./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product32.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_spec3_product32.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 cbe5945de1191725858dff519e245e0ce7f71deac0a58ccc85d416ae53ad1824 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 17:59:17,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 17:59:17,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 17:59:17,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 17:59:17,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 17:59:17,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 17:59:17,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 17:59:17,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 17:59:17,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 17:59:17,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 17:59:17,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 17:59:17,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 17:59:17,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 17:59:17,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 17:59:17,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 17:59:17,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 17:59:17,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 17:59:17,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 17:59:17,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 17:59:17,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 17:59:17,752 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 17:59:17,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 17:59:17,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 17:59:17,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 17:59:17,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 17:59:17,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 17:59:17,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 17:59:17,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 17:59:17,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 17:59:17,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 17:59:17,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 17:59:17,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 17:59:17,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 17:59:17,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 17:59:17,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 17:59:17,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 17:59:17,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 17:59:17,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 17:59:17,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 17:59:17,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 17:59:17,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 17:59:17,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 17:59:17,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 17:59:17,813 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 17:59:17,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 17:59:17,814 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 17:59:17,814 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 17:59:17,814 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 17:59:17,815 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 17:59:17,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 17:59:17,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 17:59:17,815 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 17:59:17,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 17:59:17,816 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 17:59:17,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 17:59:17,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 17:59:17,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 17:59:17,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 17:59:17,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 17:59:17,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 17:59:17,817 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 17:59:17,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 17:59:17,818 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 17:59:17,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 17:59:17,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 17:59:17,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 17:59:17,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 17:59:17,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:59:17,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 17:59:17,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 17:59:17,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 17:59:17,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 17:59:17,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 17:59:17,829 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 17:59:17,829 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 17:59:17,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 17:59:17,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbe5945de1191725858dff519e245e0ce7f71deac0a58ccc85d416ae53ad1824 [2022-07-13 17:59:18,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 17:59:18,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 17:59:18,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 17:59:18,031 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 17:59:18,032 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 17:59:18,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product32.cil.c [2022-07-13 17:59:18,078 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0fda63b/1b659b554b4149a6974c4d952041d9b2/FLAG128d3896f [2022-07-13 17:59:18,467 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 17:59:18,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product32.cil.c [2022-07-13 17:59:18,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0fda63b/1b659b554b4149a6974c4d952041d9b2/FLAG128d3896f [2022-07-13 17:59:18,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a0fda63b/1b659b554b4149a6974c4d952041d9b2 [2022-07-13 17:59:18,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 17:59:18,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 17:59:18,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 17:59:18,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 17:59:18,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 17:59:18,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:59:18" (1/1) ... [2022-07-13 17:59:18,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fbe908a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:18, skipping insertion in model container [2022-07-13 17:59:18,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:59:18" (1/1) ... [2022-07-13 17:59:18,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 17:59:18,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 17:59:19,168 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_spec3_product32.cil.c[15274,15287] [2022-07-13 17:59:19,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:59:19,219 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 17:59:19,291 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_spec3_product32.cil.c[15274,15287] [2022-07-13 17:59:19,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:59:19,338 INFO L208 MainTranslator]: Completed translation [2022-07-13 17:59:19,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:19 WrapperNode [2022-07-13 17:59:19,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 17:59:19,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 17:59:19,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 17:59:19,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 17:59:19,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:19" (1/1) ... [2022-07-13 17:59:19,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:19" (1/1) ... [2022-07-13 17:59:19,401 INFO L137 Inliner]: procedures = 56, calls = 159, calls flagged for inlining = 22, calls inlined = 18, statements flattened = 242 [2022-07-13 17:59:19,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 17:59:19,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 17:59:19,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 17:59:19,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 17:59:19,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:19" (1/1) ... [2022-07-13 17:59:19,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:19" (1/1) ... [2022-07-13 17:59:19,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:19" (1/1) ... [2022-07-13 17:59:19,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:19" (1/1) ... [2022-07-13 17:59:19,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:19" (1/1) ... [2022-07-13 17:59:19,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:19" (1/1) ... [2022-07-13 17:59:19,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:19" (1/1) ... [2022-07-13 17:59:19,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 17:59:19,428 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 17:59:19,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 17:59:19,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 17:59:19,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:19" (1/1) ... [2022-07-13 17:59:19,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:59:19,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:59:19,464 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 17:59:19,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 17:59:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-07-13 17:59:19,494 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-07-13 17:59:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-07-13 17:59:19,494 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-07-13 17:59:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-13 17:59:19,494 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-13 17:59:19,494 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-13 17:59:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-13 17:59:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-07-13 17:59:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-07-13 17:59:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-07-13 17:59:19,495 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-07-13 17:59:19,495 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-07-13 17:59:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-07-13 17:59:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-07-13 17:59:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-07-13 17:59:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 17:59:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-07-13 17:59:19,496 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 17:59:19,499 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-07-13 17:59:19,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 17:59:19,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 17:59:19,575 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 17:59:19,576 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 17:59:19,841 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 17:59:19,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 17:59:19,848 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 17:59:19,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:59:19 BoogieIcfgContainer [2022-07-13 17:59:19,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 17:59:19,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 17:59:19,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 17:59:19,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 17:59:19,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 05:59:18" (1/3) ... [2022-07-13 17:59:19,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b94d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:59:19, skipping insertion in model container [2022-07-13 17:59:19,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:59:19" (2/3) ... [2022-07-13 17:59:19,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b94d82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:59:19, skipping insertion in model container [2022-07-13 17:59:19,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:59:19" (3/3) ... [2022-07-13 17:59:19,857 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product32.cil.c [2022-07-13 17:59:19,867 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 17:59:19,867 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 17:59:19,926 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 17:59:19,932 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@7c182178, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4e6df75f [2022-07-13 17:59:19,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 17:59:19,936 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 71 states have (on average 1.3661971830985915) internal successors, (97), 80 states have internal predecessors, (97), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 12 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-13 17:59:19,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-13 17:59:19,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:59:19,946 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 17:59:19,946 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:59:19,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:59:19,951 INFO L85 PathProgramCache]: Analyzing trace with hash -267540016, now seen corresponding path program 1 times [2022-07-13 17:59:19,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:59:19,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634893830] [2022-07-13 17:59:19,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:59:19,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:59:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:20,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 17:59:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:20,159 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 17:59:20,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:59:20,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634893830] [2022-07-13 17:59:20,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634893830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:59:20,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:59:20,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 17:59:20,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003696102] [2022-07-13 17:59:20,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:59:20,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 17:59:20,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:59:20,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 17:59:20,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 17:59:20,201 INFO L87 Difference]: Start difference. First operand has 98 states, 71 states have (on average 1.3661971830985915) internal successors, (97), 80 states have internal predecessors, (97), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 12 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 17:59:20,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:59:20,233 INFO L93 Difference]: Finished difference Result 188 states and 253 transitions. [2022-07-13 17:59:20,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 17:59:20,235 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-07-13 17:59:20,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:59:20,243 INFO L225 Difference]: With dead ends: 188 [2022-07-13 17:59:20,243 INFO L226 Difference]: Without dead ends: 89 [2022-07-13 17:59:20,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 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 17:59:20,249 INFO L413 NwaCegarLoop]: 123 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, 123 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 17:59:20,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:59:20,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-07-13 17:59:20,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-07-13 17:59:20,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 64 states have (on average 1.296875) internal successors, (83), 72 states have internal predecessors, (83), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-13 17:59:20,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 114 transitions. [2022-07-13 17:59:20,289 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 114 transitions. Word has length 25 [2022-07-13 17:59:20,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:59:20,289 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 114 transitions. [2022-07-13 17:59:20,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 17:59:20,290 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 114 transitions. [2022-07-13 17:59:20,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 17:59:20,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:59:20,293 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] [2022-07-13 17:59:20,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 17:59:20,293 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:59:20,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:59:20,294 INFO L85 PathProgramCache]: Analyzing trace with hash -411354841, now seen corresponding path program 1 times [2022-07-13 17:59:20,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:59:20,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147378401] [2022-07-13 17:59:20,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:59:20,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:59:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:20,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:59:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:20,400 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 17:59:20,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:59:20,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147378401] [2022-07-13 17:59:20,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147378401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:59:20,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:59:20,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 17:59:20,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712210864] [2022-07-13 17:59:20,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:59:20,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:59:20,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:59:20,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:59:20,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 17:59:20,407 INFO L87 Difference]: Start difference. First operand 89 states and 114 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 17:59:20,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:59:20,437 INFO L93 Difference]: Finished difference Result 139 states and 177 transitions. [2022-07-13 17:59:20,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:59:20,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-07-13 17:59:20,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:59:20,445 INFO L225 Difference]: With dead ends: 139 [2022-07-13 17:59:20,445 INFO L226 Difference]: Without dead ends: 80 [2022-07-13 17:59:20,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 17:59:20,448 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 17 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 180 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 17:59:20,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 180 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:59:20,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-07-13 17:59:20,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-07-13 17:59:20,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 66 states have internal predecessors, (76), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2022-07-13 17:59:20,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 102 transitions. [2022-07-13 17:59:20,458 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 102 transitions. Word has length 26 [2022-07-13 17:59:20,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:59:20,459 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 102 transitions. [2022-07-13 17:59:20,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 17:59:20,459 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 102 transitions. [2022-07-13 17:59:20,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-13 17:59:20,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:59:20,462 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] [2022-07-13 17:59:20,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 17:59:20,463 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:59:20,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:59:20,463 INFO L85 PathProgramCache]: Analyzing trace with hash -52569705, now seen corresponding path program 1 times [2022-07-13 17:59:20,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:59:20,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583765601] [2022-07-13 17:59:20,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:59:20,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:59:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:20,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 17:59:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:20,585 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 17:59:20,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:59:20,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583765601] [2022-07-13 17:59:20,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583765601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:59:20,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:59:20,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:59:20,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859853557] [2022-07-13 17:59:20,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:59:20,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:59:20,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:59:20,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:59:20,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:59:20,591 INFO L87 Difference]: Start difference. First operand 80 states and 102 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 17:59:20,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:59:20,816 INFO L93 Difference]: Finished difference Result 284 states and 375 transitions. [2022-07-13 17:59:20,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:59:20,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-07-13 17:59:20,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:59:20,822 INFO L225 Difference]: With dead ends: 284 [2022-07-13 17:59:20,822 INFO L226 Difference]: Without dead ends: 211 [2022-07-13 17:59:20,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:59:20,828 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 230 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:59:20,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 527 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 17:59:20,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-07-13 17:59:20,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 189. [2022-07-13 17:59:20,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 136 states have (on average 1.3455882352941178) internal successors, (183), 154 states have internal predecessors, (183), 31 states have call successors, (31), 21 states have call predecessors, (31), 21 states have return successors, (32), 21 states have call predecessors, (32), 31 states have call successors, (32) [2022-07-13 17:59:20,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 246 transitions. [2022-07-13 17:59:20,860 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 246 transitions. Word has length 31 [2022-07-13 17:59:20,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:59:20,861 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 246 transitions. [2022-07-13 17:59:20,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 17:59:20,861 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 246 transitions. [2022-07-13 17:59:20,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-13 17:59:20,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:59:20,863 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] [2022-07-13 17:59:20,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 17:59:20,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:59:20,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:59:20,864 INFO L85 PathProgramCache]: Analyzing trace with hash 488407342, now seen corresponding path program 1 times [2022-07-13 17:59:20,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:59:20,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397197692] [2022-07-13 17:59:20,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:59:20,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:59:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:20,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 17:59:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:20,938 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 17:59:20,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:59:20,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397197692] [2022-07-13 17:59:20,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397197692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:59:20,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:59:20,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 17:59:20,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306779212] [2022-07-13 17:59:20,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:59:20,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 17:59:20,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:59:20,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 17:59:20,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 17:59:20,943 INFO L87 Difference]: Start difference. First operand 189 states and 246 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 17:59:21,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:59:21,018 INFO L93 Difference]: Finished difference Result 545 states and 729 transitions. [2022-07-13 17:59:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 17:59:21,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-07-13 17:59:21,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:59:21,028 INFO L225 Difference]: With dead ends: 545 [2022-07-13 17:59:21,028 INFO L226 Difference]: Without dead ends: 363 [2022-07-13 17:59:21,029 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 17:59:21,030 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 72 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:59:21,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 422 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:59:21,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-07-13 17:59:21,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 354. [2022-07-13 17:59:21,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 252 states have (on average 1.3253968253968254) internal successors, (334), 284 states have internal predecessors, (334), 62 states have call successors, (62), 42 states have call predecessors, (62), 39 states have return successors, (68), 39 states have call predecessors, (68), 62 states have call successors, (68) [2022-07-13 17:59:21,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 464 transitions. [2022-07-13 17:59:21,087 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 464 transitions. Word has length 34 [2022-07-13 17:59:21,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:59:21,090 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 464 transitions. [2022-07-13 17:59:21,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 17:59:21,090 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 464 transitions. [2022-07-13 17:59:21,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-13 17:59:21,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:59:21,099 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] [2022-07-13 17:59:21,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 17:59:21,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:59:21,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:59:21,100 INFO L85 PathProgramCache]: Analyzing trace with hash 633404019, now seen corresponding path program 1 times [2022-07-13 17:59:21,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:59:21,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308020061] [2022-07-13 17:59:21,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:59:21,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:59:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:21,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 17:59:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:59:21,170 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 17:59:21,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:59:21,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308020061] [2022-07-13 17:59:21,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308020061] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:59:21,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:59:21,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 17:59:21,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38799180] [2022-07-13 17:59:21,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:59:21,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:59:21,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:59:21,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:59:21,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 17:59:21,182 INFO L87 Difference]: Start difference. First operand 354 states and 464 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 17:59:21,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:59:21,210 INFO L93 Difference]: Finished difference Result 600 states and 796 transitions. [2022-07-13 17:59:21,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:59:21,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-07-13 17:59:21,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:59:21,212 INFO L225 Difference]: With dead ends: 600 [2022-07-13 17:59:21,212 INFO L226 Difference]: Without dead ends: 253 [2022-07-13 17:59:21,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 17:59:21,215 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:59:21,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 61 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:59:21,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-07-13 17:59:21,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2022-07-13 17:59:21,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 187 states have (on average 1.2513368983957218) internal successors, (234), 197 states have internal predecessors, (234), 32 states have call successors, (32), 32 states have call predecessors, (32), 29 states have return successors, (34), 29 states have call predecessors, (34), 32 states have call successors, (34) [2022-07-13 17:59:21,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 300 transitions. [2022-07-13 17:59:21,253 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 300 transitions. Word has length 36 [2022-07-13 17:59:21,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:59:21,253 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 300 transitions. [2022-07-13 17:59:21,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 17:59:21,254 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 300 transitions. [2022-07-13 17:59:21,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-13 17:59:21,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:59:21,255 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] [2022-07-13 17:59:21,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 17:59:21,256 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:59:21,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:59:21,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1555609492, now seen corresponding path program 1 times [2022-07-13 17:59:21,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:59:21,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569693698] [2022-07-13 17:59:21,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:59:21,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:59:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 17:59:21,292 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 17:59:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 17:59:21,347 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 17:59:21,348 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 17:59:21,349 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 17:59:21,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 17:59:21,356 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-13 17:59:21,360 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 17:59:21,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 05:59:21 BoogieIcfgContainer [2022-07-13 17:59:21,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 17:59:21,428 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 17:59:21,428 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 17:59:21,429 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 17:59:21,429 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:59:19" (3/4) ... [2022-07-13 17:59:21,431 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-13 17:59:21,494 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 17:59:21,494 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 17:59:21,495 INFO L158 Benchmark]: Toolchain (without parser) took 2635.66ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 81.7MB in the beginning and 81.5MB in the end (delta: 241.8kB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2022-07-13 17:59:21,495 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 79.7MB. Free memory was 55.3MB in the beginning and 55.3MB in the end (delta: 49.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 17:59:21,495 INFO L158 Benchmark]: CACSL2BoogieTranslator took 478.37ms. Allocated memory is still 102.8MB. Free memory was 81.5MB in the beginning and 64.4MB in the end (delta: 17.1MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2022-07-13 17:59:21,495 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.21ms. Allocated memory is still 102.8MB. Free memory was 64.4MB in the beginning and 62.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 17:59:21,496 INFO L158 Benchmark]: Boogie Preprocessor took 24.95ms. Allocated memory is still 102.8MB. Free memory was 62.0MB in the beginning and 60.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 17:59:21,496 INFO L158 Benchmark]: RCFGBuilder took 422.29ms. Allocated memory is still 102.8MB. Free memory was 60.4MB in the beginning and 43.7MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-13 17:59:21,496 INFO L158 Benchmark]: TraceAbstraction took 1576.18ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 43.2MB in the beginning and 84.5MB in the end (delta: -41.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 17:59:21,496 INFO L158 Benchmark]: Witness Printer took 65.88ms. Allocated memory is still 123.7MB. Free memory was 84.5MB in the beginning and 81.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 17:59:21,499 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 79.7MB. Free memory was 55.3MB in the beginning and 55.3MB in the end (delta: 49.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 478.37ms. Allocated memory is still 102.8MB. Free memory was 81.5MB in the beginning and 64.4MB in the end (delta: 17.1MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.21ms. Allocated memory is still 102.8MB. Free memory was 64.4MB in the beginning and 62.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.95ms. Allocated memory is still 102.8MB. Free memory was 62.0MB in the beginning and 60.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 422.29ms. Allocated memory is still 102.8MB. Free memory was 60.4MB in the beginning and 43.7MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1576.18ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 43.2MB in the beginning and 84.5MB in the end (delta: -41.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 65.88ms. Allocated memory is still 123.7MB. Free memory was 84.5MB in the beginning and 81.5MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. 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: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L499] int pumpRunning = 0; [L500] int systemActive = 1; [L727] int cleanupTimeShifts = 4; [L896] int waterLevel = 1; [L897] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L803] int retValue_acc ; [L804] int tmp ; [L808] FCALL select_helpers() [L809] FCALL select_features() [L810] CALL, EXPR valid_product() [L887] int retValue_acc ; [L890] retValue_acc = 1 [L891] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L810] RET, EXPR valid_product() [L810] tmp = valid_product() [L812] COND TRUE \read(tmp) [L814] FCALL setup() [L815] CALL runTest() [L794] CALL test() [L423] int splverifierCounter ; [L424] int tmp ; [L425] int tmp___0 ; [L426] int tmp___1 ; [L427] int tmp___2 ; [L430] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L432] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L434] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L440] tmp = __VERIFIER_nondet_int() [L442] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L444] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L914] COND TRUE waterLevel < 2 [L915] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L444] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L450] tmp___0 = __VERIFIER_nondet_int() [L452] 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] [L460] tmp___2 = __VERIFIER_nondet_int() [L462] COND FALSE !(\read(tmp___2)) [L468] tmp___1 = __VERIFIER_nondet_int() [L470] COND TRUE \read(tmp___1) [L472] CALL stopSystem() [L698] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L705] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L472] RET stopSystem() [L479] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L507] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L514] COND FALSE !(\read(systemActive)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L522] CALL __utac_acc__Specification3_spec__1() [L828] int tmp ; [L829] int tmp___0 ; [L830] int tmp___1 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L834] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L935] int retValue_acc ; [L938] retValue_acc = methaneLevelCritical [L939] 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=0, waterLevel=2] [L834] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L834] tmp = isMethaneLevelCritical() [L836] COND FALSE !(\read(tmp)) [L840] CALL, EXPR getWaterLevel() [L967] int retValue_acc ; [L970] retValue_acc = waterLevel [L971] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=2, systemActive=0, waterLevel=2] [L840] RET, EXPR getWaterLevel() [L840] tmp___0 = getWaterLevel() [L842] COND TRUE tmp___0 == 2 [L844] CALL, EXPR isPumpRunning() [L631] int retValue_acc ; [L634] retValue_acc = pumpRunning [L635] 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=0, waterLevel=2] [L844] RET, EXPR isPumpRunning() [L844] tmp___1 = isPumpRunning() [L846] COND FALSE !(\read(tmp___1)) [L850] CALL __automaton_fail() [L722] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 98 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 369 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 365 mSDsluCounter, 1313 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 784 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 166 IncrementalHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 529 mSDtfsCounter, 166 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=354occurred in iteration=4, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 35 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 296 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-13 17:59:21,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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