./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product13.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_product13.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 4e8d46dd9ecc40481581770f17d7ff7eeb44cf0ae7cc4edb04be6d125fad45fc --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:19:08,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:19:08,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:19:08,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:19:08,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:19:08,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:19:08,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:19:08,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:19:08,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:19:08,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:19:08,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:19:08,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:19:08,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:19:08,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:19:08,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:19:08,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:19:08,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:19:08,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:19:08,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:19:08,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:19:08,130 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:19:08,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:19:08,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:19:08,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:19:08,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:19:08,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:19:08,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:19:08,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:19:08,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:19:08,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:19:08,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:19:08,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:19:08,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:19:08,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:19:08,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:19:08,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:19:08,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:19:08,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:19:08,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:19:08,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:19:08,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:19:08,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:19:08,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:19:08,174 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:19:08,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:19:08,175 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:19:08,175 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:19:08,176 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:19:08,176 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:19:08,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:19:08,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:19:08,177 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:19:08,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:19:08,178 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:19:08,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:19:08,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:19:08,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:19:08,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:19:08,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:19:08,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:19:08,179 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:19:08,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:19:08,179 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:19:08,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:19:08,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:19:08,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:19:08,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:19:08,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:19:08,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:19:08,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:19:08,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:19:08,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:19:08,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:19:08,181 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:19:08,181 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:19:08,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:19:08,182 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e8d46dd9ecc40481581770f17d7ff7eeb44cf0ae7cc4edb04be6d125fad45fc [2022-07-12 06:19:08,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:19:08,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:19:08,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:19:08,590 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:19:08,591 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:19:08,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product13.cil.c [2022-07-12 06:19:08,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63944b28d/580bf1c81db144beacbe80b0c1ae7bd2/FLAGc4c675f25 [2022-07-12 06:19:09,414 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:19:09,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product13.cil.c [2022-07-12 06:19:09,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63944b28d/580bf1c81db144beacbe80b0c1ae7bd2/FLAGc4c675f25 [2022-07-12 06:19:09,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63944b28d/580bf1c81db144beacbe80b0c1ae7bd2 [2022-07-12 06:19:09,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:19:09,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:19:09,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:19:09,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:19:09,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:19:09,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:19:09" (1/1) ... [2022-07-12 06:19:09,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac9b736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:19:09, skipping insertion in model container [2022-07-12 06:19:09,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:19:09" (1/1) ... [2022-07-12 06:19:09,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:19:09,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:19:10,109 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_product13.cil.c[3343,3356] [2022-07-12 06:19:10,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:19:10,302 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:19:10,328 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_product13.cil.c[3343,3356] [2022-07-12 06:19:10,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:19:10,426 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:19:10,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:19:10 WrapperNode [2022-07-12 06:19:10,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:19:10,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:19:10,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:19:10,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:19:10,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:19:10" (1/1) ... [2022-07-12 06:19:10,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:19:10" (1/1) ... [2022-07-12 06:19:10,524 INFO L137 Inliner]: procedures = 51, calls = 151, calls flagged for inlining = 19, calls inlined = 15, statements flattened = 204 [2022-07-12 06:19:10,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:19:10,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:19:10,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:19:10,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:19:10,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:19:10" (1/1) ... [2022-07-12 06:19:10,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:19:10" (1/1) ... [2022-07-12 06:19:10,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:19:10" (1/1) ... [2022-07-12 06:19:10,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:19:10" (1/1) ... [2022-07-12 06:19:10,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:19:10" (1/1) ... [2022-07-12 06:19:10,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:19:10" (1/1) ... [2022-07-12 06:19:10,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:19:10" (1/1) ... [2022-07-12 06:19:10,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:19:10,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:19:10,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:19:10,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:19:10,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:19:10" (1/1) ... [2022-07-12 06:19:10,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:19:10,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:19:10,661 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) [2022-07-12 06:19:10,721 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 [2022-07-12 06:19:10,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:19:10,742 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-12 06:19:10,742 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-12 06:19:10,742 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-12 06:19:10,743 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-12 06:19:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-07-12 06:19:10,743 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-07-12 06:19:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-07-12 06:19:10,743 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-07-12 06:19:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-07-12 06:19:10,743 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-07-12 06:19:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-07-12 06:19:10,744 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-07-12 06:19:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:19:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-07-12 06:19:10,744 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-07-12 06:19:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:19:10,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:19:10,851 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:19:10,853 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:19:11,176 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:19:11,180 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:19:11,182 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 06:19:11,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:19:11 BoogieIcfgContainer [2022-07-12 06:19:11,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:19:11,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:19:11,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:19:11,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:19:11,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:19:09" (1/3) ... [2022-07-12 06:19:11,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc08e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:19:11, skipping insertion in model container [2022-07-12 06:19:11,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:19:10" (2/3) ... [2022-07-12 06:19:11,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc08e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:19:11, skipping insertion in model container [2022-07-12 06:19:11,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:19:11" (3/3) ... [2022-07-12 06:19:11,193 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product13.cil.c [2022-07-12 06:19:11,204 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:19:11,204 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:19:11,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:19:11,256 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@6e27893d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@44aaa672 [2022-07-12 06:19:11,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:19:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 64 states have internal predecessors, (80), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-12 06:19:11,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-12 06:19:11,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:19:11,268 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] [2022-07-12 06:19:11,269 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:19:11,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:19:11,274 INFO L85 PathProgramCache]: Analyzing trace with hash -427148648, now seen corresponding path program 1 times [2022-07-12 06:19:11,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:19:11,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569322451] [2022-07-12 06:19:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:19:11,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:19:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:19:11,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:19:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:19:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:19:11,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:19:11,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569322451] [2022-07-12 06:19:11,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569322451] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:19:11,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:19:11,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 06:19:11,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585396351] [2022-07-12 06:19:11,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:19:11,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 06:19:11,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:19:11,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 06:19:11,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 06:19:11,597 INFO L87 Difference]: Start difference. First operand has 78 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 64 states have internal predecessors, (80), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 10 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) [2022-07-12 06:19:11,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:19:11,631 INFO L93 Difference]: Finished difference Result 148 states and 199 transitions. [2022-07-12 06:19:11,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 06:19:11,633 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 [2022-07-12 06:19:11,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:19:11,641 INFO L225 Difference]: With dead ends: 148 [2022-07-12 06:19:11,641 INFO L226 Difference]: Without dead ends: 69 [2022-07-12 06:19:11,644 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 [2022-07-12 06:19:11,647 INFO L413 NwaCegarLoop]: 96 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, 96 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 [2022-07-12 06:19:11,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:19:11,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-07-12 06:19:11,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-07-12 06:19:11,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 56 states have internal predecessors, (66), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-12 06:19:11,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2022-07-12 06:19:11,691 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 25 [2022-07-12 06:19:11,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:19:11,692 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2022-07-12 06:19:11,692 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) [2022-07-12 06:19:11,692 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2022-07-12 06:19:11,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-12 06:19:11,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:19:11,695 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] [2022-07-12 06:19:11,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 06:19:11,696 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:19:11,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:19:11,697 INFO L85 PathProgramCache]: Analyzing trace with hash 595185369, now seen corresponding path program 1 times [2022-07-12 06:19:11,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:19:11,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720538433] [2022-07-12 06:19:11,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:19:11,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:19:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:19:11,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 06:19:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:19:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:19:11,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:19:11,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720538433] [2022-07-12 06:19:11,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720538433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:19:11,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:19:11,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:19:11,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036814266] [2022-07-12 06:19:11,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:19:11,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:19:11,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:19:11,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:19:11,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:19:11,817 INFO L87 Difference]: Start difference. First operand 69 states and 87 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) [2022-07-12 06:19:11,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:19:11,837 INFO L93 Difference]: Finished difference Result 104 states and 130 transitions. [2022-07-12 06:19:11,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:19:11,838 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 [2022-07-12 06:19:11,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:19:11,843 INFO L225 Difference]: With dead ends: 104 [2022-07-12 06:19:11,843 INFO L226 Difference]: Without dead ends: 60 [2022-07-12 06:19:11,847 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 [2022-07-12 06:19:11,848 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 12 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 132 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 [2022-07-12 06:19:11,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 132 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:19:11,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-07-12 06:19:11,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-07-12 06:19:11,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 50 states have internal predecessors, (59), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-12 06:19:11,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2022-07-12 06:19:11,862 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 26 [2022-07-12 06:19:11,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:19:11,863 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2022-07-12 06:19:11,863 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) [2022-07-12 06:19:11,863 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2022-07-12 06:19:11,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-12 06:19:11,864 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:19:11,865 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] [2022-07-12 06:19:11,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 06:19:11,865 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:19:11,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:19:11,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2103466448, now seen corresponding path program 1 times [2022-07-12 06:19:11,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:19:11,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743744849] [2022-07-12 06:19:11,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:19:11,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:19:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:19:11,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 06:19:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:19:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:19:11,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:19:11,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743744849] [2022-07-12 06:19:11,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743744849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:19:11,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:19:11,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:19:11,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985341416] [2022-07-12 06:19:11,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:19:11,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:19:11,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:19:11,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:19:11,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:19:11,978 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-07-12 06:19:12,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:19:12,076 INFO L93 Difference]: Finished difference Result 113 states and 144 transitions. [2022-07-12 06:19:12,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:19:12,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 30 [2022-07-12 06:19:12,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:19:12,079 INFO L225 Difference]: With dead ends: 113 [2022-07-12 06:19:12,079 INFO L226 Difference]: Without dead ends: 60 [2022-07-12 06:19:12,080 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 [2022-07-12 06:19:12,082 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 101 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:19:12,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 146 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:19:12,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-07-12 06:19:12,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-07-12 06:19:12,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 45 states have (on average 1.288888888888889) internal successors, (58), 50 states have internal predecessors, (58), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-12 06:19:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2022-07-12 06:19:12,093 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 30 [2022-07-12 06:19:12,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:19:12,093 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2022-07-12 06:19:12,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-07-12 06:19:12,094 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2022-07-12 06:19:12,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-12 06:19:12,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:19:12,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:19:12,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 06:19:12,098 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:19:12,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:19:12,098 INFO L85 PathProgramCache]: Analyzing trace with hash -911409767, now seen corresponding path program 1 times [2022-07-12 06:19:12,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:19:12,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182316135] [2022-07-12 06:19:12,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:19:12,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:19:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:19:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 06:19:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:19:12,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:19:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:19:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:19:12,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:19:12,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182316135] [2022-07-12 06:19:12,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182316135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:19:12,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:19:12,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:19:12,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12240474] [2022-07-12 06:19:12,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:19:12,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:19:12,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:19:12,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:19:12,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:19:12,192 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 06:19:12,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:19:12,247 INFO L93 Difference]: Finished difference Result 162 states and 208 transitions. [2022-07-12 06:19:12,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:19:12,248 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2022-07-12 06:19:12,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:19:12,251 INFO L225 Difference]: With dead ends: 162 [2022-07-12 06:19:12,251 INFO L226 Difference]: Without dead ends: 109 [2022-07-12 06:19:12,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:19:12,258 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 45 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:19:12,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 299 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:19:12,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-07-12 06:19:12,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2022-07-12 06:19:12,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 86 states have internal predecessors, (100), 16 states have call successors, (16), 12 states have call predecessors, (16), 11 states have return successors, (17), 13 states have call predecessors, (17), 16 states have call successors, (17) [2022-07-12 06:19:12,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 133 transitions. [2022-07-12 06:19:12,282 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 133 transitions. Word has length 35 [2022-07-12 06:19:12,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:19:12,283 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 133 transitions. [2022-07-12 06:19:12,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 06:19:12,283 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 133 transitions. [2022-07-12 06:19:12,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-12 06:19:12,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:19:12,288 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] [2022-07-12 06:19:12,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 06:19:12,288 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:19:12,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:19:12,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1013292140, now seen corresponding path program 1 times [2022-07-12 06:19:12,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:19:12,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535434076] [2022-07-12 06:19:12,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:19:12,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:19:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:19:12,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 06:19:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:19:12,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 06:19:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:19:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:19:12,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:19:12,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535434076] [2022-07-12 06:19:12,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535434076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:19:12,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:19:12,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:19:12,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600098247] [2022-07-12 06:19:12,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:19:12,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:19:12,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:19:12,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:19:12,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:19:12,349 INFO L87 Difference]: Start difference. First operand 106 states and 133 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 06:19:12,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:19:12,396 INFO L93 Difference]: Finished difference Result 182 states and 231 transitions. [2022-07-12 06:19:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:19:12,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2022-07-12 06:19:12,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:19:12,398 INFO L225 Difference]: With dead ends: 182 [2022-07-12 06:19:12,398 INFO L226 Difference]: Without dead ends: 83 [2022-07-12 06:19:12,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:19:12,400 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:19:12,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 53 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:19:12,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-12 06:19:12,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-07-12 06:19:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 67 states have internal predecessors, (78), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-12 06:19:12,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 98 transitions. [2022-07-12 06:19:12,411 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 98 transitions. Word has length 37 [2022-07-12 06:19:12,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:19:12,411 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 98 transitions. [2022-07-12 06:19:12,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 06:19:12,411 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 98 transitions. [2022-07-12 06:19:12,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-12 06:19:12,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:19:12,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:19:12,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 06:19:12,413 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:19:12,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:19:12,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1779490157, now seen corresponding path program 1 times [2022-07-12 06:19:12,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:19:12,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820507246] [2022-07-12 06:19:12,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:19:12,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:19:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 06:19:12,456 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 06:19:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 06:19:12,499 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 06:19:12,499 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 06:19:12,500 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 06:19:12,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:19:12,505 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-12 06:19:12,508 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 06:19:12,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 06:19:12 BoogieIcfgContainer [2022-07-12 06:19:12,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 06:19:12,560 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 06:19:12,560 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 06:19:12,561 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 06:19:12,561 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:19:11" (3/4) ... [2022-07-12 06:19:12,562 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 06:19:12,611 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 06:19:12,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 06:19:12,612 INFO L158 Benchmark]: Toolchain (without parser) took 2908.29ms. Allocated memory is still 119.5MB. Free memory was 83.6MB in the beginning and 77.7MB in the end (delta: 5.9MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2022-07-12 06:19:12,612 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 119.5MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 06:19:12,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 707.78ms. Allocated memory is still 119.5MB. Free memory was 83.4MB in the beginning and 86.6MB in the end (delta: -3.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 06:19:12,613 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.17ms. Allocated memory is still 119.5MB. Free memory was 86.6MB in the beginning and 84.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 06:19:12,613 INFO L158 Benchmark]: Boogie Preprocessor took 58.53ms. Allocated memory is still 119.5MB. Free memory was 84.2MB in the beginning and 82.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 06:19:12,613 INFO L158 Benchmark]: RCFGBuilder took 600.26ms. Allocated memory is still 119.5MB. Free memory was 82.9MB in the beginning and 67.4MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-12 06:19:12,613 INFO L158 Benchmark]: TraceAbstraction took 1373.38ms. Allocated memory is still 119.5MB. Free memory was 67.0MB in the beginning and 81.1MB in the end (delta: -14.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 06:19:12,614 INFO L158 Benchmark]: Witness Printer took 51.40ms. Allocated memory is still 119.5MB. Free memory was 81.1MB in the beginning and 77.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 06:19:12,615 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 119.5MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 707.78ms. Allocated memory is still 119.5MB. Free memory was 83.4MB in the beginning and 86.6MB in the end (delta: -3.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.17ms. Allocated memory is still 119.5MB. Free memory was 86.6MB in the beginning and 84.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.53ms. Allocated memory is still 119.5MB. Free memory was 84.2MB in the beginning and 82.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 600.26ms. Allocated memory is still 119.5MB. Free memory was 82.9MB in the beginning and 67.4MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1373.38ms. Allocated memory is still 119.5MB. Free memory was 67.0MB in the beginning and 81.1MB in the end (delta: -14.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 51.40ms. Allocated memory is still 119.5MB. Free memory was 81.1MB in the beginning and 77.7MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. 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: 178]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L56] int waterLevel = 1; [L57] int methaneLevelCritical = 0; [L183] int cleanupTimeShifts = 4; [L285] int pumpRunning = 0; [L286] int systemActive = 1; [L704] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L259] int retValue_acc ; [L260] int tmp ; [L264] FCALL select_helpers() [L265] FCALL select_features() [L266] CALL, EXPR valid_product() [L165] int retValue_acc ; [L168] retValue_acc = 1 [L169] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L266] RET, EXPR valid_product() [L266] tmp = valid_product() [L268] COND TRUE \read(tmp) [L270] FCALL setup() [L271] CALL runTest() [L253] CALL test() [L471] int splverifierCounter ; [L472] int tmp ; [L473] int tmp___0 ; [L474] int tmp___1 ; [L475] int tmp___2 ; [L478] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L480] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L482] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L488] tmp = __VERIFIER_nondet_int() [L490] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L492] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L74] COND TRUE waterLevel < 2 [L75] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L492] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L498] tmp___0 = __VERIFIER_nondet_int() [L500] 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] [L508] tmp___2 = __VERIFIER_nondet_int() [L510] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L523] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L293] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L300] COND TRUE \read(systemActive) [L302] CALL processEnvironment() [L322] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L325] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L340] FCALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L302] RET processEnvironment() [L308] CALL __utac_acc__Specification3_spec__1() [L437] int tmp ; [L438] int tmp___0 ; [L439] int tmp___1 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L443] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L95] int retValue_acc ; [L98] retValue_acc = methaneLevelCritical [L99] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L443] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L443] tmp = isMethaneLevelCritical() [L445] COND FALSE !(\read(tmp)) [L449] CALL, EXPR getWaterLevel() [L127] int retValue_acc ; [L130] retValue_acc = waterLevel [L131] 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=1, waterLevel=2] [L449] RET, EXPR getWaterLevel() [L449] tmp___0 = getWaterLevel() [L451] COND TRUE tmp___0 == 2 [L453] CALL, EXPR isPumpRunning() [L391] int retValue_acc ; [L394] retValue_acc = pumpRunning [L395] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L453] RET, EXPR isPumpRunning() [L453] tmp___1 = isPumpRunning() [L455] COND FALSE !(\read(tmp___1)) [L459] CALL __automaton_fail() [L178] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 201 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 198 mSDsluCounter, 726 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 355 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62 IncrementalHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 371 mSDtfsCounter, 62 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=4, InterpolantAutomatonStates: 18, 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 284 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! [2022-07-12 06:19:12,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE