00:07,977 INFO L226 Difference]: Without dead ends: 71 [2022-07-13 18:00:07,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:00:07,987 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 13 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:07,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 163 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:00:07,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-07-13 18:00:08,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-07-13 18:00:08,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 62 states have internal predecessors, (73), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-13 18:00:08,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2022-07-13 18:00:08,011 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 91 transitions. Word has length 20 [2022-07-13 18:00:08,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:08,012 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 91 transitions. [2022-07-13 18:00:08,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:00:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 91 transitions. [2022-07-13 18:00:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-13 18:00:08,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:08,013 INFO L195 NwaCegarLoop]: 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] [2022-07-13 18:00:08,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:00:08,013 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:08,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:08,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1513934599, now seen corresponding path program 1 times [2022-07-13 18:00:08,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:08,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453219851] [2022-07-13 18:00:08,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:08,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:08,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:08,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453219851] [2022-07-13 18:00:08,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453219851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:08,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:08,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:00:08,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702917983] [2022-07-13 18:00:08,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:08,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:00:08,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:08,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:00:08,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:00:08,197 INFO L87 Difference]: Start difference. First operand 71 states and 91 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:00:08,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:08,279 INFO L93 Difference]: Finished difference Result 135 states and 176 transitions. [2022-07-13 18:00:08,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:00:08,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-07-13 18:00:08,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:08,291 INFO L225 Difference]: With dead ends: 135 [2022-07-13 18:00:08,291 INFO L226 Difference]: Without dead ends: 71 [2022-07-13 18:00:08,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:00:08,298 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 116 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:08,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 220 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:00:08,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-07-13 18:00:08,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-07-13 18:00:08,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.309090909090909) internal successors, (72), 62 states have internal predecessors, (72), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-13 18:00:08,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 90 transitions. [2022-07-13 18:00:08,328 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 90 transitions. Word has length 25 [2022-07-13 18:00:08,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:08,328 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 90 transitions. [2022-07-13 18:00:08,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:00:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 90 transitions. [2022-07-13 18:00:08,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 18:00:08,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:08,334 INFO L195 NwaCegarLoop]: 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] [2022-07-13 18:00:08,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:00:08,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:08,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:08,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1198945482, now seen corresponding path program 1 times [2022-07-13 18:00:08,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:08,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756613815] [2022-07-13 18:00:08,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:08,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:08,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:00:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:08,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:00:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:08,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:08,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:08,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756613815] [2022-07-13 18:00:08,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756613815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:08,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:08,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:00:08,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106162569] [2022-07-13 18:00:08,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:08,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:00:08,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:08,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:00:08,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:00:08,479 INFO L87 Difference]: Start difference. First operand 71 states and 90 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 18:00:08,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:08,700 INFO L93 Difference]: Finished difference Result 203 states and 256 transitions. [2022-07-13 18:00:08,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:00:08,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2022-07-13 18:00:08,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:08,704 INFO L225 Difference]: With dead ends: 203 [2022-07-13 18:00:08,704 INFO L226 Difference]: Without dead ends: 139 [2022-07-13 18:00:08,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:00:08,711 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 161 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:08,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 251 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:00:08,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-07-13 18:00:08,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 133. [2022-07-13 18:00:08,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 105 states have (on average 1.2571428571428571) internal successors, (132), 113 states have internal predecessors, (132), 12 states have call successors, (12), 12 states have call predecessors, (12), 15 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) [2022-07-13 18:00:08,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 161 transitions. [2022-07-13 18:00:08,753 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 161 transitions. Word has length 35 [2022-07-13 18:00:08,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:08,753 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 161 transitions. [2022-07-13 18:00:08,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 18:00:08,753 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 161 transitions. [2022-07-13 18:00:08,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 18:00:08,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:08,756 INFO L195 NwaCegarLoop]: 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] [2022-07-13 18:00:08,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:00:08,756 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:08,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:08,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1491563694, now seen corresponding path program 1 times [2022-07-13 18:00:08,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:08,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456644339] [2022-07-13 18:00:08,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:08,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:08,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:00:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:08,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 18:00:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:08,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:08,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:08,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456644339] [2022-07-13 18:00:08,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456644339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:08,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:08,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:00:08,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905030481] [2022-07-13 18:00:08,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:08,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:00:08,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:08,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:00:08,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:00:08,946 INFO L87 Difference]: Start difference. First operand 133 states and 161 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 18:00:09,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:09,179 INFO L93 Difference]: Finished difference Result 340 states and 431 transitions. [2022-07-13 18:00:09,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:00:09,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-07-13 18:00:09,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:09,188 INFO L225 Difference]: With dead ends: 340 [2022-07-13 18:00:09,188 INFO L226 Difference]: Without dead ends: 214 [2022-07-13 18:00:09,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:00:09,190 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 135 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:09,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 283 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:00:09,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-07-13 18:00:09,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2022-07-13 18:00:09,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 167 states have (on average 1.2455089820359282) internal successors, (208), 178 states have internal predecessors, (208), 21 states have call successors, (21), 21 states have call predecessors, (21), 23 states have return successors, (31), 21 states have call predecessors, (31), 21 states have call successors, (31) [2022-07-13 18:00:09,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 260 transitions. [2022-07-13 18:00:09,230 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 260 transitions. Word has length 41 [2022-07-13 18:00:09,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:09,230 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 260 transitions. [2022-07-13 18:00:09,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 18:00:09,231 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 260 transitions. [2022-07-13 18:00:09,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 18:00:09,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:09,233 INFO L195 NwaCegarLoop]: 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] [2022-07-13 18:00:09,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:00:09,233 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:09,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:09,234 INFO L85 PathProgramCache]: Analyzing trace with hash -155876344, now seen corresponding path program 1 times [2022-07-13 18:00:09,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:09,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117416921] [2022-07-13 18:00:09,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:09,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:09,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 18:00:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:09,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 18:00:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:09,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 18:00:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:09,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:09,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:09,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117416921] [2022-07-13 18:00:09,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117416921] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:09,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:09,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:00:09,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572150973] [2022-07-13 18:00:09,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:09,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:00:09,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:09,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:00:09,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:00:09,389 INFO L87 Difference]: Start difference. First operand 212 states and 260 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-13 18:00:09,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:09,772 INFO L93 Difference]: Finished difference Result 266 states and 322 transitions. [2022-07-13 18:00:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 18:00:09,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-07-13 18:00:09,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:09,775 INFO L225 Difference]: With dead ends: 266 [2022-07-13 18:00:09,776 INFO L226 Difference]: Without dead ends: 264 [2022-07-13 18:00:09,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-07-13 18:00:09,791 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 194 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:09,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 377 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:00:09,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-07-13 18:00:09,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 242. [2022-07-13 18:00:09,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 191 states have (on average 1.225130890052356) internal successors, (234), 206 states have internal predecessors, (234), 23 states have call successors, (23), 21 states have call predecessors, (23), 27 states have return successors, (37), 23 states have call predecessors, (37), 23 states have call successors, (37) [2022-07-13 18:00:09,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 294 transitions. [2022-07-13 18:00:09,815 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 294 transitions. Word has length 45 [2022-07-13 18:00:09,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:09,816 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 294 transitions. [2022-07-13 18:00:09,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-13 18:00:09,816 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 294 transitions. [2022-07-13 18:00:09,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-13 18:00:09,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:09,817 INFO L195 NwaCegarLoop]: 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] [2022-07-13 18:00:09,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:00:09,817 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:09,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:09,818 INFO L85 PathProgramCache]: Analyzing trace with hash 529558201, now seen corresponding path program 1 times [2022-07-13 18:00:09,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:09,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507546425] [2022-07-13 18:00:09,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:09,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:09,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 18:00:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:09,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 18:00:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:09,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 18:00:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:09,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:09,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507546425] [2022-07-13 18:00:09,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507546425] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:09,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:09,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:00:09,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197896027] [2022-07-13 18:00:09,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:09,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:00:09,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:09,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:00:09,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:00:09,951 INFO L87 Difference]: Start difference. First operand 242 states and 294 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 18:00:10,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:10,214 INFO L93 Difference]: Finished difference Result 497 states and 615 transitions. [2022-07-13 18:00:10,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:00:10,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2022-07-13 18:00:10,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:10,230 INFO L225 Difference]: With dead ends: 497 [2022-07-13 18:00:10,230 INFO L226 Difference]: Without dead ends: 262 [2022-07-13 18:00:10,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:00:10,231 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 132 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:10,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 317 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:00:10,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-07-13 18:00:10,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 248. [2022-07-13 18:00:10,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 197 states have (on average 1.218274111675127) internal successors, (240), 212 states have internal predecessors, (240), 23 states have call successors, (23), 21 states have call predecessors, (23), 27 states have return successors, (37), 23 states have call predecessors, (37), 23 states have call successors, (37) [2022-07-13 18:00:10,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 300 transitions. [2022-07-13 18:00:10,251 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 300 transitions. Word has length 51 [2022-07-13 18:00:10,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:10,251 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 300 transitions. [2022-07-13 18:00:10,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 18:00:10,251 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 300 transitions. [2022-07-13 18:00:10,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-13 18:00:10,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:10,253 INFO L195 NwaCegarLoop]: 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] [2022-07-13 18:00:10,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:00:10,253 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:10,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:10,267 INFO L85 PathProgramCache]: Analyzing trace with hash 748412919, now seen corresponding path program 1 times [2022-07-13 18:00:10,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:10,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847534817] [2022-07-13 18:00:10,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:10,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:10,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 18:00:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:10,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 18:00:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:10,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 18:00:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:10,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:10,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847534817] [2022-07-13 18:00:10,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847534817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:10,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:10,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:00:10,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610638871] [2022-07-13 18:00:10,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:10,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:00:10,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:10,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:00:10,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:00:10,399 INFO L87 Difference]: Start difference. First operand 248 states and 300 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 18:00:10,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:10,648 INFO L93 Difference]: Finished difference Result 460 states and 561 transitions. [2022-07-13 18:00:10,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:00:10,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2022-07-13 18:00:10,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:10,651 INFO L225 Difference]: With dead ends: 460 [2022-07-13 18:00:10,651 INFO L226 Difference]: Without dead ends: 219 [2022-07-13 18:00:10,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:00:10,667 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 173 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:10,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 297 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:00:10,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-07-13 18:00:10,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 181. [2022-07-13 18:00:10,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 143 states have (on average 1.2097902097902098) internal successors, (173), 153 states have internal predecessors, (173), 17 states have call successors, (17), 17 states have call predecessors, (17), 20 states have return successors, (23), 17 states have call predecessors, (23), 17 states have call successors, (23) [2022-07-13 18:00:10,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 213 transitions. [2022-07-13 18:00:10,680 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 213 transitions. Word has length 51 [2022-07-13 18:00:10,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:10,680 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 213 transitions. [2022-07-13 18:00:10,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 18:00:10,681 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 213 transitions. [2022-07-13 18:00:10,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-13 18:00:10,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:10,682 INFO L195 NwaCegarLoop]: 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] [2022-07-13 18:00:10,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:00:10,682 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:10,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:10,682 INFO L85 PathProgramCache]: Analyzing trace with hash 614399413, now seen corresponding path program 1 times [2022-07-13 18:00:10,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:10,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046294037] [2022-07-13 18:00:10,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:10,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:10,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 18:00:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:10,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 18:00:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:10,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 18:00:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:10,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:10,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046294037] [2022-07-13 18:00:10,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046294037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:00:10,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:00:10,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:00:10,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861417472] [2022-07-13 18:00:10,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:00:10,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:00:10,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:10,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:00:10,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:00:10,799 INFO L87 Difference]: Start difference. First operand 181 states and 213 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 18:00:11,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:11,549 INFO L93 Difference]: Finished difference Result 400 states and 502 transitions. [2022-07-13 18:00:11,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 18:00:11,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2022-07-13 18:00:11,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:11,551 INFO L225 Difference]: With dead ends: 400 [2022-07-13 18:00:11,552 INFO L226 Difference]: Without dead ends: 267 [2022-07-13 18:00:11,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-13 18:00:11,553 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 187 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:11,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 417 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 18:00:11,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-13 18:00:11,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2022-07-13 18:00:11,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 209 states have (on average 1.2057416267942584) internal successors, (252), 223 states have internal predecessors, (252), 27 states have call successors, (27), 25 states have call predecessors, (27), 28 states have return successors, (44), 27 states have call predecessors, (44), 27 states have call successors, (44) [2022-07-13 18:00:11,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 323 transitions. [2022-07-13 18:00:11,566 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 323 transitions. Word has length 51 [2022-07-13 18:00:11,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:11,567 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 323 transitions. [2022-07-13 18:00:11,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 18:00:11,567 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 323 transitions. [2022-07-13 18:00:11,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-13 18:00:11,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:11,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:00:11,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:00:11,569 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:11,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:11,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1413668976, now seen corresponding path program 1 times [2022-07-13 18:00:11,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:11,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826300676] [2022-07-13 18:00:11,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:11,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:11,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 18:00:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:11,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 18:00:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:11,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:00:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:11,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 18:00:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:11,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 18:00:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:11,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 18:00:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:11,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 18:00:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:11,666 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 18:00:11,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:00:11,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826300676] [2022-07-13 18:00:11,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826300676] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:00:11,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818203242] [2022-07-13 18:00:11,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:11,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:00:11,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:00:11,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:00:11,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 18:00:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:00:11,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 18:00:11,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:00:12,254 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:00:12,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:00:12,454 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 18:00:12,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818203242] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:00:12,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:00:12,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 9 [2022-07-13 18:00:12,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407970142] [2022-07-13 18:00:12,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:00:12,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:00:12,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:00:12,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:00:12,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:00:12,469 INFO L87 Difference]: Start difference. First operand 265 states and 323 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 18:00:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:00:13,085 INFO L93 Difference]: Finished difference Result 612 states and 781 transitions. [2022-07-13 18:00:13,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 18:00:13,086 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 88 [2022-07-13 18:00:13,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:00:13,088 INFO L225 Difference]: With dead ends: 612 [2022-07-13 18:00:13,089 INFO L226 Difference]: Without dead ends: 395 [2022-07-13 18:00:13,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 190 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2022-07-13 18:00:13,105 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 315 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:00:13,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 488 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 18:00:13,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-07-13 18:00:13,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 362. [2022-07-13 18:00:13,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 283 states have (on average 1.204946996466431) internal successors, (341), 302 states have internal predecessors, (341), 38 states have call successors, (38), 36 states have call predecessors, (38), 40 states have return successors, (65), 36 states have call predecessors, (65), 38 states have call successors, (65) [2022-07-13 18:00:13,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 444 transitions. [2022-07-13 18:00:13,143 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 444 transitions. Word has length 88 [2022-07-13 18:00:13,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:00:13,144 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 444 transitions. [2022-07-13 18:00:13,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 18:00:13,144 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 444 transitions. [2022-07-13 18:00:13,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-13 18:00:13,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:00:13,146 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:00:13,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 18:00:13,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 18:00:13,363 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:00:13,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:00:13,364 INFO L85 PathProgramCache]: Analyzing trace with hash -952395115, now seen corresponding path program 2 times [2022-07-13 18:00:13,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:00:13,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893745896] [2022-07-13 18:00:13,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:00:13,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:00:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 18:00:13,401 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 18:00:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 18:00:13,497 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 18:00:13,497 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 18:00:13,498 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 18:00:13,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:00:13,509 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:00:13,528 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 18:00:13,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 06:00:13 BoogieIcfgContainer [2022-07-13 18:00:13,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 18:00:13,639 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 18:00:13,639 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 18:00:13,639 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 18:00:13,640 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:00:06" (3/4) ... [2022-07-13 18:00:13,641 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-13 18:00:13,769 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 18:00:13,770 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 18:00:13,770 INFO L158 Benchmark]: Toolchain (without parser) took 8267.18ms. Allocated memory was 92.3MB in the beginning and 157.3MB in the end (delta: 65.0MB). Free memory was 58.2MB in the beginning and 88.0MB in the end (delta: -29.8MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2022-07-13 18:00:13,770 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 38.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 18:00:13,771 INFO L158 Benchmark]: CACSL2BoogieTranslator took 663.69ms. Allocated memory was 92.3MB in the beginning and 115.3MB in the end (delta: 23.1MB). Free memory was 58.1MB in the beginning and 82.8MB in the end (delta: -24.7MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2022-07-13 18:00:13,771 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.24ms. Allocated memory is still 115.3MB. Free memory was 82.8MB in the beginning and 80.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 18:00:13,787 INFO L158 Benchmark]: Boogie Preprocessor took 51.94ms. Allocated memory is still 115.3MB. Free memory was 80.3MB in the beginning and 78.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 18:00:13,788 INFO L158 Benchmark]: RCFGBuilder took 674.25ms. Allocated memory is still 115.3MB. Free memory was 78.9MB in the beginning and 91.3MB in the end (delta: -12.5MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2022-07-13 18:00:13,789 INFO L158 Benchmark]: TraceAbstraction took 6644.11ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 90.8MB in the beginning and 97.4MB in the end (delta: -6.6MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. [2022-07-13 18:00:13,789 INFO L158 Benchmark]: Witness Printer took 130.50ms. Allocated memory is still 157.3MB. Free memory was 97.4MB in the beginning and 88.0MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 18:00:13,790 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 38.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 663.69ms. Allocated memory was 92.3MB in the beginning and 115.3MB in the end (delta: 23.1MB). Free memory was 58.1MB in the beginning and 82.8MB in the end (delta: -24.7MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.24ms. Allocated memory is still 115.3MB. Free memory was 82.8MB in the beginning and 80.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.94ms. Allocated memory is still 115.3MB. Free memory was 80.3MB in the beginning and 78.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 674.25ms. Allocated memory is still 115.3MB. Free memory was 78.9MB in the beginning and 91.3MB in the end (delta: -12.5MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6644.11ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 90.8MB in the beginning and 97.4MB in the end (delta: -6.6MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. * Witness Printer took 130.50ms. Allocated memory is still 157.3MB. Free memory was 97.4MB in the beginning and 88.0MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 553]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L352] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L565] int pumpRunning = 0; [L566] int systemActive = 1; [L768] int waterLevel = 1; [L769] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L131] int retValue_acc ; [L132] int tmp ; [L136] FCALL select_helpers() [L137] FCALL select_features() [L138] CALL, EXPR valid_product() [L955] int retValue_acc ; [L958] retValue_acc = 1 [L959] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L138] RET, EXPR valid_product() [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L142] FCALL setup() [L143] CALL runTest() [L122] CALL test() [L863] int splverifierCounter ; [L864] int tmp ; [L865] int tmp___0 ; [L866] int tmp___1 ; [L867] int tmp___2 ; [L870] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L872] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L874] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L880] tmp = __VERIFIER_nondet_int() [L882] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L884] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L786] COND TRUE waterLevel < 2 [L787] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L884] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L890] tmp___0 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L900] tmp___2 = __VERIFIER_nondet_int() [L902] COND TRUE \read(tmp___2) [L904] CALL startSystem() [L763] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L904] RET startSystem() [L917] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L572] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L579] COND TRUE \read(systemActive) [L581] CALL processEnvironment() [L627] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L630] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L645] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L601] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L604] COND TRUE ! pumpRunning [L606] CALL, EXPR isHighWaterLevel() [L741] int retValue_acc ; [L742] int tmp ; [L743] int tmp___0 ; [L747] CALL, EXPR isHighWaterSensorDry() [L848] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L851] COND FALSE !(waterLevel < 2) [L855] retValue_acc = 0 [L856] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L747] RET, EXPR isHighWaterSensorDry() [L747] tmp = isHighWaterSensorDry() [L749] COND FALSE !(\read(tmp)) [L752] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L754] retValue_acc = tmp___0 [L755] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L606] RET, EXPR isHighWaterLevel() [L606] tmp = isHighWaterLevel() [L608] COND TRUE \read(tmp) [L610] CALL activatePump() [L660] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L664] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L685] int retValue_acc ; [L689] CALL, EXPR isMethaneLevelCritical() [L807] int retValue_acc ; [L810] retValue_acc = methaneLevelCritical [L811] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L689] RET, EXPR isMethaneLevelCritical() [L689] retValue_acc = isMethaneLevelCritical() [L691] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L664] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L664] tmp = isMethaneAlarm() [L666] COND FALSE !(\read(tmp)) [L670] CALL activatePump__wrappee__highWaterSensor() [L655] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L670] RET activatePump__wrappee__highWaterSensor() [L610] RET activatePump() [L645] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L581] RET processEnvironment() [L587] CALL __utac_acc__Specification4_spec__1() [L158] int tmp ; [L159] int tmp___0 ; [L163] CALL, EXPR getWaterLevel() [L839] int retValue_acc ; [L842] retValue_acc = waterLevel [L843] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L163] RET, EXPR getWaterLevel() [L163] tmp = getWaterLevel() [L165] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L587] RET __utac_acc__Specification4_spec__1() [L917] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L872] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L874] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L880] tmp = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L890] tmp___0 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L900] tmp___2 = __VERIFIER_nondet_int() [L902] COND TRUE \read(tmp___2) [L904] CALL startSystem() [L763] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L904] RET startSystem() [L917] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L572] COND TRUE \read(pumpRunning) [L574] CALL lowerWaterLevel() [L774] COND TRUE waterLevel > 0 [L775] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L574] RET lowerWaterLevel() [L579] COND TRUE \read(systemActive) [L581] CALL processEnvironment() [L627] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L630] COND TRUE \read(pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L632] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L685] int retValue_acc ; [L689] CALL, EXPR isMethaneLevelCritical() [L807] int retValue_acc ; [L810] retValue_acc = methaneLevelCritical [L811] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L689] RET, EXPR isMethaneLevelCritical() [L689] retValue_acc = isMethaneLevelCritical() [L691] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L632] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L632] tmp = isMethaneAlarm() [L634] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L640] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L601] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L604] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L619] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L640] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L581] RET processEnvironment() [L587] CALL __utac_acc__Specification4_spec__1() [L158] int tmp ; [L159] int tmp___0 ; [L163] CALL, EXPR getWaterLevel() [L839] int retValue_acc ; [L842] retValue_acc = waterLevel [L843] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L163] RET, EXPR getWaterLevel() [L163] tmp = getWaterLevel() [L165] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L587] RET __utac_acc__Specification4_spec__1() [L917] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L872] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L874] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L880] tmp = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L890] tmp___0 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L900] tmp___2 = __VERIFIER_nondet_int() [L902] COND TRUE \read(tmp___2) [L904] CALL startSystem() [L763] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L904] RET startSystem() [L917] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L572] COND TRUE \read(pumpRunning) [L574] CALL lowerWaterLevel() [L774] COND TRUE waterLevel > 0 [L775] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L574] RET lowerWaterLevel() [L579] COND TRUE \read(systemActive) [L581] CALL processEnvironment() [L627] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L630] COND TRUE \read(pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L632] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L685] int retValue_acc ; [L689] CALL, EXPR isMethaneLevelCritical() [L807] int retValue_acc ; [L810] retValue_acc = methaneLevelCritical [L811] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L689] RET, EXPR isMethaneLevelCritical() [L689] retValue_acc = isMethaneLevelCritical() [L691] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L632] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L632] tmp = isMethaneAlarm() [L634] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L640] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L601] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L604] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L619] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L640] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L581] RET processEnvironment() [L587] CALL __utac_acc__Specification4_spec__1() [L158] int tmp ; [L159] int tmp___0 ; [L163] CALL, EXPR getWaterLevel() [L839] int retValue_acc ; [L842] retValue_acc = waterLevel [L843] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L163] RET, EXPR getWaterLevel() [L163] tmp = getWaterLevel() [L165] COND TRUE tmp == 0 [L167] CALL, EXPR isPumpRunning() [L696] int retValue_acc ; [L699] retValue_acc = pumpRunning [L700] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L167] RET, EXPR isPumpRunning() [L167] tmp___0 = isPumpRunning() [L169] COND TRUE \read(tmp___0) [L171] CALL __automaton_fail() [L553] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.4s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1448 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1426 mSDsluCounter, 2925 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1974 mSDsCounter, 368 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1657 IncrementalHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 368 mSolverCounterUnsat, 951 mSDtfsCounter, 1657 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 345 GetRequests, 247 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=10, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 117 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 639 NumberOfCodeBlocks, 639 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 590 ConstructedInterpolants, 0 QuantifiedInterpolants, 1143 SizeOfPredicates, 4 NumberOfNonLiveVariables, 449 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 52/75 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! [2022-07-13 18:00:13,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE