./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_product20.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 43c19ce3e2b7787ecf8dd3f4cbbbb7bba1e2bcc266043b083140097432ac956b --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:24:25,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:24:25,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:24:25,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:24:25,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:24:25,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:24:25,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:24:25,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:24:25,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:24:25,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:24:25,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:24:25,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:24:25,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:24:25,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:24:25,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:24:25,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:24:25,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:24:25,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:24:25,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:24:25,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:24:25,751 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:24:25,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:24:25,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:24:25,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:24:25,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:24:25,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:24:25,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:24:25,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:24:25,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:24:25,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:24:25,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:24:25,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:24:25,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:24:25,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:24:25,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:24:25,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:24:25,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:24:25,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:24:25,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:24:25,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:24:25,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:24:25,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:24:25,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:24:25,793 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:24:25,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:24:25,794 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:24:25,794 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:24:25,795 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:24:25,795 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:24:25,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:24:25,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:24:25,796 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:24:25,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:24:25,797 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:24:25,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:24:25,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:24:25,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:24:25,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:24:25,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:24:25,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:24:25,799 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:24:25,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:24:25,799 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:24:25,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:24:25,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:24:25,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:24:25,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:24:25,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:24:25,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:24:25,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:24:25,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:24:25,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:24:25,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:24:25,802 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:24:25,802 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:24:25,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:24:25,802 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c19ce3e2b7787ecf8dd3f4cbbbb7bba1e2bcc266043b083140097432ac956b [2022-07-19 17:24:26,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:24:26,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:24:26,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:24:26,055 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:24:26,056 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:24:26,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product20.cil.c [2022-07-19 17:24:26,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35548656d/b2ad8f6185c9430fad4670f3000b9c0d/FLAG16e9d29c9 [2022-07-19 17:24:26,529 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:24:26,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product20.cil.c [2022-07-19 17:24:26,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35548656d/b2ad8f6185c9430fad4670f3000b9c0d/FLAG16e9d29c9 [2022-07-19 17:24:26,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35548656d/b2ad8f6185c9430fad4670f3000b9c0d [2022-07-19 17:24:26,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:24:26,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:24:26,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:24:26,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:24:26,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:24:26,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:24:26" (1/1) ... [2022-07-19 17:24:26,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3031895b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:26, skipping insertion in model container [2022-07-19 17:24:26,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:24:26" (1/1) ... [2022-07-19 17:24:26,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:24:26,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:24:26,910 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_product20.cil.c[17955,17968] [2022-07-19 17:24:26,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:24:26,923 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:24:27,024 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_product20.cil.c[17955,17968] [2022-07-19 17:24:27,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:24:27,043 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:24:27,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:27 WrapperNode [2022-07-19 17:24:27,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:24:27,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:24:27,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:24:27,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:24:27,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:27" (1/1) ... [2022-07-19 17:24:27,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:27" (1/1) ... [2022-07-19 17:24:27,121 INFO L137 Inliner]: procedures = 54, calls = 153, calls flagged for inlining = 21, calls inlined = 18, statements flattened = 231 [2022-07-19 17:24:27,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:24:27,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:24:27,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:24:27,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:24:27,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:27" (1/1) ... [2022-07-19 17:24:27,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:27" (1/1) ... [2022-07-19 17:24:27,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:27" (1/1) ... [2022-07-19 17:24:27,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:27" (1/1) ... [2022-07-19 17:24:27,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:27" (1/1) ... [2022-07-19 17:24:27,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:27" (1/1) ... [2022-07-19 17:24:27,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:27" (1/1) ... [2022-07-19 17:24:27,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:24:27,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:24:27,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:24:27,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:24:27,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:27" (1/1) ... [2022-07-19 17:24:27,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:24:27,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:24:27,191 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) [2022-07-19 17:24:27,195 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 [2022-07-19 17:24:27,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:24:27,221 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-07-19 17:24:27,221 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-07-19 17:24:27,221 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-07-19 17:24:27,221 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-07-19 17:24:27,222 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-19 17:24:27,222 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-19 17:24:27,222 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-19 17:24:27,222 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-19 17:24:27,222 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-07-19 17:24:27,222 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-07-19 17:24:27,223 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-07-19 17:24:27,223 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-07-19 17:24:27,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:24:27,223 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-07-19 17:24:27,223 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-07-19 17:24:27,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:24:27,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:24:27,301 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:24:27,302 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:24:27,565 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:24:27,573 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:24:27,573 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 17:24:27,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:24:27 BoogieIcfgContainer [2022-07-19 17:24:27,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:24:27,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:24:27,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:24:27,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:24:27,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:24:26" (1/3) ... [2022-07-19 17:24:27,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b56830c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:24:27, skipping insertion in model container [2022-07-19 17:24:27,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:24:27" (2/3) ... [2022-07-19 17:24:27,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b56830c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:24:27, skipping insertion in model container [2022-07-19 17:24:27,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:24:27" (3/3) ... [2022-07-19 17:24:27,593 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product20.cil.c [2022-07-19 17:24:27,605 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:24:27,605 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:24:27,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:24:27,664 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@2ccc9a93, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@108032ec [2022-07-19 17:24:27,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:24:27,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 63 states have (on average 1.380952380952381) internal successors, (87), 70 states have internal predecessors, (87), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-19 17:24:27,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-19 17:24:27,690 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:24:27,691 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] [2022-07-19 17:24:27,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:24:27,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:24:27,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1306475585, now seen corresponding path program 1 times [2022-07-19 17:24:27,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:24:27,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991630177] [2022-07-19 17:24:27,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:24:27,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:24:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:27,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 17:24:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:27,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:24:27,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:24:27,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991630177] [2022-07-19 17:24:27,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991630177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:24:27,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:24:27,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 17:24:27,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411185457] [2022-07-19 17:24:27,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:24:27,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 17:24:27,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:24:27,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 17:24:27,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 17:24:27,999 INFO L87 Difference]: Start difference. First operand has 83 states, 63 states have (on average 1.380952380952381) internal successors, (87), 70 states have internal predecessors, (87), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) 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) [2022-07-19 17:24:28,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:24:28,031 INFO L93 Difference]: Finished difference Result 158 states and 213 transitions. [2022-07-19 17:24:28,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 17:24:28,035 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 [2022-07-19 17:24:28,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:24:28,045 INFO L225 Difference]: With dead ends: 158 [2022-07-19 17:24:28,045 INFO L226 Difference]: Without dead ends: 74 [2022-07-19 17:24:28,048 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 [2022-07-19 17:24:28,051 INFO L413 NwaCegarLoop]: 103 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, 103 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 [2022-07-19 17:24:28,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:24:28,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-19 17:24:28,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-07-19 17:24:28,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 62 states have internal predecessors, (73), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-19 17:24:28,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2022-07-19 17:24:28,094 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2022-07-19 17:24:28,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:24:28,095 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2022-07-19 17:24:28,095 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) [2022-07-19 17:24:28,096 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2022-07-19 17:24:28,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-19 17:24:28,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:24:28,098 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] [2022-07-19 17:24:28,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 17:24:28,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:24:28,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:24:28,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1441839023, now seen corresponding path program 1 times [2022-07-19 17:24:28,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:24:28,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621948788] [2022-07-19 17:24:28,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:24:28,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:24:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:28,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:24:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:24:28,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:24:28,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621948788] [2022-07-19 17:24:28,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621948788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:24:28,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:24:28,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:24:28,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627160373] [2022-07-19 17:24:28,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:24:28,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:24:28,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:24:28,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:24:28,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:24:28,181 INFO L87 Difference]: Start difference. First operand 74 states and 94 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) [2022-07-19 17:24:28,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:24:28,212 INFO L93 Difference]: Finished difference Result 109 states and 137 transitions. [2022-07-19 17:24:28,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:24:28,215 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 [2022-07-19 17:24:28,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:24:28,216 INFO L225 Difference]: With dead ends: 109 [2022-07-19 17:24:28,216 INFO L226 Difference]: Without dead ends: 65 [2022-07-19 17:24:28,217 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 [2022-07-19 17:24:28,218 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 17 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 140 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 [2022-07-19 17:24:28,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 140 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:24:28,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-07-19 17:24:28,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-07-19 17:24:28,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 50 states have (on average 1.32) internal successors, (66), 56 states have internal predecessors, (66), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 17:24:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2022-07-19 17:24:28,226 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 26 [2022-07-19 17:24:28,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:24:28,227 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2022-07-19 17:24:28,230 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) [2022-07-19 17:24:28,230 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2022-07-19 17:24:28,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-19 17:24:28,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:24:28,235 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] [2022-07-19 17:24:28,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 17:24:28,236 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:24:28,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:24:28,237 INFO L85 PathProgramCache]: Analyzing trace with hash -2084051564, now seen corresponding path program 1 times [2022-07-19 17:24:28,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:24:28,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445310445] [2022-07-19 17:24:28,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:24:28,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:24:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:28,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 17:24:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:28,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:24:28,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:24:28,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445310445] [2022-07-19 17:24:28,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445310445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:24:28,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:24:28,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:24:28,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140401073] [2022-07-19 17:24:28,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:24:28,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:24:28,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:24:28,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:24:28,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:24:28,384 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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) [2022-07-19 17:24:28,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:24:28,508 INFO L93 Difference]: Finished difference Result 167 states and 215 transitions. [2022-07-19 17:24:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:24:28,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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 [2022-07-19 17:24:28,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:24:28,515 INFO L225 Difference]: With dead ends: 167 [2022-07-19 17:24:28,515 INFO L226 Difference]: Without dead ends: 109 [2022-07-19 17:24:28,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:24:28,523 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 145 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:24:28,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 294 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 17:24:28,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-07-19 17:24:28,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2022-07-19 17:24:28,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.345679012345679) internal successors, (109), 90 states have internal predecessors, (109), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (14), 10 states have call predecessors, (14), 13 states have call successors, (14) [2022-07-19 17:24:28,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 136 transitions. [2022-07-19 17:24:28,548 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 136 transitions. Word has length 31 [2022-07-19 17:24:28,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:24:28,548 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 136 transitions. [2022-07-19 17:24:28,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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) [2022-07-19 17:24:28,548 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 136 transitions. [2022-07-19 17:24:28,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-19 17:24:28,551 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:24:28,551 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] [2022-07-19 17:24:28,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 17:24:28,552 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:24:28,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:24:28,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1036222709, now seen corresponding path program 1 times [2022-07-19 17:24:28,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:24:28,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182686730] [2022-07-19 17:24:28,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:24:28,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:24:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:28,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 17:24:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:24:28,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:24:28,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182686730] [2022-07-19 17:24:28,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182686730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:24:28,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:24:28,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:24:28,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113279307] [2022-07-19 17:24:28,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:24:28,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:24:28,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:24:28,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:24:28,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:24:28,673 INFO L87 Difference]: Start difference. First operand 106 states and 136 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) [2022-07-19 17:24:28,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:24:28,734 INFO L93 Difference]: Finished difference Result 298 states and 398 transitions. [2022-07-19 17:24:28,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 17:24:28,735 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 [2022-07-19 17:24:28,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:24:28,738 INFO L225 Difference]: With dead ends: 298 [2022-07-19 17:24:28,739 INFO L226 Difference]: Without dead ends: 199 [2022-07-19 17:24:28,741 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 [2022-07-19 17:24:28,751 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 52 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 327 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 [2022-07-19 17:24:28,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 327 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:24:28,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-07-19 17:24:28,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 193. [2022-07-19 17:24:28,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 146 states have (on average 1.3287671232876712) internal successors, (194), 161 states have internal predecessors, (194), 26 states have call successors, (26), 22 states have call predecessors, (26), 20 states have return successors, (31), 18 states have call predecessors, (31), 26 states have call successors, (31) [2022-07-19 17:24:28,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 251 transitions. [2022-07-19 17:24:28,794 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 251 transitions. Word has length 34 [2022-07-19 17:24:28,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:24:28,795 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 251 transitions. [2022-07-19 17:24:28,795 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) [2022-07-19 17:24:28,795 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 251 transitions. [2022-07-19 17:24:28,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-19 17:24:28,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:24:28,798 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] [2022-07-19 17:24:28,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 17:24:28,798 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:24:28,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:24:28,799 INFO L85 PathProgramCache]: Analyzing trace with hash 316897146, now seen corresponding path program 1 times [2022-07-19 17:24:28,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:24:28,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684585044] [2022-07-19 17:24:28,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:24:28,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:24:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:28,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 17:24:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:24:28,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:24:28,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:24:28,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684585044] [2022-07-19 17:24:28,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684585044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:24:28,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:24:28,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:24:28,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186110287] [2022-07-19 17:24:28,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:24:28,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:24:28,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:24:28,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:24:28,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:24:28,867 INFO L87 Difference]: Start difference. First operand 193 states and 251 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) [2022-07-19 17:24:28,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:24:28,886 INFO L93 Difference]: Finished difference Result 343 states and 454 transitions. [2022-07-19 17:24:28,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:24:28,892 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 [2022-07-19 17:24:28,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:24:28,895 INFO L225 Difference]: With dead ends: 343 [2022-07-19 17:24:28,895 INFO L226 Difference]: Without dead ends: 157 [2022-07-19 17:24:28,896 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 [2022-07-19 17:24:28,897 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:24:28,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 57 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:24:28,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-19 17:24:28,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2022-07-19 17:24:28,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 120 states have (on average 1.2666666666666666) internal successors, (152), 127 states have internal predecessors, (152), 18 states have call successors, (18), 18 states have call predecessors, (18), 16 states have return successors, (20), 16 states have call predecessors, (20), 18 states have call successors, (20) [2022-07-19 17:24:28,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 190 transitions. [2022-07-19 17:24:28,925 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 190 transitions. Word has length 36 [2022-07-19 17:24:28,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:24:28,926 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 190 transitions. [2022-07-19 17:24:28,926 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) [2022-07-19 17:24:28,926 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 190 transitions. [2022-07-19 17:24:28,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-19 17:24:28,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:24:28,928 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] [2022-07-19 17:24:28,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 17:24:28,928 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:24:28,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:24:28,929 INFO L85 PathProgramCache]: Analyzing trace with hash 957099611, now seen corresponding path program 1 times [2022-07-19 17:24:28,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:24:28,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830409842] [2022-07-19 17:24:28,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:24:28,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:24:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 17:24:28,959 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 17:24:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 17:24:29,009 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 17:24:29,009 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 17:24:29,010 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 17:24:29,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 17:24:29,017 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-19 17:24:29,020 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 17:24:29,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 05:24:29 BoogieIcfgContainer [2022-07-19 17:24:29,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 17:24:29,083 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 17:24:29,083 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 17:24:29,083 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 17:24:29,084 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:24:27" (3/4) ... [2022-07-19 17:24:29,086 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-19 17:24:29,138 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 17:24:29,138 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 17:24:29,139 INFO L158 Benchmark]: Toolchain (without parser) took 2586.56ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 65.3MB in the beginning and 40.3MB in the end (delta: 25.1MB). Peak memory consumption was 46.2MB. Max. memory is 16.1GB. [2022-07-19 17:24:29,140 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 100.7MB. Free memory was 53.2MB in the beginning and 53.2MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 17:24:29,140 INFO L158 Benchmark]: CACSL2BoogieTranslator took 490.51ms. Allocated memory is still 100.7MB. Free memory was 65.1MB in the beginning and 67.1MB in the end (delta: -2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 17:24:29,140 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.26ms. Allocated memory is still 100.7MB. Free memory was 67.1MB in the beginning and 64.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 17:24:29,140 INFO L158 Benchmark]: Boogie Preprocessor took 29.04ms. Allocated memory is still 100.7MB. Free memory was 64.7MB in the beginning and 63.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 17:24:29,146 INFO L158 Benchmark]: RCFGBuilder took 423.38ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 63.0MB in the beginning and 95.5MB in the end (delta: -32.5MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2022-07-19 17:24:29,147 INFO L158 Benchmark]: TraceAbstraction took 1495.34ms. Allocated memory is still 121.6MB. Free memory was 97.1MB in the beginning and 43.3MB in the end (delta: 53.8MB). Peak memory consumption was 53.4MB. Max. memory is 16.1GB. [2022-07-19 17:24:29,147 INFO L158 Benchmark]: Witness Printer took 55.40ms. Allocated memory is still 121.6MB. Free memory was 43.3MB in the beginning and 40.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 17:24:29,149 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 100.7MB. Free memory was 53.2MB in the beginning and 53.2MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 490.51ms. Allocated memory is still 100.7MB. Free memory was 65.1MB in the beginning and 67.1MB in the end (delta: -2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.26ms. Allocated memory is still 100.7MB. Free memory was 67.1MB in the beginning and 64.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.04ms. Allocated memory is still 100.7MB. Free memory was 64.7MB in the beginning and 63.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 423.38ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 63.0MB in the beginning and 95.5MB in the end (delta: -32.5MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1495.34ms. Allocated memory is still 121.6MB. Free memory was 97.1MB in the beginning and 43.3MB in the end (delta: 53.8MB). Peak memory consumption was 53.4MB. Max. memory is 16.1GB. * Witness Printer took 55.40ms. Allocated memory is still 121.6MB. Free memory was 43.3MB in the beginning and 40.3MB in the end (delta: 3.1MB). 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: 937]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L257] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L454] int cleanupTimeShifts = 4; [L600] int pumpRunning = 0; [L601] int systemActive = 1; [L844] int waterLevel = 1; [L845] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L532] int retValue_acc ; [L533] int tmp ; [L537] FCALL select_helpers() [L538] FCALL select_features() [L539] CALL, EXPR valid_product() [L79] int retValue_acc ; [L82] retValue_acc = 1 [L83] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L539] RET, EXPR valid_product() [L539] tmp = valid_product() [L541] COND TRUE \read(tmp) [L543] FCALL setup() [L544] CALL runTest() [L526] CALL test() [L776] int splverifierCounter ; [L777] int tmp ; [L778] int tmp___0 ; [L779] int tmp___1 ; [L780] int tmp___2 ; [L783] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L785] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L787] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L793] tmp = __VERIFIER_nondet_int() [L795] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L797] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L862] COND TRUE waterLevel < 2 [L863] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L797] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L803] tmp___0 = __VERIFIER_nondet_int() [L805] 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] [L813] tmp___2 = __VERIFIER_nondet_int() [L815] COND FALSE !(\read(tmp___2)) [L821] tmp___1 = __VERIFIER_nondet_int() [L823] COND TRUE \read(tmp___1) [L825] CALL stopSystem() [L755] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L762] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L825] RET stopSystem() [L832] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L607] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L614] COND FALSE !(\read(systemActive)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L622] CALL __utac_acc__Specification3_spec__1() [L560] int tmp ; [L561] int tmp___0 ; [L562] int tmp___1 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L566] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L883] int retValue_acc ; [L886] retValue_acc = methaneLevelCritical [L887] 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] [L566] 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] [L566] tmp = isMethaneLevelCritical() [L568] COND FALSE !(\read(tmp)) [L572] CALL, EXPR getWaterLevel() [L915] int retValue_acc ; [L918] retValue_acc = waterLevel [L919] 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] [L572] RET, EXPR getWaterLevel() [L572] tmp___0 = getWaterLevel() [L574] COND TRUE tmp___0 == 2 [L576] CALL, EXPR isPumpRunning() [L688] int retValue_acc ; [L691] retValue_acc = pumpRunning [L692] 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] [L576] RET, EXPR isPumpRunning() [L576] tmp___1 = isPumpRunning() [L578] COND FALSE !(\read(tmp___1)) [L582] CALL __automaton_fail() [L937] 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 8 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 259 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 255 mSDsluCounter, 921 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 496 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 425 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=193occurred 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 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, 263 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! [2022-07-19 17:24:29,193 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