./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_spec1_product41.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 7e401b19fa73801dafa3ee94892588c53fc375d864d82edcc9ff671172238c8c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:14:06,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:14:06,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:14:06,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:14:06,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:14:06,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:14:06,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:14:06,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:14:06,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:14:06,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:14:06,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:14:06,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:14:06,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:14:06,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:14:06,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:14:06,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:14:06,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:14:06,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:14:06,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:14:06,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:14:06,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:14:06,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:14:06,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:14:06,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:14:06,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:14:06,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:14:06,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:14:06,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:14:06,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:14:06,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:14:06,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:14:06,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:14:06,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:14:06,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:14:06,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:14:06,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:14:06,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:14:06,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:14:06,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:14:06,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:14:06,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:14:06,669 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:14:06,683 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:14:06,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:14:06,685 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:14:06,685 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:14:06,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:14:06,686 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:14:06,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:14:06,687 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:14:06,687 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:14:06,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:14:06,688 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:14:06,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:14:06,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:14:06,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:14:06,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:14:06,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:14:06,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:14:06,689 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:14:06,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:14:06,689 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:14:06,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:14:06,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:14:06,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:14:06,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:14:06,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:14:06,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:14:06,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:14:06,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:14:06,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:14:06,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:14:06,691 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:14:06,691 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:14:06,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:14:06,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:14:06,691 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e401b19fa73801dafa3ee94892588c53fc375d864d82edcc9ff671172238c8c [2021-12-21 13:14:06,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:14:06,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:14:06,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:14:06,915 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:14:06,916 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:14:06,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c [2021-12-21 13:14:06,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2147dcce4/c2f0b518faed47fabb11a7f95ce6fb60/FLAGc0fe1dbf4 [2021-12-21 13:14:07,387 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:14:07,387 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product41.cil.c [2021-12-21 13:14:07,400 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2147dcce4/c2f0b518faed47fabb11a7f95ce6fb60/FLAGc0fe1dbf4 [2021-12-21 13:14:07,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2147dcce4/c2f0b518faed47fabb11a7f95ce6fb60 [2021-12-21 13:14:07,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:14:07,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:14:07,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:14:07,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:14:07,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:14:07,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:14:07" (1/1) ... [2021-12-21 13:14:07,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@147709b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:14:07, skipping insertion in model container [2021-12-21 13:14:07,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:14:07" (1/1) ... [2021-12-21 13:14:07,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:14:07,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:14:07,734 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_spec1_product41.cil.c[17493,17506] [2021-12-21 13:14:07,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:14:07,756 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:14:07,796 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_spec1_product41.cil.c[17493,17506] [2021-12-21 13:14:07,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:14:07,820 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:14:07,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:14:07 WrapperNode [2021-12-21 13:14:07,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:14:07,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:14:07,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:14:07,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:14:07,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:14:07" (1/1) ... [2021-12-21 13:14:07,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:14:07" (1/1) ... [2021-12-21 13:14:07,870 INFO L137 Inliner]: procedures = 53, calls = 151, calls flagged for inlining = 21, calls inlined = 18, statements flattened = 234 [2021-12-21 13:14:07,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:14:07,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:14:07,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:14:07,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:14:07,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:14:07" (1/1) ... [2021-12-21 13:14:07,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:14:07" (1/1) ... [2021-12-21 13:14:07,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:14:07" (1/1) ... [2021-12-21 13:14:07,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:14:07" (1/1) ... [2021-12-21 13:14:07,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:14:07" (1/1) ... [2021-12-21 13:14:07,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:14:07" (1/1) ... [2021-12-21 13:14:07,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:14:07" (1/1) ... [2021-12-21 13:14:07,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:14:07,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:14:07,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:14:07,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:14:07,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:14:07" (1/1) ... [2021-12-21 13:14:07,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:14:07,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:14:07,933 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) [2021-12-21 13:14:07,949 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 [2021-12-21 13:14:07,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:14:07,962 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-12-21 13:14:07,962 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-12-21 13:14:07,962 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-12-21 13:14:07,963 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-12-21 13:14:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-21 13:14:07,963 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-21 13:14:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-21 13:14:07,963 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-21 13:14:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-12-21 13:14:07,963 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-12-21 13:14:07,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:14:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-12-21 13:14:07,964 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-12-21 13:14:07,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:14:07,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:14:08,012 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:14:08,013 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:14:08,256 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:14:08,260 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:14:08,269 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 13:14:08,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:14:08 BoogieIcfgContainer [2021-12-21 13:14:08,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:14:08,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:14:08,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:14:08,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:14:08,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:14:07" (1/3) ... [2021-12-21 13:14:08,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1daebb8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:14:08, skipping insertion in model container [2021-12-21 13:14:08,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:14:07" (2/3) ... [2021-12-21 13:14:08,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1daebb8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:14:08, skipping insertion in model container [2021-12-21 13:14:08,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:14:08" (3/3) ... [2021-12-21 13:14:08,279 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product41.cil.c [2021-12-21 13:14:08,282 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:14:08,282 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:14:08,327 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:14:08,334 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 13:14:08,334 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:14:08,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 61 states have (on average 1.3934426229508197) internal successors, (85), 67 states have internal predecessors, (85), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-21 13:14:08,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-21 13:14:08,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:14:08,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:14:08,358 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:14:08,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:14:08,363 INFO L85 PathProgramCache]: Analyzing trace with hash 641919507, now seen corresponding path program 1 times [2021-12-21 13:14:08,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:14:08,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470852279] [2021-12-21 13:14:08,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:14:08,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:14:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:08,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 13:14:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:08,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:14:08,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:14:08,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470852279] [2021-12-21 13:14:08,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470852279] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:14:08,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:14:08,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 13:14:08,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717074555] [2021-12-21 13:14:08,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:14:08,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 13:14:08,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:14:08,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 13:14:08,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 13:14:08,563 INFO L87 Difference]: Start difference. First operand has 79 states, 61 states have (on average 1.3934426229508197) internal successors, (85), 67 states have internal predecessors, (85), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2021-12-21 13:14:08,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:14:08,597 INFO L93 Difference]: Finished difference Result 150 states and 205 transitions. [2021-12-21 13:14:08,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 13:14:08,599 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 23 [2021-12-21 13:14:08,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:14:08,609 INFO L225 Difference]: With dead ends: 150 [2021-12-21 13:14:08,609 INFO L226 Difference]: Without dead ends: 70 [2021-12-21 13:14:08,612 INFO L932 BasicCegarLoop]: 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 [2021-12-21 13:14:08,616 INFO L933 BasicCegarLoop]: 99 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, 99 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 [2021-12-21 13:14:08,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:14:08,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-21 13:14:08,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-12-21 13:14:08,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 59 states have internal predecessors, (71), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-21 13:14:08,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2021-12-21 13:14:08,656 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 23 [2021-12-21 13:14:08,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:14:08,656 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2021-12-21 13:14:08,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2021-12-21 13:14:08,657 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2021-12-21 13:14:08,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 13:14:08,659 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:14:08,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:14:08,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 13:14:08,660 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:14:08,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:14:08,663 INFO L85 PathProgramCache]: Analyzing trace with hash 298217176, now seen corresponding path program 1 times [2021-12-21 13:14:08,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:14:08,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601999858] [2021-12-21 13:14:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:14:08,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:14:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:08,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 13:14:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:14:08,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:14:08,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601999858] [2021-12-21 13:14:08,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601999858] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:14:08,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:14:08,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:14:08,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748483400] [2021-12-21 13:14:08,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:14:08,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:14:08,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:14:08,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:14:08,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:14:08,778 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-12-21 13:14:08,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:14:08,797 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2021-12-21 13:14:08,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:14:08,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 24 [2021-12-21 13:14:08,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:14:08,800 INFO L225 Difference]: With dead ends: 106 [2021-12-21 13:14:08,802 INFO L226 Difference]: Without dead ends: 61 [2021-12-21 13:14:08,804 INFO L932 BasicCegarLoop]: 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 [2021-12-21 13:14:08,806 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 12 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 138 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 [2021-12-21 13:14:08,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 138 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:14:08,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-21 13:14:08,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-12-21 13:14:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 53 states have internal predecessors, (64), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-21 13:14:08,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2021-12-21 13:14:08,813 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 24 [2021-12-21 13:14:08,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:14:08,817 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2021-12-21 13:14:08,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-12-21 13:14:08,818 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2021-12-21 13:14:08,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-21 13:14:08,819 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:14:08,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:14:08,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 13:14:08,820 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:14:08,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:14:08,820 INFO L85 PathProgramCache]: Analyzing trace with hash -851512189, now seen corresponding path program 1 times [2021-12-21 13:14:08,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:14:08,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533555440] [2021-12-21 13:14:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:14:08,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:14:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:08,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 13:14:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:14:08,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:14:08,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533555440] [2021-12-21 13:14:08,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533555440] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:14:08,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:14:08,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:14:08,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385901678] [2021-12-21 13:14:08,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:14:08,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:14:08,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:14:08,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:14:08,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:14:08,899 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-12-21 13:14:08,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:14:08,919 INFO L93 Difference]: Finished difference Result 115 states and 150 transitions. [2021-12-21 13:14:08,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:14:08,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 28 [2021-12-21 13:14:08,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:14:08,921 INFO L225 Difference]: With dead ends: 115 [2021-12-21 13:14:08,921 INFO L226 Difference]: Without dead ends: 61 [2021-12-21 13:14:08,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:14:08,923 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 76 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 [2021-12-21 13:14:08,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 76 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:14:08,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-21 13:14:08,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-12-21 13:14:08,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 48 states have (on average 1.3125) internal successors, (63), 53 states have internal predecessors, (63), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-21 13:14:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2021-12-21 13:14:08,929 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 28 [2021-12-21 13:14:08,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:14:08,930 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2021-12-21 13:14:08,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-12-21 13:14:08,930 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2021-12-21 13:14:08,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-21 13:14:08,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:14:08,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:14:08,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 13:14:08,932 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:14:08,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:14:08,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1802696392, now seen corresponding path program 1 times [2021-12-21 13:14:08,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:14:08,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878536359] [2021-12-21 13:14:08,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:14:08,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:14:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:08,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 13:14:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:08,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 13:14:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:14:08,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:14:08,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878536359] [2021-12-21 13:14:08,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878536359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:14:08,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:14:08,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:14:08,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601253783] [2021-12-21 13:14:08,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:14:08,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:14:08,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:14:08,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:14:08,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:14:08,988 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-21 13:14:09,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:14:09,018 INFO L93 Difference]: Finished difference Result 154 states and 198 transitions. [2021-12-21 13:14:09,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:14:09,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 33 [2021-12-21 13:14:09,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:14:09,021 INFO L225 Difference]: With dead ends: 154 [2021-12-21 13:14:09,021 INFO L226 Difference]: Without dead ends: 100 [2021-12-21 13:14:09,022 INFO L932 BasicCegarLoop]: 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 [2021-12-21 13:14:09,025 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 51 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:14:09,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 138 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:14:09,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-12-21 13:14:09,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2021-12-21 13:14:09,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 76 states have (on average 1.3026315789473684) internal successors, (99), 83 states have internal predecessors, (99), 11 states have call successors, (11), 10 states have call predecessors, (11), 10 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2021-12-21 13:14:09,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 123 transitions. [2021-12-21 13:14:09,042 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 123 transitions. Word has length 33 [2021-12-21 13:14:09,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:14:09,042 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 123 transitions. [2021-12-21 13:14:09,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-21 13:14:09,042 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 123 transitions. [2021-12-21 13:14:09,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-21 13:14:09,045 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:14:09,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:14:09,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 13:14:09,045 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:14:09,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:14:09,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1480574080, now seen corresponding path program 1 times [2021-12-21 13:14:09,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:14:09,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567888625] [2021-12-21 13:14:09,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:14:09,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:14:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 13:14:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 13:14:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:14:09,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:14:09,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567888625] [2021-12-21 13:14:09,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567888625] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:14:09,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:14:09,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:14:09,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923461206] [2021-12-21 13:14:09,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:14:09,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:14:09,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:14:09,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:14:09,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:14:09,133 INFO L87 Difference]: Start difference. First operand 98 states and 123 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 13:14:09,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:14:09,199 INFO L93 Difference]: Finished difference Result 280 states and 364 transitions. [2021-12-21 13:14:09,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 13:14:09,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2021-12-21 13:14:09,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:14:09,201 INFO L225 Difference]: With dead ends: 280 [2021-12-21 13:14:09,201 INFO L226 Difference]: Without dead ends: 189 [2021-12-21 13:14:09,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:14:09,202 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 43 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:14:09,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 366 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:14:09,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-12-21 13:14:09,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2021-12-21 13:14:09,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 140 states have (on average 1.2857142857142858) internal successors, (180), 153 states have internal predecessors, (180), 22 states have call successors, (22), 20 states have call predecessors, (22), 20 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2021-12-21 13:14:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 230 transitions. [2021-12-21 13:14:09,214 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 230 transitions. Word has length 39 [2021-12-21 13:14:09,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:14:09,215 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 230 transitions. [2021-12-21 13:14:09,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 13:14:09,215 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 230 transitions. [2021-12-21 13:14:09,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-21 13:14:09,216 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:14:09,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:14:09,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 13:14:09,216 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:14:09,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:14:09,216 INFO L85 PathProgramCache]: Analyzing trace with hash -370028836, now seen corresponding path program 1 times [2021-12-21 13:14:09,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:14:09,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498480582] [2021-12-21 13:14:09,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:14:09,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:14:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:14:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 13:14:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 13:14:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:14:09,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:14:09,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498480582] [2021-12-21 13:14:09,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498480582] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:14:09,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:14:09,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:14:09,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119133002] [2021-12-21 13:14:09,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:14:09,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:14:09,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:14:09,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:14:09,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:14:09,262 INFO L87 Difference]: Start difference. First operand 183 states and 230 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 13:14:09,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:14:09,397 INFO L93 Difference]: Finished difference Result 191 states and 239 transitions. [2021-12-21 13:14:09,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 13:14:09,397 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2021-12-21 13:14:09,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:14:09,399 INFO L225 Difference]: With dead ends: 191 [2021-12-21 13:14:09,399 INFO L226 Difference]: Without dead ends: 189 [2021-12-21 13:14:09,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:14:09,400 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 85 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:14:09,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 212 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:14:09,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-12-21 13:14:09,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2021-12-21 13:14:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 140 states have (on average 1.2785714285714285) internal successors, (179), 153 states have internal predecessors, (179), 22 states have call successors, (22), 20 states have call predecessors, (22), 20 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2021-12-21 13:14:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 229 transitions. [2021-12-21 13:14:09,433 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 229 transitions. Word has length 43 [2021-12-21 13:14:09,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:14:09,433 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 229 transitions. [2021-12-21 13:14:09,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 1 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 13:14:09,434 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 229 transitions. [2021-12-21 13:14:09,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-21 13:14:09,434 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:14:09,435 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:14:09,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 13:14:09,435 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:14:09,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:14:09,435 INFO L85 PathProgramCache]: Analyzing trace with hash 6242565, now seen corresponding path program 1 times [2021-12-21 13:14:09,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:14:09,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797280424] [2021-12-21 13:14:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:14:09,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:14:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:14:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 13:14:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:14:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 13:14:09,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:14:09,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797280424] [2021-12-21 13:14:09,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797280424] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:14:09,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:14:09,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:14:09,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848911306] [2021-12-21 13:14:09,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:14:09,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:14:09,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:14:09,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:14:09,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:14:09,481 INFO L87 Difference]: Start difference. First operand 183 states and 229 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 13:14:09,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:14:09,662 INFO L93 Difference]: Finished difference Result 403 states and 517 transitions. [2021-12-21 13:14:09,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:14:09,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2021-12-21 13:14:09,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:14:09,666 INFO L225 Difference]: With dead ends: 403 [2021-12-21 13:14:09,666 INFO L226 Difference]: Without dead ends: 227 [2021-12-21 13:14:09,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:14:09,682 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 78 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:14:09,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 209 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:14:09,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-12-21 13:14:09,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 189. [2021-12-21 13:14:09,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 146 states have (on average 1.2671232876712328) internal successors, (185), 159 states have internal predecessors, (185), 22 states have call successors, (22), 20 states have call predecessors, (22), 20 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2021-12-21 13:14:09,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 235 transitions. [2021-12-21 13:14:09,701 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 235 transitions. Word has length 49 [2021-12-21 13:14:09,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:14:09,702 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 235 transitions. [2021-12-21 13:14:09,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 13:14:09,702 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 235 transitions. [2021-12-21 13:14:09,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-21 13:14:09,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:14:09,704 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:14:09,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 13:14:09,704 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:14:09,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:14:09,705 INFO L85 PathProgramCache]: Analyzing trace with hash -127770941, now seen corresponding path program 1 times [2021-12-21 13:14:09,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:14:09,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107342155] [2021-12-21 13:14:09,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:14:09,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:14:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:14:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 13:14:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:14:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 13:14:09,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:14:09,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107342155] [2021-12-21 13:14:09,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107342155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:14:09,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:14:09,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:14:09,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702712464] [2021-12-21 13:14:09,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:14:09,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:14:09,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:14:09,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:14:09,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:14:09,778 INFO L87 Difference]: Start difference. First operand 189 states and 235 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 13:14:09,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:14:09,911 INFO L93 Difference]: Finished difference Result 421 states and 537 transitions. [2021-12-21 13:14:09,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:14:09,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2021-12-21 13:14:09,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:14:09,913 INFO L225 Difference]: With dead ends: 421 [2021-12-21 13:14:09,913 INFO L226 Difference]: Without dead ends: 239 [2021-12-21 13:14:09,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:14:09,914 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 137 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:14:09,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 173 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:14:09,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-12-21 13:14:09,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 193. [2021-12-21 13:14:09,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 150 states have (on average 1.26) internal successors, (189), 163 states have internal predecessors, (189), 22 states have call successors, (22), 20 states have call predecessors, (22), 20 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2021-12-21 13:14:09,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 239 transitions. [2021-12-21 13:14:09,923 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 239 transitions. Word has length 49 [2021-12-21 13:14:09,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:14:09,923 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 239 transitions. [2021-12-21 13:14:09,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 13:14:09,923 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 239 transitions. [2021-12-21 13:14:09,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-21 13:14:09,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:14:09,924 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:14:09,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 13:14:09,924 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:14:09,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:14:09,925 INFO L85 PathProgramCache]: Analyzing trace with hash -65731327, now seen corresponding path program 1 times [2021-12-21 13:14:09,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:14:09,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272319267] [2021-12-21 13:14:09,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:14:09,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:14:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 13:14:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 13:14:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 13:14:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:09,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 13:14:09,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:14:09,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272319267] [2021-12-21 13:14:09,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272319267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:14:09,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:14:09,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:14:09,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300624071] [2021-12-21 13:14:09,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:14:09,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 13:14:09,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:14:09,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 13:14:09,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 13:14:09,959 INFO L87 Difference]: Start difference. First operand 193 states and 239 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 13:14:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:14:10,039 INFO L93 Difference]: Finished difference Result 459 states and 574 transitions. [2021-12-21 13:14:10,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:14:10,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2021-12-21 13:14:10,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:14:10,041 INFO L225 Difference]: With dead ends: 459 [2021-12-21 13:14:10,041 INFO L226 Difference]: Without dead ends: 273 [2021-12-21 13:14:10,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:14:10,042 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 85 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:14:10,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 119 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:14:10,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-12-21 13:14:10,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2021-12-21 13:14:10,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 212 states have (on average 1.2311320754716981) internal successors, (261), 227 states have internal predecessors, (261), 32 states have call successors, (32), 30 states have call predecessors, (32), 28 states have return successors, (39), 30 states have call predecessors, (39), 32 states have call successors, (39) [2021-12-21 13:14:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 332 transitions. [2021-12-21 13:14:10,051 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 332 transitions. Word has length 49 [2021-12-21 13:14:10,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:14:10,052 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 332 transitions. [2021-12-21 13:14:10,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 13:14:10,052 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 332 transitions. [2021-12-21 13:14:10,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-21 13:14:10,052 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:14:10,052 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:14:10,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 13:14:10,053 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:14:10,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:14:10,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2075150747, now seen corresponding path program 1 times [2021-12-21 13:14:10,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:14:10,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136586353] [2021-12-21 13:14:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:14:10,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:14:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:10,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 13:14:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:10,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 13:14:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:10,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 13:14:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:10,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 13:14:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:10,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 13:14:10,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:14:10,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136586353] [2021-12-21 13:14:10,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136586353] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:14:10,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942213917] [2021-12-21 13:14:10,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:14:10,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:14:10,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:14:10,132 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:14:10,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 13:14:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:14:10,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 13:14:10,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:14:10,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:14:10,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:14:10,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942213917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:14:10,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:14:10,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-12-21 13:14:10,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420312710] [2021-12-21 13:14:10,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:14:10,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:14:10,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:14:10,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:14:10,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:14:10,469 INFO L87 Difference]: Start difference. First operand 273 states and 332 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-21 13:14:10,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:14:10,578 INFO L93 Difference]: Finished difference Result 547 states and 669 transitions. [2021-12-21 13:14:10,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:14:10,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 53 [2021-12-21 13:14:10,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:14:10,580 INFO L225 Difference]: With dead ends: 547 [2021-12-21 13:14:10,580 INFO L226 Difference]: Without dead ends: 281 [2021-12-21 13:14:10,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-12-21 13:14:10,584 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 71 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:14:10,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 730 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:14:10,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-12-21 13:14:10,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 271. [2021-12-21 13:14:10,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 224 states have internal predecessors, (255), 32 states have call successors, (32), 30 states have call predecessors, (32), 28 states have return successors, (35), 30 states have call predecessors, (35), 32 states have call successors, (35) [2021-12-21 13:14:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 322 transitions. [2021-12-21 13:14:10,607 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 322 transitions. Word has length 53 [2021-12-21 13:14:10,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:14:10,607 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 322 transitions. [2021-12-21 13:14:10,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-21 13:14:10,608 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 322 transitions. [2021-12-21 13:14:10,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-21 13:14:10,608 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:14:10,609 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:14:10,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 13:14:10,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-21 13:14:10,828 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:14:10,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:14:10,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1462219428, now seen corresponding path program 1 times [2021-12-21 13:14:10,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:14:10,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125553158] [2021-12-21 13:14:10,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:14:10,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:14:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 13:14:10,845 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 13:14:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 13:14:10,870 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 13:14:10,871 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 13:14:10,871 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 13:14:10,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 13:14:10,875 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:14:10,877 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 13:14:10,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 01:14:10 BoogieIcfgContainer [2021-12-21 13:14:10,915 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 13:14:10,915 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 13:14:10,915 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 13:14:10,915 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 13:14:10,916 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:14:08" (3/4) ... [2021-12-21 13:14:10,917 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-21 13:14:10,964 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 13:14:10,964 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 13:14:10,965 INFO L158 Benchmark]: Toolchain (without parser) took 3548.56ms. Allocated memory was 169.9MB in the beginning and 230.7MB in the end (delta: 60.8MB). Free memory was 137.9MB in the beginning and 147.4MB in the end (delta: -9.5MB). Peak memory consumption was 51.3MB. Max. memory is 16.1GB. [2021-12-21 13:14:10,965 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 88.1MB. Free memory was 45.4MB in the beginning and 45.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 13:14:10,965 INFO L158 Benchmark]: CACSL2BoogieTranslator took 407.83ms. Allocated memory is still 169.9MB. Free memory was 137.5MB in the beginning and 135.2MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 13:14:10,965 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.30ms. Allocated memory is still 169.9MB. Free memory was 135.2MB in the beginning and 133.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 13:14:10,965 INFO L158 Benchmark]: Boogie Preprocessor took 18.85ms. Allocated memory is still 169.9MB. Free memory was 133.1MB in the beginning and 131.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 13:14:10,966 INFO L158 Benchmark]: RCFGBuilder took 381.34ms. Allocated memory is still 169.9MB. Free memory was 131.5MB in the beginning and 115.3MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-21 13:14:10,966 INFO L158 Benchmark]: TraceAbstraction took 2641.88ms. Allocated memory was 169.9MB in the beginning and 230.7MB in the end (delta: 60.8MB). Free memory was 115.3MB in the beginning and 154.7MB in the end (delta: -39.4MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2021-12-21 13:14:10,966 INFO L158 Benchmark]: Witness Printer took 49.06ms. Allocated memory is still 230.7MB. Free memory was 154.7MB in the beginning and 147.4MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-21 13:14:10,967 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 88.1MB. Free memory was 45.4MB in the beginning and 45.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 407.83ms. Allocated memory is still 169.9MB. Free memory was 137.5MB in the beginning and 135.2MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.30ms. Allocated memory is still 169.9MB. Free memory was 135.2MB in the beginning and 133.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.85ms. Allocated memory is still 169.9MB. Free memory was 133.1MB in the beginning and 131.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 381.34ms. Allocated memory is still 169.9MB. Free memory was 131.5MB in the beginning and 115.3MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2641.88ms. Allocated memory was 169.9MB in the beginning and 230.7MB in the end (delta: 60.8MB). Free memory was 115.3MB in the beginning and 154.7MB in the end (delta: -39.4MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * Witness Printer took 49.06ms. Allocated memory is still 230.7MB. Free memory was 154.7MB in the beginning and 147.4MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. 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: 897]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L490] int waterLevel = 1; [L491] int methaneLevelCritical = 0; [L588] int pumpRunning = 0; [L589] int systemActive = 1; [L759] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L835] int retValue_acc ; [L836] int tmp ; [L840] FCALL select_helpers() [L841] FCALL select_features() [L842] CALL, EXPR valid_product() [L884] int retValue_acc ; [L887] retValue_acc = 1 [L888] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L842] RET, EXPR valid_product() [L842] tmp = valid_product() [L844] COND TRUE \read(tmp) [L846] FCALL setup() [L847] CALL runTest() [L826] CALL test() [L421] int splverifierCounter ; [L422] int tmp ; [L423] int tmp___0 ; [L424] int tmp___1 ; [L425] int tmp___2 ; [L428] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L430] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L432] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L438] tmp = __VERIFIER_nondet_int() [L440] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L442] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L508] COND TRUE waterLevel < 2 [L509] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L442] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L448] tmp___0 = __VERIFIER_nondet_int() [L450] 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] [L458] tmp___2 = __VERIFIER_nondet_int() [L460] 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] [L473] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L596] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L603] COND TRUE \read(systemActive) [L605] CALL processEnvironment() [L625] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L628] COND TRUE ! pumpRunning [L630] CALL, EXPR isHighWaterLevel() [L740] int retValue_acc ; [L741] int tmp ; [L742] int tmp___0 ; [L746] CALL, EXPR isHighWaterSensorDry() [L570] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L573] COND FALSE !(waterLevel < 2) [L577] retValue_acc = 0 [L578] 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] [L746] RET, EXPR isHighWaterSensorDry() [L746] tmp = isHighWaterSensorDry() [L748] COND FALSE !(\read(tmp)) [L751] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L753] retValue_acc = tmp___0 [L754] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L630] RET, EXPR isHighWaterLevel() [L630] tmp = isHighWaterLevel() [L632] COND TRUE \read(tmp) [L634] CALL activatePump() [L659] int tmp ; [L663] CALL, EXPR isMethaneAlarm() [L684] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L688] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L529] int retValue_acc ; [L532] retValue_acc = methaneLevelCritical [L533] 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] [L688] 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] [L688] retValue_acc = isMethaneLevelCritical() [L690] 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] [L663] RET, EXPR isMethaneAlarm() [L663] tmp = isMethaneAlarm() [L665] COND FALSE !(\read(tmp)) [L669] CALL activatePump__wrappee__highWaterSensor() [L653] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L669] RET activatePump__wrappee__highWaterSensor() [L634] RET activatePump() [L605] RET processEnvironment() [L611] CALL __utac_acc__Specification1_spec__1() [L903] int tmp ; [L904] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L908] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L529] int retValue_acc ; [L532] retValue_acc = methaneLevelCritical [L533] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=2] [L908] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L908] tmp = isMethaneLevelCritical() [L910] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L611] RET __utac_acc__Specification1_spec__1() [L473] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L430] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L432] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L438] tmp = __VERIFIER_nondet_int() [L440] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L448] tmp___0 = __VERIFIER_nondet_int() [L450] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___2=1, waterLevel=2] [L452] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L520] COND FALSE !(\read(methaneLevelCritical)) [L523] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L452] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___2=1, waterLevel=2] [L458] tmp___2 = __VERIFIER_nondet_int() [L460] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=-1, tmp___2=1, waterLevel=2] [L473] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L596] COND TRUE \read(pumpRunning) [L598] CALL lowerWaterLevel() [L496] COND TRUE waterLevel > 0 [L497] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L598] RET lowerWaterLevel() [L603] COND TRUE \read(systemActive) [L605] CALL processEnvironment() [L625] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L628] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L643] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L605] RET processEnvironment() [L611] CALL __utac_acc__Specification1_spec__1() [L903] int tmp ; [L904] int tmp___0 ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L908] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L529] int retValue_acc ; [L532] retValue_acc = methaneLevelCritical [L533] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L908] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L908] tmp = isMethaneLevelCritical() [L910] COND TRUE \read(tmp) [L912] CALL, EXPR isPumpRunning() [L695] int retValue_acc ; [L698] retValue_acc = pumpRunning [L699] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L912] RET, EXPR isPumpRunning() [L912] tmp___0 = isPumpRunning() [L914] COND TRUE \read(tmp___0) [L916] CALL __automaton_fail() [L897] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 642 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 622 mSDsluCounter, 2260 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1368 mSDsCounter, 118 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 628 IncrementalHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 118 mSolverCounterUnsat, 892 mSDtfsCounter, 628 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=273occurred in iteration=9, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 108 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 524 NumberOfCodeBlocks, 524 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 432 ConstructedInterpolants, 0 QuantifiedInterpolants, 865 SizeOfPredicates, 4 NumberOfNonLiveVariables, 365 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 13/15 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! [2021-12-21 13:14:11,009 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