./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec4_product34.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 2a152d19fa28b0169076b34a0513a75c542cc933ab1c694f300fdf3273b66e93 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:20:03,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:20:03,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:20:03,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:20:03,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:20:03,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:20:03,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:20:03,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:20:03,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:20:03,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:20:03,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:20:03,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:20:03,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:20:03,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:20:03,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:20:03,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:20:03,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:20:03,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:20:03,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:20:03,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:20:03,854 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:20:03,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:20:03,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:20:03,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:20:03,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:20:03,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:20:03,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:20:03,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:20:03,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:20:03,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:20:03,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:20:03,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:20:03,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:20:03,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:20:03,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:20:03,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:20:03,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:20:03,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:20:03,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:20:03,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:20:03,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:20:03,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:20:03,875 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:20:03,907 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:20:03,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:20:03,908 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:20:03,908 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:20:03,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:20:03,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:20:03,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:20:03,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:20:03,910 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:20:03,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:20:03,911 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:20:03,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:20:03,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:20:03,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:20:03,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:20:03,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:20:03,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:20:03,912 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:20:03,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:20:03,912 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:20:03,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:20:03,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:20:03,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:20:03,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:20:03,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:20:03,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:20:03,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:20:03,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:20:03,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:20:03,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:20:03,915 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:20:03,915 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:20:03,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:20:03,915 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a152d19fa28b0169076b34a0513a75c542cc933ab1c694f300fdf3273b66e93 [2022-07-12 06:20:04,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:20:04,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:20:04,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:20:04,221 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:20:04,222 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:20:04,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c [2022-07-12 06:20:04,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16da89799/b25f6f802fbc47f798188ea57ea15b16/FLAGed5482f56 [2022-07-12 06:20:04,807 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:20:04,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c [2022-07-12 06:20:04,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16da89799/b25f6f802fbc47f798188ea57ea15b16/FLAGed5482f56 [2022-07-12 06:20:05,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16da89799/b25f6f802fbc47f798188ea57ea15b16 [2022-07-12 06:20:05,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:20:05,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:20:05,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:20:05,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:20:05,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:20:05,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:20:05" (1/1) ... [2022-07-12 06:20:05,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ae3aff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:20:05, skipping insertion in model container [2022-07-12 06:20:05,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:20:05" (1/1) ... [2022-07-12 06:20:05,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:20:05,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:20:05,548 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c[8026,8039] [2022-07-12 06:20:05,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:20:05,667 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:20:05,719 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c[8026,8039] [2022-07-12 06:20:05,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:20:05,783 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:20:05,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:20:05 WrapperNode [2022-07-12 06:20:05,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:20:05,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:20:05,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:20:05,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:20:05,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:20:05" (1/1) ... [2022-07-12 06:20:05,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:20:05" (1/1) ... [2022-07-12 06:20:05,848 INFO L137 Inliner]: procedures = 53, calls = 150, calls flagged for inlining = 22, calls inlined = 18, statements flattened = 226 [2022-07-12 06:20:05,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:20:05,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:20:05,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:20:05,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:20:05,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:20:05" (1/1) ... [2022-07-12 06:20:05,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:20:05" (1/1) ... [2022-07-12 06:20:05,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:20:05" (1/1) ... [2022-07-12 06:20:05,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:20:05" (1/1) ... [2022-07-12 06:20:05,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:20:05" (1/1) ... [2022-07-12 06:20:05,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:20:05" (1/1) ... [2022-07-12 06:20:05,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:20:05" (1/1) ... [2022-07-12 06:20:05,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:20:05,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:20:05,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:20:05,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:20:05,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:20:05" (1/1) ... [2022-07-12 06:20:05,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:20:05,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:20:05,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 06:20:05,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 06:20:05,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:20:05,976 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-07-12 06:20:05,976 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-07-12 06:20:05,976 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-12 06:20:05,976 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-12 06:20:05,976 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-12 06:20:05,976 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-12 06:20:05,977 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-07-12 06:20:05,977 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-07-12 06:20:05,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:20:05,977 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-07-12 06:20:05,977 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-07-12 06:20:05,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:20:05,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:20:06,069 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:20:06,070 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:20:06,388 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:20:06,394 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:20:06,397 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 06:20:06,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:20:06 BoogieIcfgContainer [2022-07-12 06:20:06,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:20:06,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:20:06,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:20:06,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:20:06,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:20:05" (1/3) ... [2022-07-12 06:20:06,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e0944e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:20:06, skipping insertion in model container [2022-07-12 06:20:06,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:20:05" (2/3) ... [2022-07-12 06:20:06,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e0944e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:20:06, skipping insertion in model container [2022-07-12 06:20:06,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:20:06" (3/3) ... [2022-07-12 06:20:06,409 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product34.cil.c [2022-07-12 06:20:06,423 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:20:06,424 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:20:06,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:20:06,494 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1c77745e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@45982142 [2022-07-12 06:20:06,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:20:06,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 62 states have internal predecessors, (79), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-12 06:20:06,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-12 06:20:06,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:20:06,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:20:06,575 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:20:06,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:20:06,582 INFO L85 PathProgramCache]: Analyzing trace with hash -389991902, now seen corresponding path program 1 times [2022-07-12 06:20:06,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:20:06,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651182462] [2022-07-12 06:20:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:20:06,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:20:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:20:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:20:06,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:20:06,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651182462] [2022-07-12 06:20:06,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651182462] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:20:06,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:20:06,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 06:20:06,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856276907] [2022-07-12 06:20:06,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:20:06,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 06:20:06,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:20:06,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 06:20:06,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 06:20:06,883 INFO L87 Difference]: Start difference. First operand has 71 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 62 states have internal predecessors, (79), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:20:06,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:20:06,921 INFO L93 Difference]: Finished difference Result 134 states and 185 transitions. [2022-07-12 06:20:06,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 06:20:06,924 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-12 06:20:06,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:20:06,933 INFO L225 Difference]: With dead ends: 134 [2022-07-12 06:20:06,933 INFO L226 Difference]: Without dead ends: 62 [2022-07-12 06:20:06,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 06:20:06,945 INFO L413 NwaCegarLoop]: 89 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, 89 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:20:06,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:20:06,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-07-12 06:20:06,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-07-12 06:20:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 54 states have internal predecessors, (65), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-12 06:20:06,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2022-07-12 06:20:06,996 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 19 [2022-07-12 06:20:06,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:20:06,997 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2022-07-12 06:20:06,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:20:06,998 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2022-07-12 06:20:07,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-12 06:20:07,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:20:07,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:20:07,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 06:20:07,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:20:07,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:20:07,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1183721525, now seen corresponding path program 1 times [2022-07-12 06:20:07,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:20:07,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552451117] [2022-07-12 06:20:07,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:20:07,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:20:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:20:07,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:20:07,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:20:07,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552451117] [2022-07-12 06:20:07,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552451117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:20:07,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:20:07,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:20:07,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275127359] [2022-07-12 06:20:07,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:20:07,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:20:07,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:20:07,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:20:07,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:20:07,093 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:20:07,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:20:07,114 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2022-07-12 06:20:07,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:20:07,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-12 06:20:07,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:20:07,119 INFO L225 Difference]: With dead ends: 89 [2022-07-12 06:20:07,121 INFO L226 Difference]: Without dead ends: 53 [2022-07-12 06:20:07,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:20:07,126 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 13 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:20:07,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 117 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:20:07,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-07-12 06:20:07,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-07-12 06:20:07,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 48 states have internal predecessors, (58), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-12 06:20:07,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2022-07-12 06:20:07,140 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 20 [2022-07-12 06:20:07,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:20:07,142 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2022-07-12 06:20:07,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:20:07,143 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2022-07-12 06:20:07,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-12 06:20:07,144 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:20:07,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:20:07,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 06:20:07,149 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:20:07,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:20:07,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1954907741, now seen corresponding path program 1 times [2022-07-12 06:20:07,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:20:07,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439811976] [2022-07-12 06:20:07,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:20:07,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:20:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:20:07,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:20:07,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:20:07,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439811976] [2022-07-12 06:20:07,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439811976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:20:07,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:20:07,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:20:07,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178803475] [2022-07-12 06:20:07,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:20:07,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:20:07,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:20:07,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:20:07,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:20:07,242 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:20:07,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:20:07,269 INFO L93 Difference]: Finished difference Result 99 states and 130 transitions. [2022-07-12 06:20:07,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:20:07,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-07-12 06:20:07,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:20:07,274 INFO L225 Difference]: With dead ends: 99 [2022-07-12 06:20:07,274 INFO L226 Difference]: Without dead ends: 53 [2022-07-12 06:20:07,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:20:07,279 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 62 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:20:07,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 66 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:20:07,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-07-12 06:20:07,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-07-12 06:20:07,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 48 states have internal predecessors, (57), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-12 06:20:07,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2022-07-12 06:20:07,289 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 25 [2022-07-12 06:20:07,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:20:07,290 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2022-07-12 06:20:07,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:20:07,290 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2022-07-12 06:20:07,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-12 06:20:07,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:20:07,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:20:07,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 06:20:07,292 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:20:07,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:20:07,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1084435248, now seen corresponding path program 1 times [2022-07-12 06:20:07,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:20:07,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980702407] [2022-07-12 06:20:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:20:07,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:20:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:20:07,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:20:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:20:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:20:07,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:20:07,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980702407] [2022-07-12 06:20:07,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980702407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:20:07,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:20:07,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 06:20:07,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35272346] [2022-07-12 06:20:07,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:20:07,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:20:07,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:20:07,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:20:07,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:20:07,367 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 06:20:07,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:20:07,387 INFO L93 Difference]: Finished difference Result 134 states and 174 transitions. [2022-07-12 06:20:07,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:20:07,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-07-12 06:20:07,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:20:07,389 INFO L225 Difference]: With dead ends: 134 [2022-07-12 06:20:07,389 INFO L226 Difference]: Without dead ends: 88 [2022-07-12 06:20:07,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:20:07,390 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 40 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 125 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 [2022-07-12 06:20:07,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 125 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:20:07,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-07-12 06:20:07,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2022-07-12 06:20:07,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 69 states have (on average 1.318840579710145) internal successors, (91), 75 states have internal predecessors, (91), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-07-12 06:20:07,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 109 transitions. [2022-07-12 06:20:07,406 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 109 transitions. Word has length 30 [2022-07-12 06:20:07,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:20:07,406 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 109 transitions. [2022-07-12 06:20:07,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 06:20:07,407 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 109 transitions. [2022-07-12 06:20:07,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-12 06:20:07,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:20:07,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:20:07,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 06:20:07,409 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:20:07,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:20:07,410 INFO L85 PathProgramCache]: Analyzing trace with hash -130710181, now seen corresponding path program 1 times [2022-07-12 06:20:07,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:20:07,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667413052] [2022-07-12 06:20:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:20:07,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:20:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:20:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:20:07,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:20:07,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667413052] [2022-07-12 06:20:07,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667413052] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:20:07,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:20:07,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 06:20:07,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623182336] [2022-07-12 06:20:07,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:20:07,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:20:07,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:20:07,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:20:07,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:20:07,498 INFO L87 Difference]: Start difference. First operand 86 states and 109 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:20:07,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:20:07,544 INFO L93 Difference]: Finished difference Result 234 states and 312 transitions. [2022-07-12 06:20:07,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:20:07,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-07-12 06:20:07,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:20:07,547 INFO L225 Difference]: With dead ends: 234 [2022-07-12 06:20:07,547 INFO L226 Difference]: Without dead ends: 155 [2022-07-12 06:20:07,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 06:20:07,551 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 36 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:20:07,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 122 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:20:07,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-07-12 06:20:07,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2022-07-12 06:20:07,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 124 states have (on average 1.314516129032258) internal successors, (163), 132 states have internal predecessors, (163), 15 states have call successors, (15), 15 states have call predecessors, (15), 13 states have return successors, (21), 13 states have call predecessors, (21), 15 states have call successors, (21) [2022-07-12 06:20:07,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 199 transitions. [2022-07-12 06:20:07,581 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 199 transitions. Word has length 34 [2022-07-12 06:20:07,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:20:07,584 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 199 transitions. [2022-07-12 06:20:07,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:20:07,584 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 199 transitions. [2022-07-12 06:20:07,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-12 06:20:07,587 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:20:07,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:20:07,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 06:20:07,588 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:20:07,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:20:07,589 INFO L85 PathProgramCache]: Analyzing trace with hash 880407069, now seen corresponding path program 1 times [2022-07-12 06:20:07,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:20:07,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462243556] [2022-07-12 06:20:07,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:20:07,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:20:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:20:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:20:07,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:20:07,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462243556] [2022-07-12 06:20:07,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462243556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:20:07,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:20:07,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:20:07,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911423112] [2022-07-12 06:20:07,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:20:07,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:20:07,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:20:07,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:20:07,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:20:07,662 INFO L87 Difference]: Start difference. First operand 153 states and 199 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:20:07,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:20:07,711 INFO L93 Difference]: Finished difference Result 329 states and 435 transitions. [2022-07-12 06:20:07,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 06:20:07,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-07-12 06:20:07,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:20:07,714 INFO L225 Difference]: With dead ends: 329 [2022-07-12 06:20:07,714 INFO L226 Difference]: Without dead ends: 183 [2022-07-12 06:20:07,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:20:07,716 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 50 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:20:07,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 290 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:20:07,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-07-12 06:20:07,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 159. [2022-07-12 06:20:07,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 130 states have (on average 1.3) internal successors, (169), 138 states have internal predecessors, (169), 15 states have call successors, (15), 15 states have call predecessors, (15), 13 states have return successors, (21), 13 states have call predecessors, (21), 15 states have call successors, (21) [2022-07-12 06:20:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 205 transitions. [2022-07-12 06:20:07,734 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 205 transitions. Word has length 34 [2022-07-12 06:20:07,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:20:07,735 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 205 transitions. [2022-07-12 06:20:07,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:20:07,735 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 205 transitions. [2022-07-12 06:20:07,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-12 06:20:07,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:20:07,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:20:07,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:20:07,737 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:20:07,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:20:07,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1138572507, now seen corresponding path program 1 times [2022-07-12 06:20:07,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:20:07,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180913702] [2022-07-12 06:20:07,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:20:07,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:20:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:20:07,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:20:07,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:20:07,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180913702] [2022-07-12 06:20:07,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180913702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:20:07,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:20:07,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:20:07,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827419593] [2022-07-12 06:20:07,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:20:07,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:20:07,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:20:07,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:20:07,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:20:07,781 INFO L87 Difference]: Start difference. First operand 159 states and 205 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:20:07,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:20:07,831 INFO L93 Difference]: Finished difference Result 308 states and 399 transitions. [2022-07-12 06:20:07,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 06:20:07,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-07-12 06:20:07,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:20:07,833 INFO L225 Difference]: With dead ends: 308 [2022-07-12 06:20:07,833 INFO L226 Difference]: Without dead ends: 156 [2022-07-12 06:20:07,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:20:07,835 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 128 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:20:07,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 199 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:20:07,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-07-12 06:20:07,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2022-07-12 06:20:07,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 105 states have (on average 1.276190476190476) internal successors, (134), 112 states have internal predecessors, (134), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (14), 11 states have call predecessors, (14), 12 states have call successors, (14) [2022-07-12 06:20:07,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 160 transitions. [2022-07-12 06:20:07,853 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 160 transitions. Word has length 34 [2022-07-12 06:20:07,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:20:07,853 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 160 transitions. [2022-07-12 06:20:07,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 06:20:07,853 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 160 transitions. [2022-07-12 06:20:07,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-12 06:20:07,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:20:07,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:20:07,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:20:07,855 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:20:07,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:20:07,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1976905576, now seen corresponding path program 1 times [2022-07-12 06:20:07,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:20:07,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13161702] [2022-07-12 06:20:07,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:20:07,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:20:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:20:07,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 06:20:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:20:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:20:07,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:20:07,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13161702] [2022-07-12 06:20:07,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13161702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:20:07,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:20:07,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:20:07,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461134580] [2022-07-12 06:20:07,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:20:07,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:20:07,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:20:07,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:20:07,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:20:07,946 INFO L87 Difference]: Start difference. First operand 129 states and 160 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 06:20:08,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:20:08,090 INFO L93 Difference]: Finished difference Result 327 states and 429 transitions. [2022-07-12 06:20:08,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:20:08,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-07-12 06:20:08,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:20:08,095 INFO L225 Difference]: With dead ends: 327 [2022-07-12 06:20:08,095 INFO L226 Difference]: Without dead ends: 205 [2022-07-12 06:20:08,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:20:08,097 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 136 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:20:08,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 356 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:20:08,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-12 06:20:08,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 195. [2022-07-12 06:20:08,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 157 states have (on average 1.2611464968152866) internal successors, (198), 168 states have internal predecessors, (198), 18 states have call successors, (18), 18 states have call predecessors, (18), 19 states have return successors, (29), 19 states have call predecessors, (29), 18 states have call successors, (29) [2022-07-12 06:20:08,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 245 transitions. [2022-07-12 06:20:08,115 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 245 transitions. Word has length 36 [2022-07-12 06:20:08,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:20:08,117 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 245 transitions. [2022-07-12 06:20:08,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 06:20:08,117 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 245 transitions. [2022-07-12 06:20:08,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 06:20:08,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:20:08,120 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 06:20:08,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:20:08,120 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:20:08,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:20:08,121 INFO L85 PathProgramCache]: Analyzing trace with hash -993180632, now seen corresponding path program 1 times [2022-07-12 06:20:08,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:20:08,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814176320] [2022-07-12 06:20:08,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:20:08,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:20:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:20:08,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:20:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:20:08,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 06:20:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:20:08,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 06:20:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:20:08,224 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:20:08,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:20:08,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814176320] [2022-07-12 06:20:08,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814176320] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:20:08,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086921991] [2022-07-12 06:20:08,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:20:08,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:20:08,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:20:08,226 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:20:08,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 06:20:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:20:08,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 06:20:08,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:20:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:20:08,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:20:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:20:08,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086921991] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:20:08,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:20:08,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 8 [2022-07-12 06:20:08,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788978773] [2022-07-12 06:20:08,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:20:08,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 06:20:08,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:20:08,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 06:20:08,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:20:08,590 INFO L87 Difference]: Start difference. First operand 195 states and 245 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 06:20:08,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:20:08,967 INFO L93 Difference]: Finished difference Result 514 states and 688 transitions. [2022-07-12 06:20:08,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 06:20:08,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 63 [2022-07-12 06:20:08,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:20:08,973 INFO L225 Difference]: With dead ends: 514 [2022-07-12 06:20:08,973 INFO L226 Difference]: Without dead ends: 362 [2022-07-12 06:20:08,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-07-12 06:20:08,974 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 183 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:20:08,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 466 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:20:08,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-07-12 06:20:08,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 332. [2022-07-12 06:20:08,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 268 states have (on average 1.2313432835820894) internal successors, (330), 288 states have internal predecessors, (330), 31 states have call successors, (31), 27 states have call predecessors, (31), 32 states have return successors, (58), 28 states have call predecessors, (58), 31 states have call successors, (58) [2022-07-12 06:20:08,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 419 transitions. [2022-07-12 06:20:08,999 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 419 transitions. Word has length 63 [2022-07-12 06:20:09,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:20:09,000 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 419 transitions. [2022-07-12 06:20:09,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 06:20:09,000 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 419 transitions. [2022-07-12 06:20:09,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-12 06:20:09,002 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:20:09,003 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:20:09,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 06:20:09,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:20:09,228 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:20:09,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:20:09,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1193836449, now seen corresponding path program 2 times [2022-07-12 06:20:09,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:20:09,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692797140] [2022-07-12 06:20:09,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:20:09,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:20:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 06:20:09,261 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 06:20:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 06:20:09,315 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 06:20:09,315 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 06:20:09,316 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 06:20:09,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 06:20:09,321 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:20:09,324 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 06:20:09,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 06:20:09 BoogieIcfgContainer [2022-07-12 06:20:09,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 06:20:09,407 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 06:20:09,407 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 06:20:09,407 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 06:20:09,407 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:20:06" (3/4) ... [2022-07-12 06:20:09,409 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 06:20:09,477 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 06:20:09,477 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 06:20:09,478 INFO L158 Benchmark]: Toolchain (without parser) took 4209.43ms. Allocated memory was 109.1MB in the beginning and 155.2MB in the end (delta: 46.1MB). Free memory was 69.3MB in the beginning and 91.9MB in the end (delta: -22.6MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. [2022-07-12 06:20:09,478 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 109.1MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 06:20:09,478 INFO L158 Benchmark]: CACSL2BoogieTranslator took 515.64ms. Allocated memory is still 109.1MB. Free memory was 69.1MB in the beginning and 82.5MB in the end (delta: -13.4MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2022-07-12 06:20:09,479 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.09ms. Allocated memory is still 109.1MB. Free memory was 82.5MB in the beginning and 80.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 06:20:09,479 INFO L158 Benchmark]: Boogie Preprocessor took 50.43ms. Allocated memory is still 109.1MB. Free memory was 80.4MB in the beginning and 78.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 06:20:09,479 INFO L158 Benchmark]: RCFGBuilder took 497.05ms. Allocated memory is still 109.1MB. Free memory was 78.7MB in the beginning and 62.7MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-12 06:20:09,479 INFO L158 Benchmark]: TraceAbstraction took 3004.46ms. Allocated memory was 109.1MB in the beginning and 155.2MB in the end (delta: 46.1MB). Free memory was 62.3MB in the beginning and 98.2MB in the end (delta: -35.9MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2022-07-12 06:20:09,480 INFO L158 Benchmark]: Witness Printer took 70.70ms. Allocated memory is still 155.2MB. Free memory was 98.2MB in the beginning and 91.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-12 06:20:09,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 109.1MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 515.64ms. Allocated memory is still 109.1MB. Free memory was 69.1MB in the beginning and 82.5MB in the end (delta: -13.4MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.09ms. Allocated memory is still 109.1MB. Free memory was 82.5MB in the beginning and 80.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.43ms. Allocated memory is still 109.1MB. Free memory was 80.4MB in the beginning and 78.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 497.05ms. Allocated memory is still 109.1MB. Free memory was 78.7MB in the beginning and 62.7MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3004.46ms. Allocated memory was 109.1MB in the beginning and 155.2MB in the end (delta: 46.1MB). Free memory was 62.3MB in the beginning and 98.2MB in the end (delta: -35.9MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * Witness Printer took 70.70ms. Allocated memory is still 155.2MB. Free memory was 98.2MB in the beginning and 91.9MB in the end (delta: 6.3MB). 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: 550]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L79] int cleanupTimeShifts = 4; [L292] int pumpRunning = 0; [L293] int systemActive = 1; [L452] int waterLevel = 1; [L453] int methaneLevelCritical = 0; [L724] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L160] int retValue_acc ; [L161] int tmp ; [L165] FCALL select_helpers() [L166] FCALL select_features() [L167] CALL, EXPR valid_product() [L209] int retValue_acc ; [L212] retValue_acc = 1 [L213] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L167] RET, EXPR valid_product() [L167] tmp = valid_product() [L169] COND TRUE \read(tmp) [L171] FCALL setup() [L172] CALL runTest() [L151] CALL test() [L220] int splverifierCounter ; [L221] int tmp ; [L222] int tmp___0 ; [L223] int tmp___1 ; [L224] int tmp___2 ; [L227] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L229] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L231] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L237] tmp = __VERIFIER_nondet_int() [L239] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L241] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L470] COND TRUE waterLevel < 2 [L471] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L241] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L247] tmp___0 = __VERIFIER_nondet_int() [L249] 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] [L257] tmp___2 = __VERIFIER_nondet_int() [L259] COND TRUE \read(tmp___2) [L261] CALL startSystem() [L447] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L261] RET startSystem() [L274] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L299] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L306] COND TRUE \read(systemActive) [L308] CALL processEnvironment() [L328] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L331] COND TRUE ! pumpRunning [L333] CALL, EXPR isHighWaterLevel() [L425] int retValue_acc ; [L426] int tmp ; [L427] int tmp___0 ; [L431] CALL, EXPR isHighWaterSensorDry() [L532] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L535] COND FALSE !(waterLevel < 2) [L539] retValue_acc = 0 [L540] 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] [L431] RET, EXPR isHighWaterSensorDry() [L431] tmp = isHighWaterSensorDry() [L433] COND FALSE !(\read(tmp)) [L436] 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] [L438] retValue_acc = tmp___0 [L439] 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] [L333] RET, EXPR isHighWaterLevel() [L333] tmp = isHighWaterLevel() [L335] COND TRUE \read(tmp) [L337] CALL activatePump() [L356] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L337] RET activatePump() [L308] RET processEnvironment() [L314] CALL __utac_acc__Specification4_spec__1() [L54] int tmp ; [L55] int tmp___0 ; [L59] CALL, EXPR getWaterLevel() [L523] int retValue_acc ; [L526] retValue_acc = waterLevel [L527] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L59] RET, EXPR getWaterLevel() [L59] tmp = getWaterLevel() [L61] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L314] RET __utac_acc__Specification4_spec__1() [L274] 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] [L229] 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] [L231] 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] [L237] tmp = __VERIFIER_nondet_int() [L239] 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] [L247] tmp___0 = __VERIFIER_nondet_int() [L249] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L257] tmp___2 = __VERIFIER_nondet_int() [L259] COND TRUE \read(tmp___2) [L261] CALL startSystem() [L447] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L261] RET startSystem() [L274] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L299] COND TRUE \read(pumpRunning) [L301] CALL lowerWaterLevel() [L458] COND TRUE waterLevel > 0 [L459] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L301] RET lowerWaterLevel() [L306] COND TRUE \read(systemActive) [L308] CALL processEnvironment() [L328] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L331] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L346] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L308] RET processEnvironment() [L314] CALL __utac_acc__Specification4_spec__1() [L54] int tmp ; [L55] int tmp___0 ; [L59] CALL, EXPR getWaterLevel() [L523] int retValue_acc ; [L526] retValue_acc = waterLevel [L527] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L59] RET, EXPR getWaterLevel() [L59] tmp = getWaterLevel() [L61] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L314] RET __utac_acc__Specification4_spec__1() [L274] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L229] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L231] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L237] tmp = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L247] tmp___0 = __VERIFIER_nondet_int() [L249] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L257] tmp___2 = __VERIFIER_nondet_int() [L259] COND TRUE \read(tmp___2) [L261] CALL startSystem() [L447] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L261] RET startSystem() [L274] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L299] COND TRUE \read(pumpRunning) [L301] CALL lowerWaterLevel() [L458] COND TRUE waterLevel > 0 [L459] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L301] RET lowerWaterLevel() [L306] COND TRUE \read(systemActive) [L308] CALL processEnvironment() [L328] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L331] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L346] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L308] RET processEnvironment() [L314] CALL __utac_acc__Specification4_spec__1() [L54] int tmp ; [L55] int tmp___0 ; [L59] CALL, EXPR getWaterLevel() [L523] int retValue_acc ; [L526] retValue_acc = waterLevel [L527] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L59] RET, EXPR getWaterLevel() [L59] tmp = getWaterLevel() [L61] COND TRUE tmp == 0 [L63] CALL, EXPR isPumpRunning() [L380] int retValue_acc ; [L383] retValue_acc = pumpRunning [L384] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L63] RET, EXPR isPumpRunning() [L63] tmp___0 = isPumpRunning() [L65] COND TRUE \read(tmp___0) [L67] CALL __automaton_fail() [L550] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 659 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 648 mSDsluCounter, 1830 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1151 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 366 IncrementalHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 679 mSDtfsCounter, 366 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 201 GetRequests, 153 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=332occurred 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, 9 MinimizatonAttempts, 95 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 446 NumberOfCodeBlocks, 446 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 410 ConstructedInterpolants, 0 QuantifiedInterpolants, 802 SizeOfPredicates, 4 NumberOfNonLiveVariables, 385 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 38/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-12 06:20:09,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE